NothingLeaves – Browser-based tools that keep your data local

Summary: NothingLeaves offers free browser tools that process images, text, and data entirely on your device without uploading files. It includes batch image compression, QR code generation, regex find & replace, token counting, and text diffing, all running locally with no sign-up or tracking.

What it does

It provides eight tools that operate fully in the browser, including batch image compression with quality previews, customizable QR codes, style-guide title casing, regex find & replace, GPT token counting, and side-by-side text diffing.

Who it's for

Users who need privacy-focused, offline-capable utilities for image and text processing without uploading data to servers.

Why it matters

It prevents file uploads and data storage on external servers, ensuring user data never leaves their device during processing.