Design Your Stamp
Choose stamp type
Quick text templates (for seals):
Edit color & text
Apply to your document
Happy with the preview on the right? Continue to upload a PDF or image.
Live Preview
Your stamp updates live. Then click Next: Stamp Document.
Step 2: Upload a PDF or image, place your stamp, then export.
Upload Document
Drag & drop or browse
Supports JPG, PNG, and PDF (Max 10MB)
Simple 3-Step Process
How to Stamp a Document Online
Design Your Stamp
Pick a template, customize colors and text, see changes live.
Upload Your Document
Drag & drop a PDF, JPG, or PNG. Files never leave your browser.
Export & Download
Place the stamp, then export the stamped file instantly.
The Best Free Online Stamp Maker — No Upload, No Sign-up
Online Stamp Doc is the world's most private online stamp creator. Unlike other tools, your documents are never uploaded to any server. Everything runs in your browser — design, stamping, and export all happen instantly on your own device.
100% Private
Files never leave your device. Zero server uploads.
10+ Stamp Shapes
Circle, rectangle, oval, diamond, hexagon & more.
PDF & Image Support
Stamp PDF, JPG, and PNG files instantly.
Full Customization
Custom colors, fonts, logos, and distress effects.
Mobile Ready
Works on phones and tablets. Sign with your finger.
Save Presets
Save and reload your stamp designs anytime.
Why Choose Online Stamp Doc?
Most online stamp tools require you to upload your sensitive documents to a remote server — creating serious privacy risks for confidential business files. Online Stamp Doc processes everything locally in your browser, so your invoices, contracts, and confidential documents stay completely private. It's faster, safer, and works even offline once the page is loaded.
Popular Use Cases
- Stamp invoices and receipts as PAID or APPROVED
- Mark legal documents as CONFIDENTIAL or DRAFT
- Add a company seal or business address stamp to letterheads
- Apply a handwritten signature to PDF contracts
- Create RECEIVED or URGENT date stamps for office documents
- Add custom watermarks to protect image files
Frequently Asked Questions
Everything you need to know about stamping documents online — free, private, and instant.
Yes, completely free. No subscription, no credits, no account required. Online Stamp Doc is 100% free to use for unlimited stamps and documents.
Absolutely not. Online Stamp Doc runs entirely inside your browser. Your PDF and image files are processed locally on your device and are never sent to any server. This makes it the most private online stamp tool available.
You can upload PDF, JPG, and PNG documents to stamp. You can also download your custom stamp design as a standalone transparent PNG image to use in other software.
Yes. For multi-page PDFs, you can navigate between pages using the page controls and use the toggle switch to choose which specific pages should receive the stamp.
Online Stamp Doc offers 10 stamp types: Circular seal, Basic Rectangle, Rounded Rectangle, Oval, Diamond, Triangle, Hexagon, Address/Business card, Star/Badge, and Handwritten Signature. Each shape has its own customizable text fields.
Yes! Use the Save / Load Presets section in the stamp designer to save your stamp with a custom name. Presets are stored in your browser's local storage and will be available the next time you visit — no account needed.
Yes, Online Stamp Doc is fully responsive and works on any modern smartphone or tablet. You can even draw a handwritten signature using your finger on touch screens.
Open the Effects & Logo section in the stamp designer and enable Use Custom Center Logo. Then upload a PNG image — ideally with a transparent background — to place it in the center of your stamp.