After redesigning my website to use Atkinson Hyperlegible fonts, I switched my terminal and code editor to the monospace variant to properly test it. After a month of testing and positive experiences, I felt motivated to investigate further and write an article comparing Atkinson Hyperlegible Mono to JetBrains Mono and Fira Code.
The visual comparisons use examples from an accessibility paper on homoglyphs and mirror glyphs. I chose JetBrains Mono and Fira Code as a baseline, since many developers use these fonts and find them familiar.
While Atkinson Hyperlegible Mono excels at character distinction, nothing is perfect. I detail trade-offs in the "Caveats" section, below the installation instructions.
I'm curious to hear others' experiences and thoughts. I'm fascinated by what role font choice plays in legibility and accessibility, but the research is relatively sparse in this area.
alienbaby · 15h ago
I was hoping to see some comparisons of blocks of English text, and blocks of program code text, rather than just character by character. That would help me understand how it feels to read in arbitrary blocks, as well as appreciate specific design characteristics.
jasperry · 15h ago
I agree. This is a very enlightening discussion of individual glyph features that affect readability. But the thing that hit me immediately is the difference in how expanded or condensed these fonts feel. Even though in the examples, the text width of JetBrains and Fira is identical, JetBrains "looks" condensed to the point of being harder to read. But I feel like Atkinson goes too far the other direction and is too expanded. When I read it, I feel like I'm tripping over the empty space between the characters, or I have to move my eyes too much to read one word.
wentin · 15h ago
This might be of interest for you: https://www.codingfont.com/ I made it to select the perfect coding font. i will update it to include the Atkinson Hyperlegible Mono soon!
maybebyte · 15h ago
Hey, I'm a fan of your work. My font before this was Victor Mono, and I actually found it through your website. Do you publish the source code anywhere? I'd be interested to take a closer look at it.
wentin · 14h ago
The code was private but I see no reason not to open source it, so I just did! https://github.com/Typogram/coding-font-sveltekit This way you can add your own font to it, just modify codingfonts.ts and include the font files in the css!
illiac786 · 37m ago
You’re amazing man. We need more people like you out there.
wentin · 14h ago
If you feel like it, you can add this page https://www.codingfont.com/AtkinsonHyperlegibleMono to your article, it is the dedicated page for Atkinson Hyperlegible Mono with the options to compare it to other fonts on the side by side view.
ta8645 · 8h ago
Thanks, that is very helpful!
This particular font seems to have very inconsistent kerning. The "isMultipleOf" identifier pushes the s & M & u and e & O way too tightly together, and the remaining letters seem inconsistently spaced as well.
maybebyte · 14h ago
I just added it under "Other Resources", thank you for the pointer. :)
Ah, thanks for digging this out, this is the version 1, which I made using a no code tool. the current version is made using sveltekit, it is also just open sourced in the other comment.
jherdman · 14h ago
This was fun!
maybebyte · 15h ago
This is good feedback, thank you. When I wrote the article, I erred on the side of too few comparison images rather than too many. What would you recommend for comparison blocks? "The five boxing wizards jump quickly" and maybe a fizzbuzz?
For what it's worth, I generated the comparison images with Harfbuzz and ImageMagick, so in theory I could publish the script and then anyone could make their own comparison images. Fair warning: it's a quick and dirty shell script, written only to get the job done.
esafak · 15h ago
I would link to the downloads in the opening paragraph.
My impression is that while legible it is too fat. You'll notice that Fira Code and JetBrains Mono are similarly wide -- and narrower than Atkinson Hyperlegible Mono.
maybebyte · 15h ago
Sure, I'll add it in. I'll post the links here as well just in case:
I'd recommend getting it from there rather than the Braille Institute's website since they require an email and EULA, but here's the other download link anyway.
With Nerd Fonts, I'd recommend downloading both and setting up a fallback system through fontconfig though. Unfortunately, some versions (Nerd Fonts, official download) are still missing the backtick/grave glyph.
I'm pretty much there with you. I tend to use Fira Code for the improved visibility, but really would prefer Consolas/Inconsolata, but there are a few character variations that I don't like as much and it's slightly harder to read (for me). I also have come to rely on the Nerd Fonts enhancements with my terminal prompt (Starship).
tiffanyh · 13h ago
The difficulty I have with many so-called legible fonts is that they’re often not very readable.
Legibility refers to how easily individual characters can be identified. But good readability depends on how easily your brain can recognize whole words—through pattern recognition of word shapes.
When characters are too similar in shape and size, it becomes harder to distinguish the unique shape of each word, which reduces readability (which often happens with these highly legible fonts) — even if each individual letter is technically more clear.
ethan_smith · 11h ago
This legibility vs readability distinction is why variable-width programming fonts like Proportional or Input Sans can actually reduce cognitive load during extended coding sessions despite sacrificing character grid alignment.
maybebyte · 12h ago
Interesting distinction there. I didn't know that was the difference between legibility and readability. I'd really like to hear more about this. Do you have experience with fonts that strike a better balance, or know of reading material that discusses this subject in more detail?
tiffanyh · 12h ago
This is a complex topic.
