Making my 1KB ray tracer fast broke the byte budget 🙀

Five redundant ; before } saved 3 packed bytes: 1027 → 1024 B.

I tested 1024 ways to reorder the same math, like b[2]*s → s*b[2]. JSCrush saved 1 more byte.

1023 / 1024 B. Watch it render ↓

#JavaScript #sizecoding #codegolf #demoscene #rtx

My 1KB JavaScript ray tracer got a lot of feedback for being painfully slow 😅

One anonymous reviewer pointed at `with(Math)` as a likely culprit, so I benchmarked it.

Removing it made the same render 4.26× faster in Chrome and 6.96× faster in Firefox.

Cost: +1 packed byte.

#codegolf #JavaScript

Now that we accepted all 317 #js13k 2026 entries, it's time to VOTE and pick the best games this year! 🎉

js13kgames.com/2026/blog/vo...

Have fun! 🦄🌈

#gamedevjs #gamedev #gamejam #indiedev #indiegames #codegolf #JavaScript #HTML5

We've received more than 300 #js13k entries this year, which is a record since the very beginning in 2012!

js13kgames.com/2026/games

We're still helping fix some issues with submissions, and the voting will begin tomorrow, as planned!

#gamedevjs #gamedev #gamejam #indiedev #indiegames #codegolf

We have 200 #js13k entries accepted already, ~40 in the queue, ~60 drafts, and still (a bit less than) THREE HOURS to go before the deadline!

js13kgames.com/2026/submit

#gamedevjs #gamedev #gamejam #indiedev #indiegames #codegolf #deadline #submit #JavaScript #HTML5

Less than 24 HOURS left to submit your game into #js13k 2026, if you haven't done that already - we're now at 160 entries, and ~75 drafts!

js13kgames.com/submit

#gamedevjs #gamedev #gamejam #indiedev #indiegames #codegolf #deadline #submit

so here's what it takes to shave off ~60 bytes from a #pico8 cart. not a true #codegolf though, as carts for #pico1k jam use pxa compression and one has to counterintuitively repeat the code to make it similar. well, anyway i managed to put the outro into 4 bytes.

JavaScriptを1文字ずつ削る。手ごとの削減幅を実測した10個と、壊れる境界

#JavaScript #codegolf #Node.js #個人開発 #パフォーマンス