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Merge, split, compress and watermark PDFs — all editing tools in one place.
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PDF onlyFrequently Asked Questions
Yes, completely free. All processing happens in your browser using open-source libraries. No account, no subscription, no limits.
Yes — add as many PDFs as you need. There is no hard limit. Very large files may take longer since all processing happens in your browser's memory.
Typically 20–60% reduction depending on the PDF's content. PDFs with redundant metadata, unoptimized streams, or embedded resources see the largest gains. Already-optimized PDFs may see smaller reductions.
No — the watermark is added as a text layer on top of existing content. The original content remains intact. Using 20–40% opacity keeps your document clearly readable.
No — everything runs locally in your browser using PDF-lib. Your files never leave your device and are completely private.