For example, if you grew up in an English-speaking country, your computer likely defaulted to Arial or Helvetica as its sans-serif font. Over time, your brain became familiar with how words looked in those typefaces—their proportions and shapes.
Because fonts like Inter and SF share similar proportions, your brain finds them easier to process, which makes them feel more readable.
saltcured · 7h ago
I spent so many years reading the 6x13 "fixed" font in XTerm, starting with CRTs and moving over to LCDs.
I don't think anything is more readable to me. It hit the sweet spot of being condensed enough for easy reading but still with highly legible individual characters too.
I have always wished someone could have made a scalable version to bring it into the future of high resolution displays.
Do you think Atkinson Hyperlegible specifically hurts readability?
I am thinking about the regular one on text, not mono on code.
oskarw85 · 1h ago
Not OP but I set Atkinson Hyperlegible on my e-ink reader and it served me well. I feel my reading speed has improved. It is pretty wide though so to put more text on the page I decreased font height a bit.
atoav · 12h ago
Good observation, legibilty is not the same as readability. Hyperlegible fonts are used in places where it is crucial that the readers can identify the correct characters and/or short words – even if the readability suffers slightly.
Readable fonts are for longer form texts where the flow of reading is more important than correctly identfying individual characters.
Both have valid use cases and there are fonts who mange to do both pretty well.
evertheylen · 15h ago
Why don't we embrace proportional (i.e. not monospace) fonts more for coding? IMHO, they are a big step up when it comes to legibility. I personally switched after I noticed reading stuff in the sidebar (which is usually in a proportional font) felt more comfortable than reading code.
You can't use it for a terminal of course, and occasionally I find comments relying on monospace alignment. Other than that I see no downside to proportional fonts.
I use Input, which gives more room to special characters and is pretty nice overall: https://input.djr.com/
fainpul · 15h ago
I fully agree that proportional fonts are nicer to read, even for code. When I tried to use it, I got annoyed by Go, which autoformats code with spaces to align stuff and that looks very ugly with a proportional font. The solution would be elastic tabstops [1], but that seems just to be a concept without actual support in any editor.
If you use a true proportional font, you give up aligning code elements other than basic indentation. For most people, that's too much to give up.
I do like quasi-proportional fonts like Iosevka Aile, where very wide or very narrow characters are allowed something more like their natural widths. I think, though I'm not sure, that the widths are worked out so that "Wl" (wide + narrow) is the same length as "xx" (2 x normal), for example. My experience using Iosevka Aile in Emacs is that things usually-but-not-always align like they're supposed to, which is a better trade-off than fully proportional fonts.
bjourne · 5h ago
Typos feel way harder to spot in proportional fonts. Maybe because proportional fonts are easier to read so your brain subconsciously ignores them. And typos, like a misplaced or forgotten comma, can cause some of the most annoying bugs. Also, most editors still mostly operate on individual characters. With a fixed width font I can immediately see how many cursor up and cursor left commands I need to send to move the cursor to a specific position in the text.
CalChris · 12h ago
> You can't use it for a terminal of course
That is the problem, though. I edit with neovim inside of wezterm. The few times I've seen proportional used for code, I've thought that it looked interesting but realistically, I live in a vt100 universe and all things considered, it's really not that bad.
I'm interested in Atkinson Hyperlegible Mono as a programming font. I think monospaced is a defining characteristic of programming fonts. Basically, legibility is just different for programming and text (although I clearly read too much Verdana).
maybebyte · 15h ago
You know, I've heard this idea about proportional fonts before and have been intrigued by the idea. I use Neovim running inside Alacritty as my code editor, though, so unsure if it'll work for me or not.
Going to check that font out - thank you for the suggestion. :)
bityard · 12h ago
Some people use proportional fonts in their IDEs, and have been for decades. It's just not exactly a mainstream practice. (I seem to recall that Microsoft used proportional fonts in their IDEs in the 90's. Or maybe I'm thinking of Visual Basic? Not sure.)
The main reason I have felt no inclination to use proportional fonts when coding is that proportional fonts tend to be _very_ bad at distinguishing homoglyphs and that is the _last_ thing you want when trying to find the syntax error or undefined variable. Although I will admit that I haven't look very hard for a proportional font that's actually meant for programming.
The other reason is that sometimes I read code where someone has created an ASCII diagram in the comments, or have other structures or whitespace where vertical alignment matters. (This used to be highly popular in C, although it's viewed as a bad practice in "modern" times.)
