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Privacy-focused professional local toolkit. Process images, PDFs, and seals instantly in your browser.

Round Electronic Seal Generator

Type the main text and bottom text to see the seal update live. Choose between KaiTi, SongTi, HeiTi and FangSong fonts, tune the size, letter spacing, tall/narrow ratio, outer ring width and vintage level, and place a star, heart, dot or custom text in the centre before exporting a transparent PNG.

Quick Seal Generator

Instructions

  • Enter main text and bottom text to preview the seal in real time.
  • Adjust font, size, spacing, stroke width, and vintage level.
  • After confirmation, download the final transparent PNG file.

Templates generated by this tool are for learning and reference only. Do not use for illegal purposes. You are solely responsible for any consequences.

Key features

  • Fully customisable main text, bottom text, centre icon and centre text
  • Adjustable font, size, spacing, stroke width and vintage level with live preview
  • Exports a transparent PNG ready to overlay on PDFs or images

How to use

  1. Enter the main text and the bottom text
  2. Choose a font and the centre icon style
  3. Tune size, spacing, stroke width and vintage level
  4. Confirm the preview and download the transparent PNG

FAQ

Do the generated seals carry legal validity?

No. This tool produces graphical templates for learning, design reference and internal demos only. Do not use them for any unlawful purpose — you are solely responsible for the consequences.

Is the exported PNG transparent?

Yes. The export is a transparent PNG, so it overlays documents and images without hiding the content underneath.

How do I stamp the seal onto a PDF?

Download the seal PNG here, then open the watermark tool and upload it as the watermark asset to stamp every page of your PDF.

Privacy First: Files are processed locally in your browser and never uploaded to our servers, keeping your data 100% private.

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