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Send the seal to the server and embed a digital signature. Continue?

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About the Date Stamp Tool

This page lets you quickly create a date stamp for your documents. When moving from paper forms to online templates, it produces today's date with a single click, making it handy for internal confirmations and receipts that need a simple acknowledgment.

It is useful for recording internal inspections or equipment handovers where a formal date entry is required. Your chosen style is saved automatically, so you can reproduce the same format whenever you revisit the tool.

Because most processing occurs in your browser, the entered data is not sent outside your device. Templates and fonts are automatically arranged to produce uniform impressions. Only when using the signing feature is the necessary information transmitted 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 stamps 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 or date 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 (date resets to today each time)

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