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Add Image Watermark to PDF Online Free
Add text or image watermarks to your PDF documents with customizable position, transparency, and formatting
Drop PDF file here or click to browse
Supports PDF files up to 50MB
Adding watermark to your PDF...
This may take a moment depending on your PDF size.
Upload your PDF, type your watermark text, choose position with a simple 3×3 grid, set transparency and rotation, then click Add watermark to download a clean, readable, watermarked PDF. Everything runs privately in your browser.
What the Text Watermark Tool Does
This tool lets you add text watermarks to PDFs in seconds with full control over look and placement. You can anchor text anywhere on the page, set transparency, pick a font and size, rotate at an angle, and apply the mark to exact page ranges. Because processing happens locally in your browser, sensitive documents never leave your device. It’s quick, private, and reliable for daily publishing tasks.
The UI is split into two clear zones. On the left, a thumbnail preview grid shows each page. On the right, a focused control panel includes tabs for Place text and Place image, a text input, text formatting controls, a 3×3 position grid, optional Mosaic tiling, transparency presets, a rotation dropdown, page range selectors, and the Add watermark area with Over the PDF or Below the PDF stacking plus the primary Add watermark button.
Key Features for Watermarking
- Fast text watermarking directly in your browser with no uploads.
- Two tabs: Place text for this workflow and Place image when you need a logo.
- Text format controls: font family dropdown, size selector, bold, italic, underline, and a color picker.
- 3×3 position grid to anchor top, middle, or bottom in left, center, or right columns.
- Mosaic checkbox for repeating the watermark across the page in a pattern.
- Transparency presets to keep content readable while your mark stays visible.
- Rotation options including 45° clockwise for classic diagonal watermarks.
- Page range selectors to target from page X to page Y only.
- Add watermark section with Over the PDF and Below the PDF stacking modes.
- Clear success block: “Watermark added successfully!” with a Download Watermarked PDF button.
How to Use the Tool Step-by-Step
You’ll recognize everything at a glance, and setup takes less than a minute. Follow this sequence to mirror the screenshots and get predictable results every time.
- Upload your PDF: Use the top upload box or the secondary Choose PDF File block. The left side fills with page tiles.
- Pick the right tab: In the control panel, stay on Place text for this tool.
- Enter your text: In the Text field, type your message. Common choices are DRAFT, CONFIDENTIAL, or your company name.
- Format the text: Choose a font like Helvetica, set size such as 36px, and toggle bold, italic, or underline. Use the color picker to match your brand.
- Choose position: Click a cell in the 3×3 grid. Middle center is versatile. Bottom right is subtle and editorial.
- Optional Mosaic: Check Mosaic if you want a repeated pattern over the whole page.
- Transparency and rotation: Select a transparency preset and use the Rotation dropdown. 45° clockwise is a dependable diagonal.
- Set page range: Use the from page and to page fields to target exactly where the watermark appears.
- Stacking mode: In Add watermark, pick Over the PDF for a strong overlay or Below the PDF for a soft background mark.
- Apply and download: Click Add watermark. When you see “Watermark added successfully!” hit Download Watermarked PDF.
If a page looks too busy, tweak transparency or position and apply again. Every change is quick because the tool works locally in your browser.
Benefits of Adding Text Watermarks
- Brand clarity: Reinforce ownership on brochures, ebooks, and proof copies.
- Review control: Label drafts, classroom handouts, or internal policy docs without altering content.
- Reader-friendly: Transparency presets and rotation keep body text legible.
- Selective coverage: Apply to specific sections with page ranges, leaving front matter clean.
- Private by design: Files never leave your device, which is essential for contracts and student records.
The result is a clean PDF where your message is visible yet respectful of layout and typography. It looks intentional, not improvised.
