Add Watermark to PDF
Stamp a diagonal text watermark on every page of your PDF. Mark documents as Confidential, Draft, or any custom label — instantly and for free.
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Max 20 MB · .PDF files accepted
How to watermark a PDF online
Upload Your PDF
Drop your PDF into the upload area. Files up to 20MB are supported.
Customise Watermark
Type your watermark text, choose opacity (light, medium, bold) and text size.
Download
Click Add Watermark. Every page gets the diagonal stamp and your file downloads instantly.
Why use TryMyPdf for PDF watermarking?
Diagonal Stamp
Watermark is applied diagonally across every page for maximum visibility and professionalism.
Custom Text
Use any text: DRAFT, CONFIDENTIAL, your company name, or any custom label you need.
Adjustable Opacity
Control how transparent the watermark appears — subtle for drafts, bold for confidential files.
Free & Secure
No account required. All files auto-deleted within 1 hour. Processed over HTTPS.
Frequently Asked Questions
Will the watermark cover my document content?+
The watermark is semi-transparent by default. Adjust the opacity setting to keep underlying text and images fully readable.
Can I remove the watermark after adding it?+
Once embedded in the PDF, the watermark requires specialised editing software to remove. Always keep a copy of the original before watermarking.
Can I use a logo or image as a watermark?+
The tool currently supports text watermarks only. Image-based watermarks require a dedicated PDF editor.
Does the watermark appear on every page?+
Yes. The watermark is applied uniformly to every page in the document in one operation.
What text should I use for different purposes?+
Common choices: DRAFT (work in progress), CONFIDENTIAL (sensitive content), SAMPLE (proof copy), INTERNAL USE ONLY (restricted distribution), or your company name for branding.
Want to protect a PDF before watermarking? Remove restrictions first, or compress the file after watermarking.
What is Watermark PDF?
A PDF watermark is a semi-transparent text stamp overlaid diagonally across every page of a document. It communicates document status, ownership, or confidentiality at a glance — making it immediately clear to any reader that the document is a draft, sample, internal-use-only, or belongs to a specific organisation.
When should you use it?
Add a watermark before distributing draft documents for review, before sharing sensitive reports with external parties, when sending sample copies of paid content, or when branding distributed documents with your company name. Watermarks are standard practice in legal, financial, HR, and educational document workflows.
How Watermark PDF works under the hood
TryMyPdf draws the watermark text at a diagonal 45° angle across each page using pdf-lib's vector graphics layer. The text is rendered at a size proportional to the page dimensions and composited at your chosen opacity level. Because it is embedded as native PDF vector text — not a stamped image — it scales perfectly at any zoom level without pixelation.
Common use cases for Watermark PDF
Draft Review Documents
Mark working documents with DRAFT to prevent recipients from treating unfinished content as the final approved version.
Confidential Reports
Stamp CONFIDENTIAL on internal financial reports, HR documents, or business strategy files before sharing with limited audiences.
Sample or Preview Copies
Add SAMPLE to preview versions of paid content, template packs, or course materials to indicate purchase is required for the clean copy.
Company Branding
Watermark all distributed documents with your company name to reinforce brand identity on every shared page.
Internal Use Only
Mark restricted internal process documents, SOPs, or policy files to clarify they should not be shared outside the organisation.
Client Proofs
Add PROOF or CLIENT REVIEW to design deliverables, photography, or reports sent for approval before final delivery.
Training Materials
Mark training manuals and course PDFs with NOT FOR REDISTRIBUTION to protect intellectual property during distribution.
Version Control
Watermark documents with version identifiers (e.g. v1.2 DRAFT) so recipients always know which iteration they are reviewing.
Tips for best results
Always keep a clean original copy
Watermarks applied with this tool are permanent and require specialised software to remove. Save a backup of the original PDF before watermarking — you will need it if content changes.
Choose opacity carefully
A light opacity (10–20%) makes watermarks discreet but visible. Heavier opacity (40–60%) is better for CONFIDENTIAL or SAMPLE stamps where maximum visibility is the priority.
Use ALL CAPS for maximum impact
All-caps watermark text like DRAFT, CONFIDENTIAL, or SAMPLE is far easier to read at a glance when rotated diagonally across the page at reduced opacity.
Rotate before watermarking
If your document has incorrectly oriented pages, use the Rotate PDF tool first. The diagonal watermark stamp aligns best when all pages share the same consistent portrait or landscape orientation.
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