How to use this tool
- Drop in a square logo or image — 512×512 or larger gives the best results.
- Every size is generated instantly: a multi-resolution favicon.ico plus PNGs for browser tabs, iOS home screens, and Android/PWA.
- Download the files you need and put them in your site root.
- Copy the <head> snippet and the site.webmanifest icons block into your project.
Common mistakes to avoid
- Don't start from a small source image. Everything here is scaled down from what you provide, and upscaling a 128px logo to 512px produces a soft, blurry PWA icon — the tool warns you when your source is too small.
- Don't use a detailed logo or one containing words. At 16×16 it becomes an unreadable smudge; simplify to a single bold mark for the small sizes.
- Don't forget the manifest icons. Without them, Android home-screen installs fall back to a generic or badly-cropped icon.
What each file is actually for
A favicon is no longer one file. Browsers, mobile operating systems, and PWA installers each ask for a different size and format, and the ones you can safely skip have changed over the years. The set generated here is the practical minimum that covers current browsers and both mobile platforms: favicon.ico (multi-resolution, for tabs and legacy consumers), 16 and 32px PNGs (tabs, including retina), a 180px apple-touch-icon for iOS home screens, and 192/512px PNGs for Android and the PWA splash screen.
Why the .ico holds several images
ICO is a container rather than an image format — a small directory followed by one or more image payloads, letting the operating system choose the right resolution for the context it is drawing in. Since Windows Vista those payloads may be PNG data directly, which is what this tool writes: your image is rendered to canvas at 16, 32, and 48 pixels, encoded as PNG by the browser, and packaged into a single .ico. The result is one small file that stays sharp in a browser tab, a taskbar, and a desktop shortcut alike.
Frequently asked questions
- Do I still need a favicon.ico file in 2026?
- Yes, though less than you used to. Modern browsers happily use PNG icons declared with <link rel="icon">, but favicon.ico is still fetched from the site root by default when no icon is declared, is what many feed readers, link previewers, and older browsers look for, and costs nothing to include. Keeping it is the safe choice.
- Why does the .ico contain three sizes?
- ICO is a container format that can hold several resolutions in one file, and the operating system picks the closest match for context — 16px in a browser tab, 32px in a taskbar, 48px in a desktop shortcut. Shipping a single 16px icon means everything larger gets an upscaled, blurry version.
- What size should my source image be?
- At least 512×512, square, with any important detail well inside the edges. Everything generated here is scaled down from your source, and downscaling looks good while upscaling does not — starting below 512px means the PWA icon will be soft.
- Why does my favicon look like a smudge at 16 pixels?
- Because 16×16 is roughly the size of a single character of text. Detailed logos, thin strokes, and anything with words in it turn to mush at that scale. A favicon that works is usually a single bold letterform or a simple, high-contrast shape — consider designing a simplified mark specifically for the small sizes rather than shrinking your full logo.
- My new favicon is not showing up. Why?
- Favicons are cached unusually aggressively, often beyond a normal hard refresh. Try loading the icon file URL directly (yoursite.com/favicon.ico) to confirm it deployed, then clear the site data for your domain. It is also worth confirming the files are at the paths your <link> tags actually point to.
How GetByteRush compares
Most free tools for this online work the same way: you upload your file to their server, wait, then download the result — which means your file (and often your email, for a "free" account) sits on someone else's infrastructure. Here's the actual difference:
| Feature | GetByteRush | Typical online favicon generators |
|---|---|---|
| Logo leaves your device | No — rendered in this tab | Yes, uploaded to generate the sizes |
| Multi-resolution .ico | Yes (16/32/48 in one file) | Varies; some emit a single size |
| Ready-to-paste HTML + manifest | Yes | Usually yes |
| Warns when your source is too small | Yes | Rare — most upscale silently |
| Sign-up or email for the download | Never | Sometimes, for the full icon pack |
("Typical online tools" reflects publicly documented behavior of common free file-processing sites as of 2026 — always check a specific competitor's own privacy policy and pricing page, since these details change.)