ClarityKitFind a tool

PDF WORKSPACE · FREE & PRIVATE

Watermark PDF

Add a light diagonal text watermark to every page of a PDF.

✓ Files stay on your device✓ No account needed✓ No daily usage quota
1

Choose a file

or drag and drop it here

PDF · 20 MB total

    2

    Adjust your options

    How to use Watermark PDF

    1. Choose a supported file using the file picker or drag and drop.
    2. Set watermark text (latin characters).
    3. Select Process, review the result, and download it.

    The method, explained

    Translucent text is drawn over each page. The original page content remains underneath.

    A WORKED EXAMPLE

    Mark a draft proposal with DRAFT before sharing a review copy.

    What to keep in mind

    PDF tools accept unencrypted PDFs, up to 20 MB total and 200 pages. Editing may discard bookmarks, interactive forms, attachments or signatures. Keep an original copy. Text extraction is not OCR, and scanned pages may contain no text.

    Common questions

    Are my files uploaded?

    No. This tool processes files in your browser. Files are not sent to ClarityKit or an external API. Reset the tool or close the tab to release the working files.

    What should I do if processing fails?

    Check the supported formats and limits above. Try a smaller, unencrypted file and keep the tab open until the result is ready.

    Built and checked by ClarityKit. File privacy · Open-source notices