Toolerax

Toolerax is a free toolbox for the small jobs that don't deserve a software install - merge a PDF, resize an image, decode a JWT, calculate a mortgage. 169 tools across PDF, image, text, converters, calculators and developer utilities, no account required.

101 of them run entirely client-side using Canvas, WebAssembly and the Web Crypto API, so the file is processed on your own machine and never uploaded - verifiable by watching the Network tab while a tool runs. The other 68 need a real office or image engine for formats a browser can't parse (HEIC, PSD, EPS, legacy Office and OpenDocument files, OCR) and run server-side, file deleted the instant the result returns.

Built and maintained solo out of Dhaka, Bangladesh.