Add Stamps to PDF
Stamp PDFs with APPROVED, DRAFT, CONFIDENTIAL, custom text or image stamps. 20+ presets. Free, no signup.
Key Features
- 10 built-in stamp presets: CONFIDENTIAL, DRAFT, APPROVED, VOID, RECEIVED, COPY, ORIGINAL, PAID, REVIEW, REJECTED
- Custom text stamps — type any text including Unicode/international characters
- Rotation from 0° to 45° in 5° increments (diagonal stamps for maximum coverage)
- Opacity control from 5% (ghost) to 100% (solid opaque)
- Color picker — red, blue, grey, black, or custom hex
- Font size from 12pt to 96pt
- Placement presets: center, diagonal-full, top-right corner, bottom-center
- Apply to all pages, odd/even only, or a custom page range
About PDF Stamp
PDF Stamp adds customizable rubber-stamp overlays to PDF pages — CONFIDENTIAL, DRAFT, APPROVED, RECEIVED, or any custom text — rendered as real PDF text at precise rotation, opacity, and position. Unlike image-based watermarks, PDF stamps are embedded as PDFName text objects with a chosen color (red, blue, grey, black, or custom hex), font size, and rotation angle, so they render crisply at any print resolution. All stamping runs in your browser via pdf-lib. Upload a PDF, choose a stamp preset or type custom text, set opacity (light ghost to solid), rotation (0°–45°), position (center, diagonal across page, top-right corner), and apply to all pages or a selected range. The stamped PDF downloads immediately with no server round-trip.
Image-based stamp tools create pixelated overlays that look blurry when printed. This tool embeds stamps as real PDF text — crisp at any DPI, selectable, and optionally removable by future tools. The diagonal tiling option covers every quadrant of a page to prevent cropping the stamp out. Custom text supports any Unicode character, so stamps work in any language.
Who Uses This Tool
- Stamping contract drafts DRAFT before sending to clients for review
- Marking sensitive financial documents CONFIDENTIAL before emailing to external parties
- Stamping invoices PAID after processing for clean audit trails
- Adding VOID stamps to superseded document versions in compliance workflows
- Stamping submitted forms RECEIVED with a date in administrative workflows
- Marking document copies COPY to distinguish from originals in legal proceedings
How to Use Add Stamps to PDF
- Step 1: Upload your PDF or drag it into the tool
- Step 2: Choose a stamp preset or type your own custom text
- Step 3: Set color, font size, rotation, opacity, and placement
- Step 4: Select page range (all pages or specific pages)
- Step 5: Click "Apply Stamp" and download the stamped PDF
Frequently Asked Questions
Is the stamp permanent or removable?
Stamps are embedded into the PDF content stream, which makes them permanent for most viewers. Specialized PDF editing tools can still remove them, so stamps are a visual deterrent but not a security mechanism.
Can I stamp only certain pages?
Yes — use the page range input to stamp specific pages (e.g., "1, 3-5, 10-last").
Does the stamp affect the underlying text?
No — the stamp is added as a separate content layer on top. Existing text, images, and form fields are untouched.
Can I add multiple stamps to the same PDF?
Yes — apply one stamp, download, then re-upload to apply a second stamp. Future versions will support stacking stamps in one pass.