Add a diagonal watermark stamp (DRAFT, CONFIDENTIAL, etc.) to every page of your PDF. Everything runs locally in your browser — nothing is uploaded.
Add text watermarks to every page of multiple PDF files at once. Protect your documents with DRAFT, CONFIDENTIAL, or custom text. Everything runs locally in your browser — nothing is uploaded.
Overlays text or image watermarks onto every page of a PDF with customizable position, rotation, opacity, and tiling. Everything runs locally in your browser — nothing is uploaded.
Inserts page number labels at user-chosen positions (bottom-center, top-right, etc.) with configurable font, size, and starting offset. Everything runs locally in your browser — nothing is uploaded.
Add a logo image or custom text watermark to your videos with position and opacity controls. 100% browser-based.
Remove the visible sparkle watermark from Gemini AI-generated images using reverse alpha blending. Supports single image and batch processing with ZIP download. 100% client-side — nothing is uploaded.
PDF Stamp lets you add a diagonal watermark stamp (DRAFT, CONFIDENTIAL, etc.) to every page of your PDF. Everything runs locally in your browser — nothing is uploaded.. It works on any device with a modern web browser.
Add a diagonal watermark stamp (DRAFT, CONFIDENTIAL, etc.) to every page of your PDF. Everything runs locally in your browser — nothing is uploaded. It runs entirely in your browser — no software installation or data uploads required.
Upload a file from your device. Drag and drop or use the file picker to select your document.
Yes. After the initial page load, PDF Stamp runs entirely on your device with no internet connection needed. All processing is done locally.
Add a diagonal watermark stamp (DRAFT, CONFIDENTIAL, etc.) to every page of your PDF. All processing runs locally in your browser — no files are uploaded to any server.
Yes. Your PDFs never leave your device. All operations happen in-browser using pdf-lib or similar local libraries.
Standard PDF files (versions 1.0–2.0). Encrypted or password-protected files may need to be unlocked first.
No hard limits, but very large PDFs (500+ pages or 100MB+) may process slower on low-memory devices.