Web apps for manipulating files that work entirely client-side
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Privacy concerns have driven a new wave of web applications that process files entirely in your browser. These tools leverage modern web technologies like WebAssembly and the File API to perform complex operations locally, ensuring your data never leaves your device. Here are some examples:
SimpleTool by QuickQuick
Includes utilities for Excel files, PDFs, images, text files (Markdown, JSON, CSV), videos, audios, and more. Everything runs directly in your browser.
Client-Side Kit
Convert images, edit documents, optimize files — powerful utilities that run entirely in your browser. Nothing uploaded. Nothing tracked.
FileSlim
Compress images, PDFs, documents and audios, generate QR codes, convert between different formats. No servers. No sign-up. No limits.
brevtool
120+ tools that process PDFs, images, video, code, and data entirely in your browser. Nothing uploaded. Nothing tracked.
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