Text, image, and font
Write any message or use a logo, signature, or stamp in PNG or JPG. Imported fonts appear in preview and are preserved as graphic marks in output.
MINI TUTORIAL · PDF LAB
Mini tutorial: create a visual watermark on real PDFs
- 1. Import one or more PDFs. The compact batch panel on the left shows a real first-page thumbnail for every document.
- 2. Choose Text or Image. Write the message, set color, size, opacity and rotation, and optionally import a TTF, OTF, WOFF, or WOFF2 font.
- 3. Drag the mark across the large real-page preview. Use ready positions whenever you want an exact point.
- 4. Choose Smart for every page size, Same format for pages with matching dimensions, or Individual page for one exception.
- 5. Generate one PDF or the full batch and inspect the real output before downloading a file or ZIP.
GUIA · PDF LABComplete guide: PDF watermarks with text, image, font, and smart placement⌄
A visual workspace for marking documents without guessing the outcome
Watermarking should not be a blind setting. This tool renders a real PDF page in the center of the workspace and draws the mark on top before processing, so size, transparency, rotation, and placement are visible first.
The editor handles mixed documents: A4, receipts, landscape scans, and unusual page dimensions can coexist in the same batch. Placement is stored as a page proportion rather than screen pixels, so it follows the correct format in the exported PDF.
Use it for review copies, confidential material, drafts, internal versions, training assets, or any file that needs a visible identity. The original is never replaced; every process creates a new local PDF.
Real-page preview
The central area renders the selected PDF page. Browse pages, drag the mark, and check the composition before processing.
Smart placement
Smart mode keeps center and edge references proportional and is ideal for varied page sizes.
Same format
Changes affect only pages with the same dimensions. A4 pages do not move marks on receipts or landscape pages.
Individual page
Use an exception without breaking the shared setup for the remaining pages.
Batch, preview, and reprocessing
Each PDF has its own progress and result. Changed settings clear old copies but keep the imported batch ready.
Frequently asked questions
Are files uploaded?⌄
No. Import, rendering, editing, output, preview, and download stay in the browser.
Is the original changed?⌄
No. A separate watermarked copy is created.
Smart versus Same format?⌄
Smart applies global proportional placement; Same format shares an adjustment only between pages with matching width and height.
Can I adjust one page?⌄
Yes. Select Individual page and drag the mark on that page.
Does image transparency work?⌄
Yes for PNG; JPG has no transparency channel.
Does the imported font export?⌄
Yes. It is embedded as a graphic watermark so its look is preserved.
Can I target pages?⌄
Yes. Use ranges such as 1-3, 5, 8-10 or leave the field empty.
Can I reprocess?⌄
Yes. Old output is cleared while the batch remains loaded.
For readable documents, start between 15% and 35% opacity. Very dark or large marks can hide signatures, codes, and important text.
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