Simon Willison
@simon.fedi.simonwillison.net.ap.brid.gy
Open source developer building tools to help journalists, archivists, librarians and others analyze, explore and publish their data. https://datasette.io […]
[bridged from https://fedi.simonwillison.net/@simon on the fediverse by https://fed.brid.gy/ ]
[bridged from https://fedi.simonwillison.net/@simon on the fediverse by https://fed.brid.gy/ ]
When I wrote about my JustHTML port from Python to JavaScript last month I chickened out and finished the post with some open questions - I've now made an attempt at providing my own answers to those questions here: https://simonwillison.net/2026/Jan/11/answers/
My answers to the questions I posed about porting open source code with LLMs
Last month I wrote about porting JustHTML from Python to JavaScript using Codex CLI and GPT-5.2 in a few hours while also buying a Christmas tree and watching Knives Out …
simonwillison.net
January 11, 2026 at 11:14 PM
When I wrote about my JustHTML port from Python to JavaScript last month I chickened out and finished the post with some open questions - I've now made an attempt at providing my own answers to those questions here: https://simonwillison.net/2026/Jan/11/answers/
@chrismessina.me that's next on my list to try out
January 10, 2026 at 12:41 AM
@chrismessina.me that's next on my list to try out
The episode is also available on YouTube, where it features one of the most appropriate uses of AI-generated imagery I've ever seen https://www.youtube.com/watch?v=lVDhQMiAbR8
January 8, 2026 at 7:56 PM
The episode is also available on YouTube, where it features one of the most appropriate uses of AI-generated imagery I've ever seen https://www.youtube.com/watch?v=lVDhQMiAbR8
@Edent I don't think that's entirely fair - they had a very poorly conceived take on the "code of conduct" which they (thankfully) renamed to "code of ethics" instead https://sqlite.org/codeofethics.html
Code Of Ethics
sqlite.org
December 30, 2025 at 12:58 AM
@Edent I don't think that's entirely fair - they had a very poorly conceived take on the "code of conduct" which they (thankfully) renamed to "code of ethics" instead https://sqlite.org/codeofethics.html
Here's a HUGE example of a transcript - a 15+ hour session I ran from my iPhone where I used Claude Code Web to port MicroQuickJS by Fabrice Bellard to Python. I should probably write more about that project! https://static.simonwillison.net/static/2025/claude-code-microjs/index.html
Claude Code transcript - Index
static.simonwillison.net
December 25, 2025 at 11:58 PM
Here's a HUGE example of a transcript - a 15+ hour session I ran from my iPhone where I used Claude Code Web to port MicroQuickJS by Fabrice Bellard to Python. I should probably write more about that project! https://static.simonwillison.net/static/2025/claude-code-microjs/index.html
If you have uvx you can try the tool out with zero-installation like this:
uvx claude-code-transcripts
Doing that will pull up a picker UI to select a recent local Claude Code session, then when you hit enter it'll show you the HTML version of that directly on your machine
uvx claude-code-transcripts
Doing that will pull up a picker UI to select a recent local Claude Code session, then when you hit enter it'll show you the HTML version of that directly on your machine
December 25, 2025 at 11:57 PM
If you have uvx you can try the tool out with zero-installation like this:
uvx claude-code-transcripts
Doing that will pull up a picker UI to select a recent local Claude Code session, then when you hit enter it'll show you the HTML version of that directly on your machine
uvx claude-code-transcripts
Doing that will pull up a picker UI to select a recent local Claude Code session, then when you hit enter it'll show you the HTML version of that directly on your machine
You can try the app out here - it's invaluable if you ever find yourself needing to cook Green Chef's Blackened Cauliflower and Turkish-style Spiced Chickpea Stew at the same time https://tools.simonwillison.net/blackened-cauliflower-and-turkish-style-stew
Dual Recipe Cooking Timer
tools.simonwillison.net
December 23, 2025 at 5:16 AM
You can try the app out here - it's invaluable if you ever find yourself needing to cook Green Chef's Blackened Cauliflower and Turkish-style Spiced Chickpea Stew at the same time https://tools.simonwillison.net/blackened-cauliflower-and-turkish-style-stew
... and now we're up to four implementations: Python (Emil Stenström), JavaScript (me), OCaml (Anil Madhavapeddy) and now Swift as well (Kyle Howells) https://simonwillison.net/2025/Dec/18/swift-justhtml/
swift-justhtml
First there was Emil Stenström's JustHTML in Python, then my justjshtml in JavaScript, then Anil Madhavapeddy's html5rw in OCaml, and now Kyle Howells has built a vibespiled dependency-free HTML5 parser …
simonwillison.net
December 19, 2025 at 12:00 AM
... and now we're up to four implementations: Python (Emil Stenström), JavaScript (me), OCaml (Anil Madhavapeddy) and now Swift as well (Kyle Howells) https://simonwillison.net/2025/Dec/18/swift-justhtml/
I guess we're calling this "vibespiling" now! https://simonwillison.net/2025/Dec/17/vibespiling/
AoAH Day 15: Porting a complete HTML5 parser and browser test suite
Anil Madhavapeddy is running an Advent of Agentic Humps this year, building a new useful OCaml library every day for most of December. Inspired by Emil Stenström's JustHTML and my …
simonwillison.net
December 17, 2025 at 11:26 PM
I guess we're calling this "vibespiling" now! https://simonwillison.net/2025/Dec/17/vibespiling/