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Supports: JPG, JPEG, JFIF
ICO is the standard format for website favicons and Windows application icons. JPEG images need to be converted to ICO for:
Every website needs a favicon.ico. It appears in browser tabs, bookmarks, history, and search results. Converting your JPEG logo to ICO ensures universal browser compatibility.
ICO is the native icon format for Windows executables, desktop shortcuts, and file type associations.
Competitors like converttoico.com provides step-by-step favicon instructions: "upload logo, select 16×16, convert, upload to root directory, add <link rel='icon'> to HTML head." ilovefavicon.com recommends "at least 512×512px" source images and "optimizes each size individually for maximum clarity." convertico.com notes that "JPG doesn't support transparency" so users should choose a background color. favicon.io generates ICO plus optimized PNGs for modern browsers.
JPEG and JPG are identical formats — just different file extensions. Both work the same way for ICO conversion. Note that JPEG/JPG doesn't support transparency, so your favicon will have a solid background color.
| Size | Used For |
|---|---|
| 16×16 | Browser tab favicon |
| 32×32 | Bookmarks, Windows taskbar |
| 48×48 | Windows desktop icon |
| 64×64 | High-DPI browser tabs |
| 256×256 | Windows large icon view |
Yes. Completely free with no watermarks, no sign-up required, and no file count limits.
ICO files can contain multiple sizes. Check Advanced Options for multi-size icon generation.
JPEG doesn't support transparency. Use a PNG source image if you need a transparent favicon background.
Yes. Upload multiple JPEG files and convert them all to ICO format.
Yes. Works in any modern browser on all devices — no app installation required.