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Watermark PDF

Places text or image marks across PDF pages. It is useful for drafts, internal copies, review states, and branded document handoffs.

Processing

Runs in your browser. The file and result are not sent to Utilio servers.

How Utilio handles dataWhy files stay on your devicePrivacy Policy

Watermark PDF

Apply a text watermark to every page.

Settings

Result

Choose files and run the tool to see the result.

Files
0
output files
0

What to open next

Related tools and guides for the same job.

Compress PDFSend contracts, scans, reports, or coursework under a strict file-size limit.Sign PDFAdd a visible name or approval note to a PDF before returning it.Merge PDFJoin a cover sheet, contract, appendices, and signed scan into one handoff file.Add Page NumbersNumber appendices, scan packets, or review drafts before sending them out.Rotate PDFCorrect landscape pages inside a portrait scan packet.Protect PDFAdd a password before emailing personal or internal documents.

What Watermark PDF does

Use Watermark PDF when you need to mark a document as Draft, Confidential, Sample, or Internal Use.

When to use it

  • Mark a document as Draft, Confidential, Sample, or Internal Use.
  • Add a logo, stamp, or reference text before sharing a PDF.
  • Make screenshots or redistributed copies easier to identify.

How to use it

  1. Add the PDF and choose text or image watermark mode.
  2. Set watermark text, opacity, size, and placement.
  3. Export and inspect both light and dark page areas.

What to check

  • Low opacity may disappear on busy scans; high opacity may cover text.
  • Watermarks are visual marks and do not prevent copying by themselves.

Data, formats, and limits

What stays on your device and what is sent

Runs in your browser. The file and result are not sent to Utilio servers.

Supported formats

Supported: PDF, PNG, JPG, JPEG, WebP. Not supported: DOCX, XLSX, PPTX, HEIC, SVG, ZIP.

File limits and browser requirements

  • Up to 100 MB per PDF
  • Runs in browser memory, so very large, scanned, or image-heavy PDFs can be slow or fail on low-memory devices.
  • Encrypted or damaged PDFs may not open unless the specific tool supports that workflow.

Known limits

  • Runs in browser memory, so very large, scanned, or image-heavy PDFs can be slow or fail on low-memory devices.
  • Encrypted or damaged PDFs may not open unless the specific tool supports that workflow.

Troubleshooting

  • If the PDF does not open or processing stops, try a smaller file or close extra tabs to free browser memory.
  • If the file is password-protected or damaged, first confirm it opens in a regular PDF viewer.
  • If the file is in an unsupported format (DOCX, XLSX, PPTX, HEIC, SVG, ZIP), convert it into a supported PDF first.
All PDF toolsPrivacy PolicyHow Utilio handles data

Common questions

What does Utilio receive?

Runs in your browser. The file and result are not sent to Utilio servers.

What is it useful for?

Use it when you need to mark a document as Draft, Confidential, Sample, or Internal Use. Start by adding the PDF and choose text or image watermark mode.

Do I need an account?

No. You can use this tool without creating an account.

Can I use it on a phone?

Yes. For large files, complex previews, or careful review, a browser on a computer is usually more comfortable.

How do I get a reliable result?

Add the PDF and choose text or image watermark mode. Then set watermark text, opacity, size, and placement. Low opacity may disappear on busy scans; high opacity may cover text.

Which formats are supported?

Watermark PDF supports PDF, PNG, JPG, JPEG, WebP. It does not support DOCX, XLSX, PPTX, HEIC, SVG, ZIP.

What file size works best?

Up to 100 MB per PDF. Browser memory and device speed can still affect large files.

Why did I not get the result I expected?

Runs in browser memory, so very large, scanned, or image-heavy PDFs can be slow or fail on low-memory devices. If the result still looks wrong, try a smaller or simpler input and review the output before using it.

Does Utilio use my input or results to train AI?

No. Utilio does not use files, pasted text, settings, generated values, or results from this tool to train AI models.