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WebR – R in the Browser

https://docs.r-wasm.org/webr/latest/
72•sieste•4d ago

Comments

stabbles•3h ago
Does it include a decent BLAS? If I remember correctly R ships with reference BLAS, but for decent performance you need something external. Wonder what they picked for wasm based R.
uniqueuid•3h ago
I wonder what kind of edge cases you deal with when blas is your bottleneck in R. Stan code aside, I’ve seen few problems that are neither instant (i.e. sub hours) nor impossible (I.e years of compute).
shakna•2h ago
Probably uses LLVM Flang to make the Fortran parts happen, compiling reference BLAS and LAPACK. As the main dev for WebR is also the one who did this [0].

[0] https://gws.phd/posts/fortran_wasm/

stared•2h ago
If you want to use it to create ggplot2 charts, here is an open source demo: https://github.com/QuesmaOrg/demo-webr-ggplot/

I created it as a side project from using WebR to execute code LLM-generated code (https://quesma.com/blog-detail/sandboxing-ai-generated-code-...). While we migrated away from it, I saw that WebR is cool, and I wanted to share it with you.

tovej•2h ago
Does this also support Rmd?

That would be pretty cool if you could publish an rstudio notebook and have a flow to edit a copy of the notebook straight in the web.

ekianjo•2h ago
it should via the Rmarkdown library.
thebelal•9m ago
There is a quarto-webr extension to do this. A bunch of real world examples are at https://quarto-webr.thecoatlessprofessor.com/qwebr-community...
Qem•1h ago
Can you install it as a progressive web app, to work offline as well?
nomilk•1h ago
What does this mean in practice? Does this mean you could start with a blank .html file, and use html, css, and javascript (like normal), but then somehow run R too? e.g. to generate a ggplot using the browser (as opposed to server, as a shiny app may)?

Has anyone got a minimal reproducible examples (e.g. tiny html file that runs, say 2 * 2 in R)? The example linked to in the article has the key line <script type="module" src="repl.mjs"></script>, but that mjs file goes over my head.

Curious/eager/excited to know/see what kinds of real-world applications this has.

ants_everywhere•35m ago
I really like R. I find it a nice language to work in. I'm glad to see projects like this that make it more accessible.
tlarkworthy•6m ago
Cool but 12MB WASM blob. I wish there was a way of making these WASM builds significantly smaller.

RFC 9839 and Bad Unicode

https://www.tbray.org/ongoing/When/202x/2025/08/14/RFC9839
82•Bogdanp•1h ago•15 comments

Manim: Animation engine for explanatory math videos

https://github.com/3b1b/manim
201•pykello•7h ago•41 comments

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https://lwn.net/Articles/1030818/
53•Bogdanp•3h ago•6 comments

Librebox: An open source, Roblox-compatible game engine

https://github.com/librebox-devs/librebox-demo
60•libreboxdevs•3h ago•14 comments

Writing Speed-of-Light Flash Attention for 5090 in CUDA C++

https://gau-nernst.github.io/fa-5090/
21•dsr12•2h ago•0 comments

I Made a Floppy Disk from Scratch

https://kottke.org/25/08/i-made-a-floppy-disk-from-scratch
76•bookofjoe•4h ago•26 comments

Developer's block

https://underlap.org/developers-block/
96•todsacerdoti•5h ago•53 comments

WebR – R in the Browser

https://docs.r-wasm.org/webr/latest/
72•sieste•4d ago•11 comments

You can't grow cool-climate plants in hot climates

https://www.crimepaysbutbotanydoesnt.com/blog/why-you-cant-grow-cool-climate-plants-in-hot-climates
75•surprisetalk•3d ago•19 comments

Lightning declines over shipping lanes following regulation of sulfur emissions

https://theconversation.com/the-world-regulated-sulfur-in-ship-fuels-and-the-lightning-stopped-249445
122•lentoutcry•4d ago•31 comments

World Wide Lightning Location Network

https://wwlln.net/
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https://shaderacademy.com/
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450× Faster Joins with Index Condition Pushdown

https://readyset.io/blog/optimizing-straddled-joins-in-readyset-from-hash-joins-to-index-condition-pushdown
6•marceloaltmann•3d ago•1 comments

Show HN: JavaScript-free (X)HTML Includes

https://github.com/Evidlo/xsl-website
181•Evidlo•20h ago•91 comments

David Klein's TWA Posters (2018)

https://flashbak.com/david-kleins-magnificent-twa-posters-404428/
46•NaOH•3d ago•4 comments

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https://utcc.utoronto.ca/~cks/space/blog/web/WebsitesDontCareAboutClients
35•zdw•9h ago•24 comments

The Fancy Rug Dilemma

https://epan.land/essays/2025-8_FancyRugDilemma
31•ericpan64•3d ago•14 comments

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https://git.vuxu.org/nitro/about/
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https://moq.dev/blog/first-cdn/
261•kixelated•20h ago•101 comments

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https://www.ssp.sh/blog/macbook-to-arch-linux-omarchy/
160•articsputnik•3d ago•295 comments

I run a full Linux desktop in Docker just because I can

https://www.howtogeek.com/i-run-a-full-linux-desktop-in-docker-just-because-i-can/
146•redbell•4d ago•91 comments

My tips for using LLM agents to create software

https://efitz-thoughts.blogspot.com/2025/08/my-experience-creating-software-with_22.html
131•efitz•13h ago•58 comments

The theory and practice of selling the Aga cooker (1935) [pdf]

https://comeadwithus.wordpress.com/wp-content/uploads/2012/08/the-theory-and-practice-of-selling-the-aga-cooker.pdf
54•phpnode•2d ago•27 comments

FFmpeg 8.0

https://ffmpeg.org/index.html#pr8.0
890•gyan•23h ago•184 comments

Top Secret: Automatically filter sensitive information

https://thoughtbot.com/blog/top-secret
108•thunderbong•1d ago•11 comments

ArduinoOS (2017)

https://github.com/DrBubble/ArduinoOS
42•dcminter•3d ago•5 comments

The ROI of Exercise

https://herman.bearblog.dev/exercise/
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Echidna Enters a New Era of Symbolic Execution

https://gustavo-grieco.github.io/blog/echidna-symexec/
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I'm too dumb for Zig's new IO interface

https://www.openmymind.net/Im-Too-Dumb-For-Zigs-New-IO-Interface/
171•begoon•8h ago•166 comments

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https://github.com/mbuhot/glyn
59•TheWiggles•16h ago•10 comments