I find monospace code very easy to read, so I guess at the end of the day, proportional fonts have a few disadvantages with no real upside. For me at least.
sureglymop · 10h ago
Maybe this is a silly idea, but what about a terminal emulator that could switch fonts on the fly?
For example, it could switch to a monospace font when a "fullscreen" program like vim switches to the other buffer.
Or maybe it could even render different fonts per line.
namibj · 10h ago
You sound like you want Emacs. The X11 frontend.
hollerith · 15h ago
Which IDE or editor are you viewing this proportional font in?
A proportional font in Emacs doesn't look right to my eye. My guess is that there are subtleties in the spacing between letters when a browser or a book publisher renders the text that Emacs does not know about.
accelbred · 15h ago
Emacs should also be doing kerning. I use proportional fonts for non-prog-mode buffers and no issue here.
Isn't it the opposite; use proportional fonts in the terminal but not code, where alignment matters? I am giving it a try, and I like it on first impression.
Jaxan · 14h ago
Alignment in the terminal matters. Even something like ls uses columns.
babypuncher · 14h ago
Tons and tons of terminal apps are written assuming a monospace font. Alignment matters and you don't have much control over that.
In code, you can always choose a style that discourages spatial alignment.
fainpul · 15h ago
Terminals usually don't support proportional fonts.
eviks · 13h ago
Because unfortunately the tools are too primitive and don't support it
antiframe · 12h ago
Emacs has been around for decades and supports proportional typefaces everywhere I tried to use them. Are modern tools more primitive than that?
giraffe_lady · 13h ago
Well, the alignment is a pretty significant downside.
There are now some excellent mono faces that have broken from a lot of the traditional monospace design elements and that look and feel very much like proportional fonts. Quadraat sans mono, cartograph cf, triplicate, I've seen a good homebrew alegreya sans mono variant too. I don't know of any free ones, though inconsolata-g is well in that direction. But I expect more of this trend over the next few years.
It's not free, but I love it. You can customize some variations too (like how zeroes look; I use the "invisible slash" look) and it has some support for terminal symbols and programming ligatures used by terminal tweaks like Powerline, etc.
nitinreddy88 · 3h ago
Same here. No other font comes close to it in terms of readability.
I really don't care about what each font claims about in terms of achiveness. As long as it's not pleasing to me, its not worth for me.
bayindirh · 13h ago
Yeah, where there's Berkeley Mono, there are no alternatives. I love that font, and use it everywhere.
Void_ · 14h ago
I love this font! It's very well worth the price.
braum · 11h ago
yep! I just got it the other day. I upgraded to get the variants but I quickly settled on the Regular which is included with $75 Dev license. It's amazing even using it for non-code like in Obsidian.
Brajeshwar · 14h ago
I moved to "Atkinson Hyperlegible" for all of my Note-taking/Reading, Markdown Editing, etc. And recently upgraded to "Atkinson Hyperlegible Next" beating my choices of iA Writer’s Fonts. We are spoiled for choice and they are all beautiful and super readable and comfortable.
Unfortunately, I found "Atkinson Hyperlegible Mono" (IDE/Terminal) to be a tad stunted for my liking. I wear glasses but not that bad and I like to use my computer without glasses. I personally like "Monaco" with a tad larger font-size. The other reason I try to stick to more common fonts and pick one of the better of them is to be able to use any IDE (helping/discussing with team members) and not feeling uncomfortable without "my favorite font."
Again, very personal, but I tried "Atkinson Hyperlegible" for the website for about a month or so and I found it to be neither modern, nor professional nor vintage/classic but more like the website warming up to the reader/visiter, “Hey, are you OK? Finding it hard to read, I'm going to make some scientific fixes to help you read!”
It's ideal for 'wordy' languages such as C++ where a typical line length can often go over 150 characters, and then you don't have to scroll sideways.
ThisNameIsTaken · 15h ago
Adding to the list of 'this is what I am using', I have switched both terminal and code editor to Maple Mono[1]. Which, looking at TFA, seems to be somewhat similar in spirit as Atkinson Hyperlegible, although I haven't used that.
Maple has many ligatures, I personally like the hypervisible [TODO]. Overall I find it very legible, even on small sizes, and pleasing also for writing e.g. in Markdown.
I don’t like glyphs, but that normie mode looks excellent. I don’t know how I missed maple when doing my font search recently. Thanks for the link.
specialist · 14h ago
Those are some sexy glyphs (gaps in curly punctuation).
The ligatures for keywords is clever. I appreciate those niceties. Like rendering small gaps in large numbers, eg '1000000' looks like '1 000 000'.
IIRC Berkeley or Monospaced have a few neat tricks like that.
bitwize · 9h ago
Iosevka is the most terminaly of the modern vector programming fonts, outside of perhaps Terminus. I set my Emacs to use it, as I haven't been able to find a font that comes anywhere near as comfortable.
