Add a diagonal text watermark to every page of your PDF. Processed entirely in your browser — nothing is uploaded.
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One PDF file · Max 40 MB · for higher limits
Watermark PDF stamps a custom diagonal text watermark on every page of your PDF document. Use it to mark documents as CONFIDENTIAL, DRAFT, SAMPLE, or any text you choose. It's ideal for protecting intellectual property, branding shared documents, or visually indicating a document's status. The watermark's color, size, opacity, and angle are all fully customizable.
Upload your PDF, type your watermark text, then adjust the font size, opacity (how transparent it appears), rotation angle, and color using the controls. A live preview shows how the watermark will look before you apply it. When ready, click "Add Watermark & Download" — the tool uses pdf-lib in your browser to draw the text on every page and downloads the result instantly.
Upload your PDF
Drop your PDF onto the upload zone or click to browse. The file is read locally in your browser.
Enter watermark text
Type the text you want to stamp on each page — such as "CONFIDENTIAL", "DRAFT", or your company name.
Customize appearance
Adjust font size, color, opacity, and rotation angle to achieve the look you need. A live preview updates instantly.
Choose position
Select center diagonal, top-left corner, or another position for the watermark placement.
Download
Click "Apply Watermark" to generate and download the watermarked PDF. No uploads, no waiting.
Confidential Documents
Stamp CONFIDENTIAL on internal reports, financial statements, and HR documents before sharing externally.
Draft Review Copies
Mark proposals, contracts, and reports as DRAFT so recipients know not to treat them as final documents.
Brand Protection
Add your company name or logo text to PDFs before distributing to clients to prevent unauthorised redistribution.
Educational Materials
Mark course materials, exam papers, and handouts as SAMPLE or COPYRIGHT PROTECTED before distribution.
Legal & Compliance
Indicate document status — DRAFT, FINAL, APPROVED — on legal filings, contracts, and regulatory submissions.
Portfolio Protection
Add a subtle watermark with your name or website to PDF portfolios before sending to clients or posting online.
Full Visual Customization
Control watermark text, font size, color, opacity, and rotation angle — tailor it exactly to your document's needs.
Live Preview
See how the watermark looks on your actual document before downloading — adjust until it's right.
Applied to Every Page
The watermark is automatically stamped on all pages of the PDF in a single click.
100% Private — No Uploads
pdf-lib runs the entire operation in your browser. Your document never leaves your device.
Five Preset Colors + Custom Picker
Quickly choose gray, red, blue, green, or black — or open the color picker for any custom hex color.
Free to Start — Sign Up for More
Use free with no account for files up to 40 MB. Sign up free to raise your limit to 80 MB, or upgrade to Pro for 250 MB per file.
Also Known As
Merge PDF
Combine multiple PDF files into one. Drag to set the page order you want.
Split PDF
Separate one PDF into multiple files — by page range or every page.
Compress PDF
Reduce PDF file size while keeping the best possible quality.
Remove Pages
Select and delete specific pages from your PDF document.
Extract Pages
Extract selected pages from a PDF and save them as a new PDF file.
Organize PDF
Reorder, rotate and delete pages inside a PDF — all in one place.
Trusted Worldwide
iLoveDocsTools is used by students, professionals, and businesses across the United States, Canada, United Kingdom, Australia, India, and more than 100 other countries. All tools are browser-based and process files privately — your files never leave your device. Free to use, with Pro plans for unlimited access.
All processing happens directly in your browser. Your documents are never sent to any server — complete privacy guaranteed for users in the USA, Canada, UK, and worldwide.
Every tool on iLoveDocsTools is free to use. Need more? Upgrade to Pro for unlimited usage, priority access, and no daily limits. Trusted by students, freelancers, and teams across North America and Europe.
Whether you are on a Mac, Windows PC, iPhone, or Android in New York, Toronto, London, or Sydney — our tools work instantly in any modern browser.
Looking for free PDF tools in the USA? Free document converters in Canada? Online PDF editors in the UK or Australia? iLoveDocsTools offers 70+ free tools — merge PDF, split PDF, compress PDF, convert Word to PDF, Excel to PDF, JPG to PDF, and many more — all free, all instant, all private. No watermarks. No file size limits. Just free tools that work.