Privacy-First Toolbox
Free online suite of 75+ file converters & developer utilities with 100% in-browser processing.
Key Metrics & Impact
75+ Free browser-based tools available
0 Bytes uploaded to external servers — 100% private
Launched and featured on Product Hunt
100% Offline-capable after initial service worker cache
Pain Point & Friction
Every major online document converter (PDF to Word, image compression, metadata stripping) requires uploading confidential documents to unfamiliar backend servers, creating data leak vulnerabilities and high cloud infrastructure bills.
Engineered Approach
Developed an entirely client-side web application leveraging WebAssembly and background Web Workers. Large PDFs are compressed, merged, and split in-memory, while high-resolution images are converted and resized via Canvas APIs without a single byte transferred to an external server.
⚡ Core Features
- ✓PDF manipulation: compress, merge, split, rotate, unlock, metadata editor
- ✓Multi-format image converter: JPG, PNG, WebP, SVG, GIF, BMP, ICO
- ✓Developer utility suite: JSON formatter, schema comparator, CSV/TypeScript generators
- ✓Crypto & security tools: client-side hash generators, text diffing, encoding/decoding
- ✓Fast drag-and-drop batch processing with zero account setup
⚙ Architecture & Engineering
- →Next.js App Router with Geist font optimization and static pre-rendering
- →Web Workers offloading CPU-intensive conversions off the main UI thread
- →WebAssembly binaries for high-performance PDF manipulation
- →HTML5 Canvas API for client-side raster and vector image transcoders