Over my embarrassingly long time of coding, I've gone through all of these fonts and more (VT100 anyone?) and eventually traded the sans-serif fixed-width fonts for ones with serifs, as it feels less tiring at the end of long days. For the last few years, I've used Monaspace [1] variants, especially Xenon, and enjoyed them immensely.
Good. That's a feature, not a bug. I want -> to render as a dash and a greater than sign. Not an arrow. I can't even articulate why, other than a deep seated distrust of magic.
eviks · 13h ago
Nothing stops you from simply not enabling that font feature, user config is also not a bug
elric · 11h ago
Configurable fonts are a thing? Never configured a font beyond size/weight/colour. Intetesting.
crazygringo · 10h ago
How?
Which editors on which OS's provide a toggle for that?
hadrien01 · 8h ago
Jetbrains IDEs: Settings > Editor > Font > Enable ligatures
Sublime Text: Set "font_options" to "dlig". There are other settings to choose which character tables are allowed to use ligatures or not.
Visual Studio Code: Set "editor.fontLigatures" to "true". You can also put CSS font features to choose which ligatures you want to enable.
crazygringo · 8h ago
Thank you so much, I had no idea! Very helpful.
dismalaf · 9h ago
Dunno about toggle in an editor but fancy terminals have config flags for stuff like that (Kitty, Wezterm, Ghostty, etc...).
And then you run Vim or Emacs in said terminal...
CalChris · 13h ago
wezterm gives you the option to ligature or not to ligature.
This is why I like 0xProto font. It has ligatures for a nice clean look, but preserves a little bit of spacing between characters so they're still legible as individual characters. It's also very readable and legible overall, with nice proportions.
And ligatures are a must for me because I find that symbols don't line up nicely in a ton of fonts and it annoys me a lot.
jkmcf · 14h ago
Fira Code uses the empty set character (∅) for zero. This mistake cost me a correct answer on a math test in 12th grade because I made the wrong slash.
Either that, or I made the correct slash and my teacher interpreted it incorrectly!
tripflag · 14h ago
it's also inconvenient for Norwegians and Danes, since Ø is part of our alphabet. Slightly jealous of Sweden since they write it like Ö instead... Either way, big fan of dotted zeros for that reason.
eviks · 13h ago
Yeah, dot in the middle is the best option, also better aligns with the whole circular concept of the glyph as opposed to the straight slash line
Looks like a great, functional font. I'm also a fan of Adobe Source Code Mono, but the look and feel of Berkeley Mono just wiped the floor of all these professional and well designed fonts.
IBM's Plex Mono also a great contender for a "professional" programming font.
ruuda · 14h ago
I switched to it after more than 12 years with Consolas, expecting to quickly get bored of it, like every other time I had a brief affair with a different font. But One Mono stuck!
sevg · 14h ago
I’ve been loving MonoLisa. I previously used Fira Mono and then JetBrains Mono, each for a few years. All good fonts!
I had a nice little chuckle when reading the intro paragraph:
> As software developers, we always strive for better tools but rarely consider a font as such.
We must travel in different circles, it feels to me like half the developers on HN, blogs, and social media are WAY more concerned with the aesthetic of their development environment than actually getting any real work done with it!
esafak · 13h ago
You can't beat that name!
alexeiz · 13h ago
Coming from Commit Mono, Atkinson looks a bit unusual. But I think I can get used to it. I think the comparison to Fira Code is valid, because in the terminal Atkinson looks almost like Fira Mono, but better. Since I usually sit a meter away from the screen, I can appreciate the extra legibility of this font.
Also, it's great that it's available as a Nerd variant. It makes it super easy to install on Linux with Embellish.
gantengx · 3h ago
For the monospace font I still revert back to DejaVu Sans Mono/Menlo. Somehow other fonts just doesn't click and feels a bit off
eigenvalue · 13h ago
My favorite of these programmer fonts is PragmataPro, which I bought around 5 years ago. I like how it’s denser while still being easy to read.
Only problem is that it doesn’t have all the nerd font glyphs so it can’t handle the nice oh-my-zsh themes well, like the powerline-10k theme. I still use it despite that though.
lycopodiopsida · 12h ago
Same here, PragmataPro stopped me from switching fonts. Maybe because it was so expensive ;)
It just has a lot of attention to detail and polish.
I was using IBM Plex Mono and Iosevka before.
Arubis · 11h ago
Hard agree; I paid for the full desktop license and stopped thinking about my programming font choices.
bityard · 12h ago
For those who just want to have one nice reliable monospace font and move onto other concerns in life, there is Hack: https://sourcefoundry.org/hack/
zettabomb · 12h ago
Somehow this just seems like throwing a fourth choice into the mix, rather than simplifying anything.
vouaobrasil · 12h ago
What I have found with these fonts (and I have tried them all) is that one isn't really much better than an another, but instead I have to switch between them (and others) because eventually I get sick of every single one of them.
bayindirh · 12h ago
> because eventually I get sick of every single one of them.
