Download a released binary

only on this fork

This page documents txiki.js with slim builds — a fork that adds size-reduced build profiles and publishes prebuilt binaries. It is not part of upstream txiki.js: see txikijs.org and saghul/txiki.js for the original project and its documentation.

Each slim release ships eight profiles on four platforms, from Releases, under tags such as slim-v26.6.0-8.

Pick a profile first

Start with min and add only the capabilities your program needs.

profile	FFI	TLS	SQLite	Best fit
min	—	—	—	scripting and embedding
ffi	✅	—	—	tjs:ffi
tls	—	✅	—	HTTPS, WSS and TLS sockets
sqlite	—	—	✅	tjs:sqlite and persistent localStorage
ffi-tls	✅	✅	—	networked native-library use
ffi-tls-sqlite	✅	✅	✅	all published optional features
tuned-min	—	—	—	min, different size/speed codegen
balanced-min	—	—	—	min, faster QuickJS codegen

tuned-min and balanced-min add no API. See Size and speed for their measured trade.

Every profile keeps Web Crypto, REPL and tjs compile. Every profile removes WebAssembly, tjs:wasi, plus tjs eval, serve, bundle, test, app and help.

Install

VERSION=slim-v26.6.0-8
ASSET=txiki-slim-min-linux-x86_64.zip

curl -fsSLO "https://github.com/lukasMega/txiki.js-with-slim-builds/releases/download/$VERSION/$ASSET"
unzip "$ASSET"
cd "${ASSET%.zip}"
chmod +x tjs
echo 'console.log(tjs.version)' | ./tjs

Assets are named txiki-slim-{profile}-{platform}.zip, where the platform is linux-x86_64, linux-arm64, macos-arm64 or windows-x86_64. Each archive unpacks into its own directory containing the executable, BUILDINFO.txt and SHA256SUMS.

Inspect any binary through stdin:

echo 'console.log(tjs.engine.features, tjs.engine.cli)' | ./tjs

Windows installation and checksum verification

$Version = 'slim-v26.6.0-8'
$Asset   = 'txiki-slim-min-windows-x86_64.zip'

Invoke-WebRequest -Uri "https://github.com/lukasMega/txiki.js-with-slim-builds/releases/download/$Version/$Asset" -OutFile $Asset
Expand-Archive $Asset -DestinationPath .
Set-Location ($Asset -replace '\.zip$','')
'console.log(tjs.version)' | .\tjs.exe

A single release-level SHA256SUMS.txt verifies every unpacked executable. Run it from the archives' parent directory, not from inside a profile directory:

cd ..
curl -fsSLO "https://github.com/lukasMega/txiki.js-with-slim-builds/releases/download/$VERSION/SHA256SUMS.txt"
sha256sum --check --ignore-missing SHA256SUMS.txt

--ignore-missing verifies the profile you downloaded without requiring the other 31 artifacts. BUILDINFO.txt records the profile, codegen mode, feature vector, platform, size in bytes, SHA-256 and MSVC status.

Platform caveats and recorded archive sizes

On MSVC nine of the eleven size and hardening levers are compiled out, so Windows binaries are roughly 10–27% larger than their Unix counterparts and are shipped as a deliberately non-hardened profile. Linux GCC has no -Oz either, so min, tuned-min and the current balanced-min recipes collapse onto the same binary on both Linux and Windows — macOS arm64 is the only platform where the codegen choice changes anything. slim-v26.6.0-8 was built with the previous balanced recipe, so its balanced-min row does not represent the next release.

Compressed archive sizes from slim-v26.6.0-8 (2026-08-24):

profile	linux-x86_64	linux-arm64	macos-arm64	windows-x86_64
min	1.03 MB	1.10 MB	1.07 MB	1.31 MB
tuned-min	1.03 MB	1.10 MB	1.05 MB	1.31 MB
balanced-min	1.03 MB	1.12 MB	1.11 MB	1.32 MB
ffi	1.06 MB	1.13 MB	1.10 MB	1.35 MB
tls	1.31 MB	1.40 MB	1.36 MB	1.62 MB
sqlite	1.49 MB	1.62 MB	1.57 MB	1.79 MB
ffi-tls	1.34 MB	1.43 MB	1.39 MB	1.66 MB
ffi-tls-sqlite	1.80 MB	1.95 MB	1.90 MB	2.14 MB

These are ZIP sizes; the unpacked executable is roughly twice as large. Build from source when none of the eight fits — for example TLS without the embedded CA bundle, or WebAssembly.