Favicon Generator

Build a practical favicon package

Choose a JPG, PNG, or WebP source image and select Generate favicon package. The download includes multiple PNG sizes, a multi-image favicon.ico, a web app manifest, and a small HTML link snippet. Generation runs locally and the files arrive together in a ZIP.

Files included in the package

The ZIP contains 16, 32, and 48-pixel PNG icons for compact browser uses; 180 pixels for Apple touch icons; and 192 and 512 pixels for web app manifests. The ICO combines 16, 32, and 48-pixel PNG images in one container. The included manifest and link snippet reference the generated filenames.

Choosing a good source

Start with a square image, ideally 512 × 512 or larger, with a simple silhouette and room around important details. Transparent PNG is often the most predictable source. Tiny icons cannot show fine text, thin outlines, or complex photographs clearly. Test the 16-pixel version rather than judging only the large preview.

Worked example package

Use a 1024 × 1024 transparent logo mark. The generator resamples it to six square PNGs and places the three smallest into favicon.ico. Upload the extracted files to the site root, customize the blank manifest name fields, and place the supplied link elements in the document head.

How ICO and PNG differ

ICO is a container that can hold several icon sizes so software chooses an appropriate one. Modern browsers also use PNG links and manifest icons directly. Providing both supports established favicon discovery and newer installed-app contexts. A file merely renamed to .ico is not a valid multi-image ICO.

Privacy and local generation

The source is decoded, resized with a locally hosted scaling library, and encoded with a local lossless PNG WebAssembly codec. The ICO and ZIP containers are assembled in browser memory. No source image, icon, or manifest is uploaded. Embedded metadata from the original is generally not retained.

Limitations and assumptions

Input is limited to one static image up to 30 MB and 40 megapixels. Every result is square. A non-square source is center-cropped to its shortest side before resizing, so content near the outer edges can be removed; crop it yourself first when framing matters. The manifest names are intentionally blank and must be customized. The tool does not deploy files, modify HTML, create SVG icons, or guarantee platform-specific maskable safe zones.