Merge, split & convert PDFs locally
Merge, split, rotate, extract pages, images-to-PDF, PDF metadata and page counter. Files never uploaded — processed with pdf-lib in your browser.
In-content · after first value section
Why PaperFlux?
The big suites monetize uploads and queues. PaperFlux merges and converts instantly on-device, shows thumbnails, and proves no-upload in Network panel.
FAQ
Is it free?
Yes — every tool is free with no signup and no credits.
Is my data uploaded?
No. Tools run locally in your browser; files never leave your device. Check DevTools → Network.
Does it work offline?
After the first visit the app shell is cached, so calculators and generators keep working offline.
Does it work on mobile?
Yes — touch-friendly, one-tap download, adaptive workers for weak devices.
How do you make money?
Clearly-labeled ads, spaced away from buttons. No paywall, no fake download buttons.
Guides
How to merge PDFs safely · Reduce PDF size without killing quality · PDF or image? choosing a format · OCR a scanned PDF locally · Redact PDFs for real — practical, original explainers with examples.