Text and logo watermarks
Add CONFIDENTIAL, DRAFT, SAMPLE, copyright notices, approval stamps, or brand logos to your PDF pages.
Free Online Tool
Add Watermark to PDF Online
Add text, logo, image, confidential, draft, copyright, sample, paid, or approved watermarks to PDF files. Preview the selected page live and export privately in your browser.
Drag & drop PDF files here. Add text, logo, image, confidential, draft, or copyright watermarks in your browser.
Upload one PDF or add multiple PDFs to apply the same watermark settings as a batch ZIP.
Browser private
Batch support
Text + logo watermark
Preparing your PDF…
Your PDF is being prepared in this browser tab.
Full control over opacity, position, rotation, and page range
Choose exact placement, rotation, transparency, repeated tiles, and which pages should receive the watermark.
Private browser-based PDF editing
Your PDF is processed locally with browser-side libraries. Files stay in your browser memory and are not uploaded.
How it works
Watermark PDFs in 3 steps
Designed for confidential files, draft reports, brand documents, invoices, samples, and protected PDF sharing.
01
Upload PDF
Choose one or multiple PDF files from your device.
02
Add text or logo watermark
Customize text, image, position, opacity, rotation, and page range.
03
Preview and download
Check a live page preview and export the watermarked PDF.
Why use this tool
Protect, label, and brand PDFs without installing software
InstantConvert lets you add confidential labels, draft marks, copyright notices, brand logos, approval stamps, sample marks, and repeated watermarks to PDF files without signing up or opening a desktop PDF editor.
The live preview helps you balance visibility and readability. You can lower opacity for subtle protection, rotate text diagonally, repeat a watermark across the page, or apply watermarks only to selected pages. Batch ZIP export makes it easy to watermark multiple PDFs with the same settings.
SEO Guide
Add Watermark to PDF Online
Use this free tool to add watermark to PDF documents directly in your browser. It supports text watermark, logo watermark, and image watermark modes, so you can label documents as confidential, draft, sample, paid, approved, or copyrighted before sharing them.
A good watermark PDF online tool should give you control over readability. You can adjust opacity, rotation, size, page position, and page range, then preview the selected page before downloading. Repeated watermark mode is useful when you need a diagonal confidential pattern across the page.
Text, logo, and image PDF watermarks
Text watermarks are fast for labels like CONFIDENTIAL or DRAFT, while logo watermarks are better for branding reports, proposals, certificates, and company PDFs. Image watermark mode supports transparent PNG logos, and text plus image mode lets you combine a brand mark with a label.
Everything runs locally with pdf.js for preview and pdf-lib for final PDF editing. Your files are kept in browser memory, and batch export can apply the same watermark settings to several PDFs at once.
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FAQ
Add watermark to PDF: common questions
How do I add a watermark to a PDF online?
Upload a PDF, choose text or image watermark mode, customize opacity, position, rotation, and pages, then preview and download the watermarked PDF.
Can I add a logo watermark to a PDF?
Yes. Switch to Image/Logo Watermark mode and upload a PNG, JPG, JPEG, or WebP logo. Transparent PNG logos keep their transparency.
Can I add a text watermark like CONFIDENTIAL or DRAFT?
Yes. Text Watermark mode includes presets for CONFIDENTIAL, DRAFT, SAMPLE, PAID, APPROVED, and copyright notices.
Can I change opacity and rotation?
Yes. You can set opacity from 5% to 100% and rotate text or logo watermarks from -90° to 90°.
Can I apply watermark only to selected pages?
Yes. Use page range mode with examples like 1-3,5,8-10, or choose first page, last page, odd pages, even pages, or skip first page.
Can I repeat the watermark across the page?
Yes. Turn on repeated watermark mode and adjust horizontal and vertical spacing for a tiled pattern.
Are my PDF files uploaded to a server?
No. This tool uses browser-side PDF libraries, so your PDF stays in your browser memory and is not uploaded.
Can I watermark multiple PDFs at once?
Yes. Add up to 20 PDFs and download all watermarked files in a batch ZIP.
Can I remove the watermark later?
Watermarks are drawn into the PDF pages, so they are not always easy to remove later. Keep a copy of your original PDF before watermarking.
Which watermark type is best: text or image?
Use text for labels like DRAFT or CONFIDENTIAL. Use image/logo mode for brand marks, stamps, and official visual identifiers.