Can I ask why?
vouaobrasil · 12h ago
I don't know. I like all the fonts, they're good. But looking at them for long periods of time makes me tired of looking at them and I just need to switch. You might as well ask me why I get tired of a certain food if I eat it too often.
bayindirh · 11h ago
Oh, OK. I asked, because sometimes people doesn't like a certain aspect of a font and can't stand it, and need to switch. Also, I'm also the exact opposite of you. I can use a font I like for a decade without getting tired of it. Same for a good color scheme for my terminals / IDE.
So it was a genuine curiosity of me. Sorry if it sounded rude or accusatory or similar.
vouaobrasil · 11h ago
Oh no, I didn't consider it rude at all! It's quite interesting to find someone who can use the same one over and over....brains are weird eh?
AndriyKunitsyn · 14h ago
"Mirror image glyphs occur when flipping one character creates another"
About a half of the article is about these "mirror image glyphs". Why would they be a problem for the proclaimed purpose of character distinction? Has anyone ever mixed up "b" and "q"?
maybebyte · 14h ago
This is a fair question/critique. As I understand it, this is a particular consideration for coders and readers with dyslexia, as they flip the letters. The thought process is that by making the characters distinct, it reduces this problem.
I learned about mirror glyphs through a document linked in the Accessible Perceptual Contrast Algorithm (APCA) website. For context, APCA is the system that aims to supplant current color calculation methods in the Web Content Accessibility Guidelines (WCAG).
Only when reading books to my children and we sit on the ground and the book is upside down for me :-). When programming, not once.
The real reason it’s important is that for some the glyphs are too much alike and can be confused. The brain may rotate of flips things sometimes.
mcswell · 13h ago
Sans serifs...except when the serifs help distinguish 1 from l and from I, etc.
Why not use a monospaced serif font in the first place? I get that they don't seem to be common, but maybe they should be.
WCSTombs · 11h ago
I think it's because traditionally computer screens have pretty low DPI, and serifs can be really tricky to render well at low DPI. In print, that's not an issue, and serif fonts really shine.
On high-DPI screens, like the one I'm currently using, serif monospace fonts can also look really good. For example, I'm typing in Latin Modern Mono (based on TeX's default typewriter font) in this text box.
kqr · 13h ago
I agree. I'm a big fan of Luxi Mono, but I avoid it when publishing stuff because others seem to dislike serifs.
WCSTombs · 11h ago
Luxi Mono is great. Do you have an opinion on Go Mono [1]? It's by the same creators as the Luxi fonts (Bigelow & Holmes) and very similar to Luxi Mono but fixes some legibility issues. Moreover, it's freely licensed.
Since we're sharing our monospace fonts of choice, I use mononoki. My vision isn't great, and this is the font I've found that allows me to pack the most on my screen while still remaining readable.
That said, the differences between 0 and 8, while better than my previous favorites, still aren't as stark as I'd like them to be.
wentin · 14h ago
This font was just added to codingfont a few minutes ago! https://www.codingfont.com/AtkinsonHyperlegibleMono you can compare it side by side to your other favorite coding font to see which one is better looking in a code editor!
You may also play the blindfold game to see if it will TRULY wins against all others in a blind test on codingfont.com
Thing is Atkinson Hyperlegible is "what if we made a non-monospace font with monospace like, distinct characters?" so the Mono version doesn't have much of a point. For text or code, it looks worse to me than the alternatives.
earksiinni · 8h ago
You can pry PragmataPro from my cold dead hands.
asadotzler · 11h ago
Fira fonts, another Mozilla contribution to the world. We had these designed for Firefox OS (in concert with Telefónica.) Nice to see some of that effort endures, even if only in type.
genshii · 14h ago
I use Atkinson Hyperlegible for my blog[1]. Really happy to see the new version adds variable weight. That was the main thing I didn't like about the original version.
any iosevka lovers out there? keep coming back to it even after trying Atkinson, Berkeley Mono, Jetbrains Mono...
khaledh · 15h ago
This is of course subjective, but I still find JetBrains Mono to be much more pleasant to read (when it comes to code) than any other mono font out there.
RyanHamilton · 14h ago
I also found this and actually made it the default for an application I author with a few thousand users. Well it turned out jetbrains mono didn't support chinese characters so I broke my app for a proportion of my user base. I had to revert it. Also it can add seconds to load time. Just a warning as I think a few people on hn will make tools for others. I still set it as my own font.
microflash · 9h ago
You can always subset different fonts for different languages. This does two things: reduces the file size and allows some agents, such as your browser, load specific font depending on unicode range.
