PDF editing & optimization tools
Watermark and compress: stamp text or image watermarks with full CJK support and free control of opacity, rotation and position, or shrink files with three compression levels — all locally in your browser.
Free·No signup·Files never leave your device
Edit & Optimize
Edit and optimize PDF files
Four tools cover the edits people make most often — shrinking files, marking ownership, signing, and filling forms — and all four run entirely in your browser.
Compress PDF brings oversized files back under email caps and upload limits with three quality levels: High keeps near-original clarity, Recommended balances the two, and Extreme squeezes scans and image-heavy documents hardest. The result card shows original size, new size, and the exact percentage saved before you download. The trade-off is stated honestly — pages are re-encoded, so compressed files trade selectable text for size.
Watermark stamps text or an image logo across every page with full control: nine positions, adjustable size, opacity, and rotation, and complete Chinese, Japanese, and Korean support that most online watermark tools skip. Draft copies, confidential batches, and portfolio proofs all take one pass.
Sign PDF lets you draw a signature once with mouse or finger, then place it on any page at any size — contracts, delivery receipts, and consent forms without printing a thing.
Fill PDF Forms types into real form fields, keeps existing values, and can flatten the answers so nobody edits them after you send the file.