SiteDev Utilities & Vibe-Coding Tooling · UnJS toolkit
PDF utilities for Node, browsers and edge workers that extract text, metadata and page images from a serverless-safe PDF.js build.
Why it’s a gem
The rare PDF library that actually runs in a Cloudflare Worker.
Markdown maintainer that regenerates blocks in your README from live data such as package metadata, file contents or badges.
Dependency-free QR code generator that renders to SVG, Unicode or ANSI in any JavaScript runtime including edge workers.
Programmatically edit JavaScript and TypeScript source files by mutating a proxied AST, preserving original formatting on write.
Self-hosted image proxy built on sharp that resizes, crops and reformats images from URL path modifiers, with caching.
Build plugin that generates metric-matched local fallback fonts automatically, eliminating layout shift while a webfont loads.
Downloads templates and subdirectories from GitHub, GitLab or Bitbucket into a local folder, with caching and offline support.