How It Works

Everything runs in your browser

When you drop a file into any WeConvertIt tool, it is read by your browser using the File API — a standard web feature that gives JavaScript read access to files you explicitly choose. The file bytes never leave your computer. No upload happens. No request is made to a server carrying your document.

The libraries doing the work

The heavy lifting is done by open-source libraries that ship with the page and execute inside your browser tab:

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  Canvas API — Built into every browser. Used for image conversion and compression — pixels are drawn to an off-screen canvas and re-encoded without touching a server.

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  PDF.js — Mozilla's PDF rendering engine, the same one inside Firefox. Used to render PDF pages as images for the PDF to JPG tool and the OCR tool.

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  pdf-lib — A pure-JavaScript PDF manipulation library. Used to merge, split, and annotate PDFs entirely in memory.

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  Tesseract.js — A WebAssembly port of the Tesseract OCR engine. Runs in a Web Worker so recognition never blocks the page — and never contacts a server.

What is never collected

WeConvertIt does not collect, store, or transmit your files. There is no account system, no persistent storage of documents, and no logging of file names or contents. The only network requests the page makes are for loading the page itself and the JavaScript libraries — your documents are not part of any of those requests.

Browser compatibility

All tools work in any modern browser: Chrome, Firefox, Safari, and Edge. The File API, Canvas API, WebAssembly, and Web Workers used by the tools are baseline web standards available since 2018. No extensions or plugins are required.