Convert PNG to ICO Online — Generate Favicons (48px, 32px, 16px)
Generate valid, high-fidelity `.ico` favicons for websites and desktop applications from square PNG logos. Preserves full transparency and scales crisp icons.
When converting PNG to ICO on llmscope.link, your files are decoded and re-encoded entirely within your computer’s browser sandbox via the HTML5 Canvas API and WebAssembly. No image files or telemetry packets are ever uploaded, logged, or retained on any remote server.
| Specification | PNG (Source) | ICO (Target) |
|---|---|---|
| Compression Mechanism | Standard PNG container | Windows Icon resource structure (ICO header + embedded bitmap/PNG) |
| Alpha Transparency | Full alpha channel | Full alpha channel preserved in ICO container |
| Animation Support | Static only | Static only |
| Browser Support | 100% web format | Universal website shortcut icon standard & Windows desktop icons |
| Typical Data Delta | Packaged with multi-resolution icon headers | |
- Website favicon.ico generation
- Google Search result icon eligibility
- Windows desktop shortcut icons
- Browser tab branding
Upload square PNG
Select a high-resolution square PNG logo or icon.
Select icon dimension
Choose 64px, 48px (Google Search standard), 32px, or 16px.
Generate binary
The browser builds the binary ICO header, directory entry, and image stream.
Download favicon.ico
Save your favicon.ico and place it in your website public root directory.
Q:What resolution is best for a website favicon?
Google Search recommends a multiple of 48px square (e.g. 48x48, 96x96). Modern browsers use 32x32 and 16x16 in tabs.
Q:Does the converted ICO support transparent backgrounds?
Yes! The ICO container preserves the PNG alpha channel, ensuring transparent edges around your logo.
Q:Where do I put favicon.ico on my website?
Upload favicon.ico to your web root (e.g. yoursite.com/favicon.ico) and reference it with <link rel="icon" href="/favicon.ico"> in your HTML.