Watermark PDF

Stamp your claim.

Every page.

Drop your PDF here

or tap to browse  ·  max 200 MB

Drop watermark image PNG, JPG, SVG, WebP  ·  tap to browse
No upload
Works offline
No idea what's in your file

Need to watermark documents in bulk? The offline bundle handles batch watermarking with no size limit. $99 once.

Get Bundle →
// How it works

Three steps. Zero uploads.

01
Drop
Drag your PDF and watermark image onto the page. Both stay on your device.
02
Stamp
Position, resize, and adjust opacity of your watermark. Apply to all pages or just the first. Everything is previewed live in your browser.
03
Download
Save the watermarked PDF. Nothing was ever uploaded.
// Why this is different

Your documents never leave your machine.

Most online watermark tools upload your PDF and your logo to a remote server, stamp them together there, and send back the result. Both your document and your branding pass through systems you don’t control.

fwip works differently. The watermark engine runs entirely in your browser. Your PDF is read from your device, processed on your CPU, and the result is saved back to your device. No server is involved. We literally cannot see your file.

No server processing

Everything runs on your device using WebAssembly. Your file never touches a network.

No account required

Drop a file. Get a result. No sign-up, no email, no password.

No subscription

Free in the browser. $99 once for the offline bundle. That's it. Forever.

Works offline

The desktop version works with no internet connection at all.

// Questions

Frequently asked.

How do I add a watermark to a PDF for free?▾
Drop your PDF and a watermark image (PNG, JPG, SVG, or WebP) onto fwip. Position and resize the watermark, adjust opacity, then save. Everything runs in your browser with no upload.
Can I watermark all pages of a PDF at once?▾
Yes. fwip lets you apply the watermark to all pages or just the first page. You can adjust the position, size, and rotation before applying.
How do I watermark a PDF without uploading it?▾
fwip processes the file entirely in your browser. Your PDF and watermark image are read from your device, combined locally, and the result is saved back to your device. No server is involved.
What image formats can I use as a watermark?▾
fwip accepts PNG, JPEG, SVG, and WebP images as watermarks. PNG with transparency works best for logos and branding overlays.
Can I control watermark opacity and position?▾
Yes. fwip provides a live preview where you can drag to reposition, use the corner handle to resize, and adjust opacity from 5% to 100%. You can also rotate the watermark 0°, 45°, or −45°.
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