About & sources

On-device tools for JPG, PNG, WebP and PDF files. Resize, convert, crop and flip images; merge, extract, remove, reorder and render PDF pages; add page numbers and text watermarks; fill supported existing PDF form fields. The site has no file-processing server, analytics or ads.

Bundled engines: pdf-lib 1.17.1 (MIT), PDF.js 6.4.299 (Apache-2.0), fflate 0.8.3 (MIT). Third-party licences. PDF forms are limited to supported AcroForm fields, not XFA, scanned forms or signatures. See limits in the tool. PDF editing is not redaction and can invalidate signatures.

We aim for this site to be usable with assistive technology (screen readers, keyboard navigation, zoom), in line with WCAG 2.2 AA. If something is hard to use, email us and we will fix it.

Source and method checked October 6, 2026. For questions or corrections, contact us by email.