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About the Name Stamp Tool

This page generates a personal name stamp so that simple approvals or circulations can be completed online. Even without a physical seal, you can produce a name imprint in your browser and keep consistent formatting during remote work.

Use it for approval sections in request forms or receipt stamps on circulating documents when you just need to show who has reviewed them. By adjusting colors and fonts, you can quickly create imprints that match the style of each department.

Because most processing happens in the browser, your input data is not sent outside the device. Templates and fonts are automatically arranged to produce uniform impressions. Only when you use the signing feature is the necessary information sent to external servers.

Generated seals include a tamper-detection feature but do not guarantee legal validity. For important contracts or governmental procedures, follow organizational rules and use formal electronic signatures when necessary. Handle generated imprints carefully to prevent unauthorized use.

About this app

WebHanko was created to help people accustomed to traditional seals sign documents online as society shifts from paper to digital. It targets freelancers and small teams working remotely, emphasizing simplicity so that no special knowledge is required. The project aims to offer a secure, tamper-evident stamping solution without installing complex software or relying on paid services.

Its main features are as follows:

  • 🖌️ Easily create your own seal
  • 💻 Free to use in your browser
  • 📄 Paste the seal into Word or Excel documents
  • 🔏 Create signed PNG images to detect tampering
  • 🧐 Verify page shows signing information

These features allow anyone to create reliable electronic seals with ease and make everyday paperwork more efficient.

How to use

  • 🔧 Change text in the left form to update the preview
  • 💾 Click Download PNG to save the image
  • 📋 Click the preview to copy the seal
  • 🔐 All processing happens in your browser, and settings are saved automatically

About digital signatures

A digital signature encrypts seal settings and creation time in the image to prevent tampering. Signed PNGs behave like ordinary images and can be verified.

  • 🛡️ Changes after signing are detected during verification
  • 🕒 Records signing time and settings for later reference
  • 🖼️ Use it directly in your documents
  • 🔐 Signing is processed securely on the server and the private key is never exposed
  • ✉️ Including a verified email address proves the creator