Document Authentication Tool

Stamp PDF Online: Add Official Rubber Stamps & Status Seals

Stamp official badges onto PDF pages online free: APPROVED, CONFIDENTIAL, PAID, REJECTED, or create custom dated rubber stamps.

✍️ Author & Developer: Pragesh Kumar Pandey • ⭐ Rating: 4.8 / 5 (512,710 votes) • 🛡️ 100% In-Browser Privacy Verified
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Select or Drop PDF File to Start Using 🖋️ Stamp PDF (Logo / Text)

100% Free & Private — Processed entirely inside your web browser without server uploads

🚀 Open 🖋️ Stamp PDF (Logo / Text)

About 🖋️ Stamp PDF (Logo / Text)

In professional workflows, documents regularly require status markers such as "APPROVED", "CONFIDENTIAL", "DRAFT", "PAID", or official corporate logo seals. Manually printing, stamping with physical ink, and re-scanning documents degrades quality and wastes time.

SmallPDF Pro’s Stamp PDF tool lets you apply ready-made business stamps or upload custom transparent PNG logos directly onto your PDF pages with precision positioning, rotation, and opacity controls.

With 100% client-side WebAssembly execution, your sensitive invoices, approval memos, and trade secrets remain completely secure on your workstation.

Step-by-Step Guide: How to Use 🖋️ Stamp PDF (Logo / Text)

Step 1: Upload Your PDF Document

Drag your PDF into the stamp workspace to open the interactive canvas.

Step 2: Select or Upload Stamp

Choose a preset business stamp (Approved, Paid, Draft) or upload your custom logo PNG.

Step 3: Position, Scale & Adjust Opacity

Drag the stamp to the exact desired page and position, adjust size and transparency.

Step 4: Download Stamped PDF

Click "Apply Stamp" and download your authenticated document ready for delivery.

Key Features & Capabilities

  • 🖋️ Pre-Built Business Presets: Instant one-click stamps for "APPROVED", "PAID", "CONFIDENTIAL", "DRAFT", and "RECEIVED".
  • 🏢 Custom PNG Logo Upload: Upload your company seal or transparent crest with full alpha-channel support.
  • 🎯 Interactive Drag & Drop Canvas: Visually reposition, resize, and rotate stamps on any page with pixel accuracy.
  • 🛡️ 100% Private Client-Side: Confidential executive approvals and contracts are stamped locally on your device.

Who Uses This Tool?

💰 Invoice Payment Approvals: Stamp incoming supplier bills with "APPROVED" or "PAID" before forwarding to accounting.
🔐 Corporate Document Classification: Mark internal memos and trade disclosures with prominent "CONFIDENTIAL" badges.
📐 Engineering & Architectural Review: Stamp blueprints with "REVISED", "PRELIMINARY", or official engineer PE seals.
🏛️ Government & Notary Filings: Affix verified registration stamps, intake dates, or department crests.

Pro Tips & Best Practices

  • Use transparent PNG images for company logos to avoid obscuring underlying contract clauses.
  • If you want to prevent recipients from removing the stamp, run the document through "Flatten PDF Form".

Frequently Asked Questions (FAQ)

Can I apply stamps to all pages at once or just one page?

You can choose to stamp a specific page (like the cover or signature page) or apply it universally across all pages.

Does the stamp support transparent backgrounds?

Yes! Transparent PNG files blend seamlessly without ugly white background rectangles.

Are my confidential documents uploaded to any server?

Never. All document rendering and image stamping happens strictly in your browser memory.

Explore Related PDF Tools

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