Yes, same for me. I tried many fonts over the years and I settled on Comic Code and JetBrains Mono. I use one for code editors and the other for CLIs.
tommica · 14h ago
I use comic code in my editors and in cli - it's just fun and very readable
bronlund · 12h ago
To me it seems that Atkinson Hyperlegible Mono has really bad kerning. I think I'll stick to JetBrains Mono for the time being.
spiralcoaster · 15h ago
Alternative title: A long winded technical deep dive into how I make my personal font preference appear to be an objective decision.
reidrac · 14h ago
Also, how is not having support for font ligatures a feature? Can't you just not use them if they are available?
May be worded differently, like: it doesn't support ligatures, but it doesn't affect me because I don't use them.
c-hendricks · 8h ago
Heads up all the images are squished on mobile.
maybebyte · 7h ago
Thanks for the heads up. I have a couple of questions:
- What do you mean by squished?
- What device and browser are you using?
- Are all images affected or just certain ones?
A screenshot would help a lot if possible.
dcre · 6h ago
In Safari only (noticed on iOS but reproducible in desktop Safari with responsive design mode) the images appear to be keeping their height constant when they scale down their width. Changing "height: fit-content" to "height: auto" seems to fix it.
Ah, that does indeed appear squished! I'm glad someone said something. Thank you for following up with the additional information. It should be fixed now.
forrestthewoods · 15h ago
Website is down so I can’t tell what it’s actually about.
But in any case, the correct font for coding is Cascadia Code. I don’t know why more Linux people don’t use it. Just because it’s from Microsoft?
The website is still up, it just loads slowly due to the increased viewership. Never had this much traffic before.
Iwan-Zotow · 4h ago
Second there
arh68 · 11h ago
Well, now I'm confused.
> Fira Code uses uniform length for +, =, and -. - and _ share similar length. The /\ characters join together and render smaller compared to the other fonts.
This "joining" is a ligatures thing, I'm almost certain, at least for `<>`. I can't for the life of me get anything on macOS to render `/\` as joined, though. Stumped. I've no preference either way, it's just weird to see a familiar font rendered so strangely. Maybe it's a Windows font rendering thing ?
A very fair comparison, though I'd argue legibility isn't always worthwhile; the MICR (?) fonts on checks are quite legible (perhaps machine-legible) but too weird to use.
also, TIL IntelliJ bundles Fira Code for quite some time now
maybebyte · 10h ago
Interesting to see the font rendering differences crop up, I haven't tested on anything except Linux. For context, I wrote a hacky shell script that uses Harfbuzz and ImageMagick to generate the comparison images in a Fedora 41 virtual machine. It's possible that something in that software stack causes the characters to render differently.
paradox460 · 11h ago
Would love to see iosevka join this comparison
fxtentacle · 12h ago
It seems I'm the only person who likes fonts that deliberately exaggerate their edges to better align with a pixel grid. All of these font comparisons always compare pretty smooth and round fonts to each other. Apart from minor details, the comparisons look the same. But I actually like this design most: https://hajo.me/images/HajoCode16px_hr.png On a 9x16 pixel grid, that'll have really sharp contrasts, just like good old Windows 98 before subpixel antialiasing.
pmarreck · 15h ago
It just occurred to me that if HN supported, say, 4-bit mono PNG images with transparency in comments, that would help here without impacting bandwidth too much and might add a classy element
The visual comparisons use examples from an accessibility paper on homoglyphs and mirror glyphs. I chose JetBrains Mono and Fira Code as a baseline, since many developers use these fonts and find them familiar.
While Atkinson Hyperlegible Mono excels at character distinction, nothing is perfect. I detail trade-offs in the "Caveats" section, below the installation instructions.
I'm curious to hear others' experiences and thoughts. I'm fascinated by what role font choice plays in legibility and accessibility, but the research is relatively sparse in this area.
This particular font seems to have very inconsistent kerning. The "isMultipleOf" identifier pushes the s & M & u and e & O way too tightly together, and the remaining letters seem inconsistently spaced as well.
For what it's worth, I generated the comparison images with Harfbuzz and ImageMagick, so in theory I could publish the script and then anyone could make their own comparison images. Fair warning: it's a quick and dirty shell script, written only to get the job done.
My impression is that while legible it is too fat. You'll notice that Fira Code and JetBrains Mono are similarly wide -- and narrower than Atkinson Hyperlegible Mono.
https://github.com/googlefonts/atkinson-hyperlegible-next-mo...
