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KioTools
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  • Runs locally

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Favicon & App Icon Generator

What is this tool?

A browser-based icon generator. Upload one square image, adjust padding and background, and it renders every size a modern site needs (browser tabs, home-screen icons, PWA manifests) without you exporting each size by hand.

When to use it

  • Setting up favicons for a new website
  • Generating home-screen icons for a Progressive Web App
  • Replacing an outdated favicon.ico with a modern icon set
  • Making sure an icon looks right across browsers, iOS and Android
  • Getting the exact HTML link tags needed without looking them up

How to use it

  1. 1Upload a square source image (the larger and cleaner, the better)
  2. 2Adjust padding, background color and transparency to fit the icon safely inside each size
  3. 3Preview how it looks at a few representative sizes
  4. 4Click Generate to build the full icon set
  5. 5Download the ZIP (all PNG sizes + favicon.ico + HTML snippet) and paste the snippet into your site's head

Frequently asked questions

What image should I start with?

A square image at least 512×512px works best, ideally with the important content centered so it survives being scaled down small.

What's in the ZIP file?

Every standard icon size as PNG, a combined favicon.ico, and an HTML file with the exact link tags to paste into your page's head.

Do I need to add all the sizes manually?

No — the HTML snippet references every generated file, so pasting it in is enough for browsers to pick the size they need.

Is my image uploaded to a server?

No — every size is rendered locally in your browser using the Canvas API.