Online Seal Generator
Enter a company name, stamp text and anti-counterfeit code to generate a round seal in real time. Supports inner/outer borders, English sub-text, a center star, aging effects, copy, download and shareable links — everything runs locally in your browser.
Everything you need to design a seal
Multiple seal shapes
Round, oval, square, perforated (riding-seam) and watermark seals, all previewed live.
Full text control
Edit main text, bottom text, English sub-text, center content and anti-counterfeit code with adjustable fonts, size, spacing and color.
Borders & center star
Tune inner and outer line width, dividers, and the national-standard golden-ratio five-point star.
Realistic aging
Add ink wear and edge chipping for demos, samples and visual mockups — reproducible via a seed.
Export PNG / SVG
One-click transparent PNG, high-resolution PNG (2–4×) or editable SVG vector — free, with no watermark.
Local & private
All rendering happens in your browser. Share links only contain the parameters you choose to generate.
How it works & what it does
1. What this tool does
It draws customizable seals on an HTML canvas: round company seals, contract / finance / invoice stamps, personal seals, date and serial stamps, and more. You control every text line, font, color, border and effect, then export an image or copy a shareable link.
2. How to use it
Pick a seal template or start from scratch, type your main text, bottom text and optional anti-counterfeit code, then adjust fonts, size, borders and aging in the parameter tabs. The preview updates instantly; copy, download PNG/SVG or save a local template when you're happy.
3. Sizes & standards
Size presets reference the GA 241 round-seal specification, and the anti-counterfeit field validates 18-digit Unified Social Credit codes (GB 32100-2015). Use millimeter + DPI mode for print-accurate output.
4. Privacy & lawful use
Text, rendering and export all stay on your device — nothing is uploaded. Use the tool only for samples, demos, design and lawful purposes; for legally binding seals or e-signatures, use an authorized compliant signing service.
Frequently asked questions
Does this seal generator upload my text?
No. Drawing, preview, copy, download and share-link generation all happen locally in your browser. Share links only contain the configuration parameters you generate.
Can I make contract or business-specific stamps?
Yes. You can edit the main text, bottom text, sub-text, center content and anti-counterfeit code, and combine borders, font size, spacing and colors to build common stamp styles.
Do exported images support transparent backgrounds?
Yes. PNG is exported with a transparent background by default, ideal for documents, images and tables. You can also export an SVG vector.
What is the aging effect for?
Aging makes seal edges look closer to a real stamped impression — useful for presentations, samples and visual mockups. For official e-seals, use a compliant signing system.
Is it free?
Yes, completely free. Copy, PNG / high-resolution PNG / SVG export and batch generation are all available with no account and no watermark.