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Add a text or logo watermark to any PDF or image. Choose position, opacity and rotation. Fast, free and secure.
Protect your work and brand every document or photo you share by stamping it with a custom text watermark — like DRAFT, CONFIDENTIAL, or your own name — or by overlaying your logo image on top. Whether you are a photographer guarding proofs against copying, a business branding invoices and reports, or a student marking an assignment as a draft, a clear watermark discourages misuse while still letting the content be read. You stay in full control: type any text or upload a PNG / JPG logo, then fine-tune the size, color, opacity and rotation until it sits exactly right, and place it in a single corner, dead-center, or repeat it as a tiled pattern across the whole page so it cannot be cropped out. A live preview updates as you adjust, so there is never any guesswork. Everything runs right in your browser with no upload and no account, and it is completely free — no extra watermark added on top of yours, no file limits, no hidden charges.
Add a watermark in 4 simple steps
Select or drag & drop a PDF or image (JPG, PNG, WEBP).
Pick a text watermark or upload your own logo image.
Set opacity, rotation and position — or tile it across the page. Preview it live before downloading.
Click "Add Watermark" and your file downloads instantly.
Flexible watermarking, zero hassle
Stamp a custom text message or your own logo image.
Place your watermark exactly where you want, combine multiple spots, or tile it across the page.
Works on both PDF documents and JPG, PNG, or WEBP images.
Your files never leave your device — everything runs locally in your browser.
Even large files get watermarked and downloaded in seconds.
No hidden fees, no extra watermarks, no file limits.
Watermarking is useful for many document and image types
Use low opacity (20-40%) so the watermark doesn't obscure the original content.
The classic diagonal look (rotation around -30°) is the most common style for "DRAFT" or "CONFIDENTIAL" stamps.
Use "Repeat / Tile" mode for maximum protection against cropping — copies appear across the whole page.
For logos, a transparent PNG works best so the watermark blends naturally.
Yes! Mishu PDF's Watermark tool is 100% free — no hidden charges, no subscription, no extra watermarks added.
Yes, simply tick more than one position (e.g. Top Center and Bottom Center) and the watermark will be stamped at every position you select.
Yes, this tool automatically detects whether you uploaded a PDF or an image (JPG, PNG, WEBP) and applies the watermark accordingly.
Yes, switch to "Logo Image" mode and upload your own PNG, JPG, or WEBP logo file to use as the watermark.
Absolutely. Your files are processed entirely in your browser — nothing is ever uploaded to any server.
Protect & prepare your files after watermarking