PDF Text Watermark Tool
Add a centered text watermark to every PDF page with adjustable opacity and an embedded Unicode font.
Your input is sent to this site only after you choose Convert on server. The conversion runs for this request and no history is saved. Upload up to 4 MiB combined; Office files have a 2 MiB limit.
Choose your file
Choose a file or load the example to see how the converter works.
Choose your options
The defaults work for most files. Change a setting only when you need to.
How to use PDF Text Watermark Tool
- Choose the example or select your input files in the required format.
- Check the options, then select Convert on server to upload and process the input.
- Review the result and download the converted file.
What this conversion produces
Mark a review copy or identify the intended use of a document with a visible text overlay. Enter a short watermark and choose its opacity. The tool adds the same centered, diagonal mark to every page using an embedded font. The existing page content remains beneath the overlay and is not converted into an image.
Supported input and practical limits
A watermark is not encryption, ownership proof or access control, and it does not prevent copying or editing. The text is limited to 80 supported left-to-right characters and scales to fit the page. Existing page rotations affect the visual placement in some viewers, so inspect the output. Input must be unencrypted PDF within 200 pages and 4 MiB, and modification invalidates existing digital signatures.
What should I know before converting?
A watermark is not encryption, ownership proof or access control, and it does not prevent copying or editing.
Is input uploaded?
This tool sends input to this site’s conversion API after you select Convert on server. Files use bounded workers and, when needed, private temporary folders deleted after processing or cancellation. No conversion history is saved. The converter does not upload files to a third-party conversion service.