How to generate Chrome extension icons
imglogotool.com Chrome Extension Icon Generator creates all required icon sizes for Chrome extensions (Manifest V3) from a single image. Drop your logo, and get perfectly sized 16×16, 32×32, 48×48, and 128×128 PNG icons — ready to use in your extension's manifest.json. All processing runs in your browser. No files are uploaded.
Drop your icon image into the generator above, click browse, or paste from clipboard. Square images with transparent backgrounds (PNG or SVG) work best.
Choose sizes and shape. All 4 required sizes are selected by default. Pick square, rounded, or circle shape. Optionally set a background color.
Download ZIP. Click "Download all" to get a ZIP with all PNG icons plus a ready-to-use manifest.json icons snippet.
Chrome extension icon sizes — complete guide
| Size | Usage | Required |
|---|---|---|
| 16×16 | Toolbar icon, favicon for extension pages | Yes |
| 32×32 | Toolbar icon on Retina/HiDPI displays | Recommended |
| 48×48 | Extensions management page (chrome://extensions) | Yes |
| 128×128 | Chrome Web Store listing, installation dialog | Yes |
Format: PNG only. Chrome does not support SVG or WebP for extension icons. Transparency is supported.
How to add icons to your Chrome extension
Place the PNG files in your extension directory and add the icons field to your manifest.json. The tool generates the exact snippet you need — use the Copy button above.
Manifest V3 vs V2 icons
Icon requirements are the same for both Manifest V2 and V3. The icons field format is identical. However, Manifest V2 is deprecated — all new extensions must use Manifest V3.
Related tools
Need a website favicon too? The Favicon Generator creates .ico files with browser, Apple, and PWA sizes.
Need to convert your logo from SVG? Use the SVG to PNG Converter — export at any resolution.
Need to convert between formats? The Image Converter batch converts PNG, JPG, WebP, AVIF, and JPEG XL.
PNG icons too large? Use the PNG Compressor — reduce file size up to 80%.
Frequently asked questions
What icon sizes does a Chrome extension need?
Chrome extensions need 16×16 (toolbar), 32×32 (Retina toolbar), 48×48 (extensions page), and 128×128 (Chrome Web Store). This tool generates all four from a single image.
What image format should Chrome extension icons be?
PNG only. Chrome does not support SVG, WebP, or JPEG for extension icons. PNG supports transparency, which is recommended for clean toolbar icons.
Is this Chrome extension icon generator free?
Yes, 100% free. No signup, no watermark, no limits. All processing runs in your browser — your images are never uploaded.
Are my files uploaded to a server?
No. Everything runs locally in your browser using the Canvas API. Your icon never leaves your device.
What is Manifest V3?
Manifest V3 is the current required format for Chrome extensions. It replaced Manifest V2 (deprecated). Icon sizes and format are the same in both versions.
Can I use a transparent background?
Yes. Upload a PNG with transparency — it is preserved in all generated sizes. Transparent backgrounds are recommended for toolbar icons.
Can I use this for Firefox extensions too?
Yes. Firefox uses the same icon sizes (48×48 and 96×96 recommended). Add 96×96 in the sizes selector if targeting Firefox.
What browsers are supported?
Any modern browser: Chrome, Firefox, Safari, Edge, and their mobile versions.