I'd recommend getting it from there rather than the Braille Institute's website since they require an email and EULA, but here's the other download link anyway.
https://www.brailleinstitute.org/freefont/
Also, Nerd Fonts added Atkinson Hyperlegible Mono in their v3.4.0 release.
https://github.com/ryanoasis/nerd-fonts/releases/tag/v3.4.0
With Nerd Fonts, I'd recommend downloading both and setting up a fallback system through fontconfig though. Unfortunately, some versions (Nerd Fonts, official download) are still missing the backtick/grave glyph.
https://github.com/googlefonts/atkinson-hyperlegible-next-mo...
Legibility refers to how easily individual characters can be identified. But good readability depends on how easily your brain can recognize whole words—through pattern recognition of word shapes.
When characters are too similar in shape and size, it becomes harder to distinguish the unique shape of each word, which reduces readability (which often happens with these highly legible fonts) — even if each individual letter is technically more clear.
For example, if you grew up in an English-speaking country, your computer likely defaulted to Arial or Helvetica as its sans-serif font. Over time, your brain became familiar with how words looked in those typefaces—their proportions and shapes.
Because fonts like Inter and SF share similar proportions, your brain finds them easier to process, which makes them feel more readable.
I don't think anything is more readable to me. It hit the sweet spot of being condensed enough for easy reading but still with highly legible individual characters too.
I have always wished someone could have made a scalable version to bring it into the future of high resolution displays.
https://terminus-font.sourceforge.net/
https://files.ax86.net/terminus-ttf/
I am thinking about the regular one on text, not mono on code.
Readable fonts are for longer form texts where the flow of reading is more important than correctly identfying individual characters.
Both have valid use cases and there are fonts who mange to do both pretty well.
You can't use it for a terminal of course, and occasionally I find comments relying on monospace alignment. Other than that I see no downside to proportional fonts.
I use Input, which gives more room to special characters and is pretty nice overall: https://input.djr.com/
[1] https://nick-gravgaard.com/elastic-tabstops/
I do like quasi-proportional fonts like Iosevka Aile, where very wide or very narrow characters are allowed something more like their natural widths. I think, though I'm not sure, that the widths are worked out so that "Wl" (wide + narrow) is the same length as "xx" (2 x normal), for example. My experience using Iosevka Aile in Emacs is that things usually-but-not-always align like they're supposed to, which is a better trade-off than fully proportional fonts.
That is the problem, though. I edit with neovim inside of wezterm. The few times I've seen proportional used for code, I've thought that it looked interesting but realistically, I live in a vt100 universe and all things considered, it's really not that bad.
I'm interested in Atkinson Hyperlegible Mono as a programming font. I think monospaced is a defining characteristic of programming fonts. Basically, legibility is just different for programming and text (although I clearly read too much Verdana).
Going to check that font out - thank you for the suggestion. :)
The main reason I have felt no inclination to use proportional fonts when coding is that proportional fonts tend to be _very_ bad at distinguishing homoglyphs and that is the _last_ thing you want when trying to find the syntax error or undefined variable. Although I will admit that I haven't look very hard for a proportional font that's actually meant for programming.
The other reason is that sometimes I read code where someone has created an ASCII diagram in the comments, or have other structures or whitespace where vertical alignment matters. (This used to be highly popular in C, although it's viewed as a bad practice in "modern" times.)
I find monospace code very easy to read, so I guess at the end of the day, proportional fonts have a few disadvantages with no real upside. For me at least.
For example, it could switch to a monospace font when a "fullscreen" program like vim switches to the other buffer.
Or maybe it could even render different fonts per line.
A proportional font in Emacs doesn't look right to my eye. My guess is that there are subtleties in the spacing between letters when a browser or a book publisher renders the text that Emacs does not know about.
In code, you can always choose a style that discourages spatial alignment.
There are now some excellent mono faces that have broken from a lot of the traditional monospace design elements and that look and feel very much like proportional fonts. Quadraat sans mono, cartograph cf, triplicate, I've seen a good homebrew alegreya sans mono variant too. I don't know of any free ones, though inconsolata-g is well in that direction. But I expect more of this trend over the next few years.
It's not free, but I love it. You can customize some variations too (like how zeroes look; I use the "invisible slash" look) and it has some support for terminal symbols and programming ligatures used by terminal tweaks like Powerline, etc.
Unfortunately, I found "Atkinson Hyperlegible Mono" (IDE/Terminal) to be a tad stunted for my liking. I wear glasses but not that bad and I like to use my computer without glasses. I personally like "Monaco" with a tad larger font-size. The other reason I try to stick to more common fonts and pick one of the better of them is to be able to use any IDE (helping/discussing with team members) and not feeling uncomfortable without "my favorite font."
Again, very personal, but I tried "Atkinson Hyperlegible" for the website for about a month or so and I found it to be neither modern, nor professional nor vintage/classic but more like the website warming up to the reader/visiter, “Hey, are you OK? Finding it hard to read, I'm going to make some scientific fixes to help you read!”
It's ideal for 'wordy' languages such as C++ where a typical line length can often go over 150 characters, and then you don't have to scroll sideways.
