Super ToolKit A lightweight, ad-free collection of browser tools for audio, PDFs, and code that runs entirely in your local memory with zero cloud uploads.
The issue with existing tools: Almost every online converter makes you upload sensitive files to a remote cloud server, limits you to 2 free files a day, and covers the screen in ads.
The approach: SuperToolKit handles the work directly inside your browser sandbox using WebAssembly, the Web Audio API, and background Web Workers.
True privacy: Your device's hardware does the computing. Audio editing, PDF merging, and file conversions happen in local memory—nothing ever gets sent across the internet.
Works offline: Built as a Progressive Web App (PWA) with service worker caching, so all utilities work even in airplane mode.
No friction: Completely free to use with no account creation, no subscription tiers, and no advertisements.
Top comments (0)