Watermark PDF Free: 5 Tools to Add Text or Logo (2026)

TL;DR. You can add a watermark text or logo to a PDF for free using 5 tools (iFillPDF, Smallpdf, iLovePDF, PDF24, Sejda) with custom opacity, rotation, position and batch support. Each tool covers a different scenario: legal stamps, branded exports, draft markers, or CLI automation. The best pick depends on whether you need image logos, EU hosting, or scriptable batches.

Why watermark a PDF (legal, branding, draft)

A watermark is a transparent text or image overlay printed on every page of a PDF. You add one to mark documents as Confidential, Draft, Sample, or Paid, or to brand exports with your company logo. The three dominant scenarios are:

• Legal: stamp contracts with "Draft" or "For Review Only" so recipients do not sign the wrong revision.
• Branding: place your logo on quotes, proposals, whitepapers and case studies before sharing externally.
• Leak deterrence: visible recipient name + date watermarks discourage forwarding of sensitive financial or HR documents.

Free tools cover all three, but they differ wildly on opacity control, image vs text-only support, batch processing, and where your file is uploaded. Below are the five we benchmarked.

Method 1 — Online tools (iFillPDF, Smallpdf, iLovePDF, PDF24, Sejda)

The fastest way to watermark a PDF for free is a browser tool — no install, drag and drop, download. We compared five mainstream options on the criteria that matter for production use.

iFillPDF stands out for supporting both text and logo image watermarks on the free tier, with 9 position presets plus custom XY coordinates, full opacity range, and a free rotation angle. Processing happens client-side in your browser with EU hosting in Frankfurt — your file never crosses the Atlantic. There is no signup, no daily quota, and the watermark applies to all pages in one click.

Smallpdf is polished and ranks high on Google Search, but the free tier is text-only and applies a daily limit before pushing you to the $12/month Pro plan. iLovePDF offers image watermarks for free but caps batch processing behind Premium. PDF24 is the German workhorse — generous free tier, image support, but the UI feels dated. Sejda caps at 3 documents per day and 200 pages per file before requiring a paid plan.

Method 2 — Adobe Acrobat Pro Watermark

If you already pay $19.99/month for Acrobat Pro, the built-in watermark is the most thorough. Open your PDF, go to Tools > Edit PDF > Watermark > Add, then enter your text or browse for an image file. Acrobat exposes font, color, rotation in fixed degrees (45°, -45°, custom), opacity slider, position with X/Y offset from any of the 9 anchor points, and page range so you can skip the cover page. You can also save the watermark as a preset and reapply it to future documents in one click — the only free tool that matches this batch reusability is iFillPDF's saved presets.

Acrobat is overkill if watermarking is your only need. For occasional one-off documents, the free online tools above ship the same result in 30 seconds without a subscription.

Method 3 — Mac Preview annotations (basic)

macOS Preview can stamp text on a PDF for free but it is not a true watermark — the text sits as a single annotation on a single page, not as a repeating overlay across every page. To use it: open your PDF in Preview, click Tools > Annotate > Text, type your label, then drag to position and adjust font size and color via the A icon. To replicate across pages, you have to copy the annotation manually onto each page (tedious past 5 pages).

This works for a quick "Draft" mark on a single-page invoice but fails for multi-page contracts, branded reports, or anything requiring controlled opacity. Use the online tools above instead for documents larger than 2 pages.

Method 4 — pdftk + ImageMagick CLI (advanced)

Developers and ops teams who need to watermark hundreds of PDFs nightly should script it. Combine pdftk for stamping with ImageMagick for generating the watermark layer. Generate a transparent PNG with your text, convert to a single-page PDF, then stamp every page of the source:

convert -size 1600x900 xc:none -fill "rgba(180,0,0,0.25)" \
  -pointsize 120 -gravity center -draw "rotate -30 text 0,0 'CONFIDENTIAL'" \
  watermark.png

convert watermark.png watermark.pdf

pdftk source.pdf stamp watermark.pdf output stamped.pdf

Drop this in a cron job or a Vercel cron route and you have a free, scriptable, repeatable watermark pipeline. The trade-off: zero UI, you tune coordinates by hand, and previewing a single tweak takes a full re-render.

How to remove a watermark

Removing a watermark is harder than adding one, and difficulty depends on how the original was applied. If the watermark was added as a true PDF text or image layer (not flattened), most editors can delete it in seconds via Edit PDF > select watermark > Delete, including iFillPDF Edit PDF. If the watermark was flattened into the page raster (common with scanned exports or PDFs printed-then-rescanned), removal requires OCR + image inpainting and rarely produces a clean result.

Note: removing a watermark from a document you do not own or have rights to is likely a copyright violation. Stick to watermarks on your own files (drafts you previously stamped, branded templates you want to repurpose).

FAQ

Can I watermark a PDF without Adobe? Yes. iFillPDF Watermark PDF, Smallpdf, iLovePDF, PDF24 and Sejda all add text or image watermarks for free in your browser, with no Acrobat subscription required.

How do I add a "Draft" or "Confidential" watermark? Open a watermark tool, type the word in the text field, set rotation to -45°, opacity to 25%, position to Center, and apply to all pages. The diagonal placement is the legal-standard convention for draft and confidential markings.

Can I watermark with a logo image? Yes. iFillPDF, iLovePDF, PDF24 and Sejda support PNG and JPG image watermarks on the free tier. Smallpdf restricts image watermarks to its Pro plan. Use a transparent PNG for the cleanest result.

How do I batch watermark multiple PDFs? iFillPDF Watermark PDF and PDF24 process multiple files for free in one session. iLovePDF and Smallpdf gate batch behind Premium. For automated pipelines, use the pdftk + ImageMagick CLI script above.

Free vs paid watermark tools — what is the real difference? Free tools cover 95% of use cases (text + image, opacity, rotation, position, batch). Paid tools (Acrobat Pro, Smallpdf Pro) add reusable presets, page-range targeting, dynamic fields like recipient name + timestamp, and unlimited daily quota. Pay only if you watermark more than 50 documents per week.

Ship branded PDFs in 30 seconds

Add your watermark for free with iFillPDF — text or logo, custom opacity, 9 position presets, all pages in one click. No signup, EU hosting in Frankfurt, your file processed in your browser. Need more? Fill, sign, edit or merge your PDFs in the same session.