Browser StudioBrowser Studio

Free tool

Chrome extension icon generator

Upload one image and get every Chrome extension icon size — 16, 32, 48, and 128 px — plus the 440×280 Web Store promo tile. Everything runs in your browser; nothing is uploaded.

Nothing is uploaded — everything runs in your browser.

How it works

One image in, every size out.

  1. 01

    Upload

    Drop in your largest square icon — 512×512 or bigger is ideal.

  2. 02

    Pick a background

    Keep transparency, or set white or black behind the icon.

  3. 03

    Download

    Grab each size and drop them into your icons manifest key.

FAQ

Extension icons, explained.

Chrome uses 16, 32, 48, and 128 px PNG icons (declared under "icons" in your manifest). The 128 px icon is also your Chrome Web Store icon. This tool outputs all of them from one image.

No. All resizing happens in your browser with the Canvas API — your image never leaves your device.

Upload the largest, squarest version you have — ideally 512×512 or bigger. Downscaling stays crisp; upscaling a tiny icon will look soft.

Yes — leave the background on "Transparent" for PNGs with alpha. Choose white or black if your icon needs a solid backdrop.