Watermark PDF — Add a Watermark to Every PDF Page Free

Drop a PDF, type "CONFIDENTIAL" (or any other text), keep position on Diagonal, adjust opacity and color, then Apply & Download. The watermark is stamped on every page as real PDF text — selectable, vector-sharp at every zoom level — not a rasterised overlay.

Eight positions plus Diagonal: Top-Left, Top-Center, Top-Right, Center, Bottom-Left, Bottom-Center, Bottom-Right (all upright) and Diagonal (rotated, large, centered). Diagonal is the classic anti-copy watermark; corner positions are good for branding or version stamps.

Yes — the watermark is part of the page content, not viewer-side decoration. It prints, exports, and screenshots along with the document. Bypassing it requires re-creating the PDF from scratch.

Text — we draw real vector text in the embedded Helvetica Bold standard font, so it scales infinitely without pixelation and adds minimal bytes to the file. For image/logo watermarks on PDFs, place your logo on the first page of a blank PDF then merge it on top.

Use the opacity slider — 20-30% is the typical sweet spot for "visible but unobtrusive". The color also matters: light grey at 30% reads as a soft watermark on white pages, while red or orange grabs attention even at lower opacity.

Currently all-or-nothing — the watermark applies to every page in the PDF. To watermark a subset, split the PDF with our Split PDF tool, watermark only the parts you want, then merge them back together.

Your PDF is uploaded over HTTPS so the watermark can be applied, then handled under our Security policy. If you create a share link, anyone with that link can open the result for up to 30 days. Review your organization's requirements before processing confidential files.

Free with a daily allowance — Premium removes the cap — and no watermark on the watermark (we don't add our own branding). All settings save in your browser session for quick repeat use.

Drop your PDF, type the watermark text, choose a position (Diagonal for the classic anti-copy look, or any of the eight corner/edge spots), set the opacity, color and font size, then click Apply & Download. A live preview of page 1 shows exactly how it will look before you commit, and the same text is stamped on every page.

Drag the Font size slider from 10pt up to 120pt — the live preview on page 1 updates instantly so you can see exactly how large the stamp will look before applying it to every page. Larger sizes (80pt+) suit a bold diagonal warning, while smaller sizes (20-30pt) work better for a discreet corner stamp.

Yes — the Rotation slider runs from -90° to 90° and is only active when Position is set to Diagonal, since corner and center positions stay upright to avoid running text off the page. The default -30° gives the classic anti-copy stamp look, but you can flatten it toward 0° for a more subtle tilt.

Each quick preset fills in both the watermark text and a matching color in one click — CONFIDENTIAL in red, DRAFT in grey, COPY in blue, APPROVED in green and so on. It's a fast starting point you can still fine-tune afterward with the color picker, opacity slider or by typing your own custom text.

For a classic anti-copy watermark, use Diagonal position with rotation around -30°, opacity at 20-25% so the text stays readable, a neutral grey or muted red color, and font size 50-70pt. For subtler branding or version marking, switch to a corner position like Bottom-Right with a smaller font size (20-30pt) and slightly higher opacity.

Yes — click the color swatch to open the full picker: drag the saturation/hue square, type an exact hex code, or use the eyedropper (supported in Chrome and Edge) to sample a color straight off your screen, like from a logo. The 9 quick-pick presets next to it are just shortcuts and don't limit what color you can actually apply.

Yes — Pixoate supports batch and bulk processing. Switch to Batch mode, add up to 60 PDFs on Premium or 200 on Pro, set your options once, and every PDF is processed with the same settings before you download a single ZIP. Bulk processing is a Premium feature; the output uses the same quality and settings as single mode.

Yes — with bulk processing you configure the settings a single time and they apply to every item in the batch — up to 60 PDFs on Premium or 200 on Pro. There is no need to repeat the setup per item, and Temporary uploaded and generated files are processed securely and deleted automatically.

Almost always one of three things. The file is over the 20 MB free upload limit — Premium takes 50 MB and Pro 120 MB. The format is not one this tool accepts, so check the list shown on the upload panel. Or the file is not really the format its name says: renaming a file does not change what is inside it, and that is the reason a valid-looking PDF gets refused.

Page content is preserved, but anything that depended on the original file being interactive can behave differently — form fields, layers and annotations may be flattened into the page depending on the operation you ran. If you need the fields to stay fillable, do the flattening step last. Keep the untouched original until you have checked the output end to end.

Watermark PDF supports free standard use within the published processing allowances. Free downloads are clean — no watermark. No signup is required for standard tool use. Photo effects and AI edits have a web-size limit on Free, with the original-resolution result available through Premium or one credit. Crop, resize, rotate, compress and convert stay full size. Premium supports batches of up to 60 files, with the applicable plan limits shown before processing.

No — Watermark PDF runs in the browser on desktop and phone. There is nothing to install, no trial to start, and no license to buy before you can see whether it does what you need. Try it on the file you are actually stuck with rather than a sample.