33
PDF Studio
An Acrobat-style PDF toolkit that runs entirely in the browser.
The everyday PDF jobs — combine a few files, pull out a page range, shrink a scan small enough to email, drop a DRAFT watermark, turn photos into a PDF — usually mean a paid Acrobat seat or uploading sensitive documents to a free web converter whose privacy terms nobody reads. Both are bad options for a quick, one-off task on a file you'd rather not hand to a stranger's server.
A single-page app with eleven focused tools on a shared work surface, styled in the cloonk light/dark system. pdf.js handles rendering, search, and text extraction; pdf-lib handles every structural edit (merge, split, rotate, reorder, delete, watermark, page numbers, metadata, image embedding); JSZip packages multi-file downloads. The compressor re-renders pages to JPEG at a chosen DPI and quality. Nothing is uploaded — there is no backend.
- Eleven tools — organize/view, merge, split, compress, watermark, page numbers, metadata, images→PDF, PDF→images, extract text, image compressor — in one browser tab
- Files never leave the device; the privacy guarantee is structural, not a promise
- Free, login-free, installs nothing, works offline once loaded
On-device is a feature, not a footnote
For documents, 'nothing is uploaded' is the whole value proposition. Browsers can now render, rewrite, and repackage PDFs entirely client-side — so the honest version of a PDF tool is one with no server to send your file to in the first place. The constraint and the selling point are the same thing.