Real Example — diagonal “DRAFT” watermark across selected pages
Here’s a setup many teams use. You have a 40 page policy document in review. You want DRAFT across pages 2 through 12. Type DRAFT in the text field, choose Helvetica 36px, bold on, medium gray color. Click the center cell in the 3×3 grid, set transparency to 50 percent, rotation to 45° clockwise, and choose Below the PDF. Enter the page range 2 to 12, then click Add watermark. The success block appears, and Download Watermarked PDF gives you a readable draft with a clear diagonal mark.
Related Tools for PDF Editing
Speed up your publishing workflow with these companion tools from SanishTech:
Merge before watermarking, rotate pages that were scanned sideways, and compress after you are done so email delivery stays smooth.
Pro Tips for Clear, Non-intrusive Text Watermarks
- Use medium gray for long reads. It stays visible but doesn’t shout.
- Diagonal placement at 45° works well across varied page layouts.
- For letterheads or signed pages, pick Below the PDF and lower transparency.
- Test one busy page and one simple page to confirm clarity before running the whole range.
- Mosaic is great for sample packs and slide decks where redistribution is a risk.
- Keep font size consistent across sections so the mark feels intentional.
- Underline sparingly. Bold alone is usually enough for visibility.
- Match color to brand accents if you want a subtle signature look.
FAQ
Does the tool upload my PDF to a server?
No. Everything runs locally in your browser. Your PDF never leaves your device, which means you can watermark confidential contracts and classroom packs without exposure. It is also faster because the tool skips network transfers. When you finish, close the tab to end the session and clear memory on your side.
Can I preview pages before downloading?
Yes. The left side thumbnail grid mirrors your settings. You’ll see where the text lands, the angle you chose, and a sense of contrast. If anything looks off, change transparency, rotation, or position, then click Add watermark again. This short loop helps you dial in a readable, consistent result.
Which font and size should I pick?
Sans-serif fonts like Helvetica read well at modest sizes. For A4 and Letter pages, 28 to 40 px is a practical range. If your page is very dense, aim lower and increase transparency. If the page is image heavy, go a touch larger and keep contrast steady with a mid gray color.
What’s the difference between Over the PDF and Below the PDF?
Over the PDF puts the mark on top of content for strong visibility. Below the PDF places it behind text and images, which feels softer and often suits long reading. For review copies, Below the PDF at 50 percent transparency is a popular balance of presence and comfort.
How do I apply a watermark to only some pages?
Use the from page and to page fields to target a subset. For example, apply the watermark to pages 2 through 12 while leaving the cover and index clean. You can repeat the process for other sections with different text or styles if you need separate labels for appendix or annex pages.
Can I repeat the watermark across the whole page?
Yes. Enable Mosaic to tile the text across the page. This is useful when you share sample data or training decks and want to discourage reuse. Combine Mosaic with lower transparency so body text remains comfortable to read, especially on long policy documents or handbooks.
Will the watermark affect links, bookmarks, or selectable text?
No. The watermark is applied as added text rendering. Your original links, bookmarks, and selectable text remain intact. The tool focuses only on placement, appearance, and range, so your document’s structure and navigation stay unchanged after processing.
What rotation is best for a diagonal mark?
A 45° clockwise angle is a dependable choice. It crosses the reading path enough to be noticed without blocking paragraphs. If you prefer a softer feel, try 30°. For short one-page notices, a vertical placement can work, but test it in the preview grid to confirm legibility.
How do I keep the watermark readable but not distracting?
Use medium gray, keep transparency around 40 to 60 percent, and avoid stacking over dark photos. Place at center or bottom right for consistency. If a page is very busy, select Below the PDF so the text integrates with content rather than fighting it.
Can I combine text and image watermarks?
Yes. Add a text watermark first, download, then run the file through the image watermark tool to place a logo. You can also work in reverse. The key is to keep transparency and size balanced so neither element overwhelms the page. For logos, a subtle gray or brand color works nicely.
Add Text Watermark to PDF Tool keeps your files local, your workflow fast, and your pages tidy. Try the DRAFT example, then tailor font, angle, and transparency for your brand or course. When your mark looks right in the grid, click Add watermark and download. That’s all it takes to ship a professional, protected PDF.