Maple has many ligatures, I personally like the hypervisible [TODO]. Overall I find it very legible, even on small sizes, and pleasing also for writing e.g. in Markdown.
[1] https://font.subf.dev/en/ / https://github.com/subframe7536/maple-font
The ligatures for keywords is clever. I appreciate those niceties. Like rendering small gaps in large numbers, eg '1000000' looks like '1 000 000'.
IIRC Berkeley or Monospaced have a few neat tricks like that.
Here's an interesting take on the two: https://neil.computer/notes/berkeley-mono-december-update/
See if you can figure why I linked this one.
---
More about Andalé: https://en.wikipedia.org/wiki/Andalé_Mono
This conversation may still be going on 20 years from now: https://nedbatchelder.com/blog/200602/monospace_fonts_compar...
Nice we have more choice since this capture in 2006: https://www.donationcoder.com/forum/?topic=2499.0
1. https://monaspace.githubnext.com/
Good. That's a feature, not a bug. I want -> to render as a dash and a greater than sign. Not an arrow. I can't even articulate why, other than a deep seated distrust of magic.
Which editors on which OS's provide a toggle for that?
Sublime Text: Set "font_options" to "dlig". There are other settings to choose which character tables are allowed to use ligatures or not.
Visual Studio Code: Set "editor.fontLigatures" to "true". You can also put CSS font features to choose which ligatures you want to enable.
And then you run Vim or Emacs in said terminal...
And ligatures are a must for me because I find that symbols don't line up nicely in a ton of fonts and it annoys me a lot.
Either that, or I made the correct slash and my teacher interpreted it incorrectly!
designed for low-vision developers.
IBM's Plex Mono also a great contender for a "professional" programming font.
https://www.monolisa.dev/
> As software developers, we always strive for better tools but rarely consider a font as such.
We must travel in different circles, it feels to me like half the developers on HN, blogs, and social media are WAY more concerned with the aesthetic of their development environment than actually getting any real work done with it!
Also, it's great that it's available as a Nerd variant. It makes it super easy to install on Linux with Embellish.
Only problem is that it doesn’t have all the nerd font glyphs so it can’t handle the nice oh-my-zsh themes well, like the powerline-10k theme. I still use it despite that though.
Can I ask why?
So it was a genuine curiosity of me. Sorry if it sounded rude or accusatory or similar.
About a half of the article is about these "mirror image glyphs". Why would they be a problem for the proclaimed purpose of character distinction? Has anyone ever mixed up "b" and "q"?
I learned about mirror glyphs through a document linked in the Accessible Perceptual Contrast Algorithm (APCA) website. For context, APCA is the system that aims to supplant current color calculation methods in the Web Content Accessibility Guidelines (WCAG).
https://apcacontrast.com/
https://www.researchgate.net/publication/338149302_Evaluatin...
The real reason it’s important is that for some the glyphs are too much alike and can be confused. The brain may rotate of flips things sometimes.
Why not use a monospaced serif font in the first place? I get that they don't seem to be common, but maybe they should be.
On high-DPI screens, like the one I'm currently using, serif monospace fonts can also look really good. For example, I'm typing in Latin Modern Mono (based on TeX's default typewriter font) in this text box.
[1] https://go.dev/blog/go-fonts
https://github.com/madmalik/mononoki
That said, the differences between 0 and 8, while better than my previous favorites, still aren't as stark as I'd like them to be.
[1] https://adamhl.dev
Available on Homebrew: https://formulae.brew.sh/cask/font-atkinson-hyperlegible#def...
I wrote a post about subsetting, in context of my personal site, here: https://www.naiyerasif.com/post/2024/06/27/how-i-subset-font...
May be worded differently, like: it doesn't support ligatures, but it doesn't affect me because I don't use them.
- What do you mean by squished?
- What device and browser are you using?
- Are all images affected or just certain ones?
A screenshot would help a lot if possible.
https://imgur.com/a/TENOrZh
But in any case, the correct font for coding is Cascadia Code. I don’t know why more Linux people don’t use it. Just because it’s from Microsoft?
https://github.com/microsoft/cascadia-code
> Fira Code uses uniform length for +, =, and -. - and _ share similar length. The /\ characters join together and render smaller compared to the other fonts.
This "joining" is a ligatures thing, I'm almost certain, at least for `<>`. I can't for the life of me get anything on macOS to render `/\` as joined, though. Stumped. I've no preference either way, it's just weird to see a familiar font rendered so strangely. Maybe it's a Windows font rendering thing ?
A very fair comparison, though I'd argue legibility isn't always worthwhile; the MICR (?) fonts on checks are quite legible (perhaps machine-legible) but too weird to use.
also, TIL IntelliJ bundles Fira Code for quite some time now