PNG to ICO Converter Free
Convert PNG images to ICO favicon files online for free. Generate multi-size ICO files containing 16×16, 32×32, 48×48, and 256×256 pixel variants in a single .ico file. Perfect for website favicons, desktop app icons, and Windows executable icons. No signup required.
Drop your PNG file here
or click to browse — PNG · best square images (64×64+)
PNG · Single file · Recommended: square, min 256×256
1 PNG file selected
ICO Options
No account required · Files deleted in 24h
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Uploading PNG
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ICO File Ready!
Your favicon.ico is ready to download.
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Sizes packed
—
Source size
ICO
Output format
Pro — batch ICO generation, SVG source support, custom size sets, manifest.json
API access · Priority queue · Team workspace
How It Works
Create a professional favicon.ico from your PNG in three steps
Upload Your PNG
Upload your logo or icon as a PNG. For the best ICO results, use a square PNG of at least 256×256 pixels. Transparent backgrounds are fully supported and preserved in the ICO output. Using a high-resolution source ensures all ICO size variants (down to 16×16) are crisp and legible.
Choose ICO Sizes
Select which size variants to bundle into the .ico file. The recommended "All sizes" option creates a multi-resolution ICO containing 16×16, 32×32, 48×48, and 256×256 variants — this covers all browser tab favicons, Windows taskbar icons, and desktop shortcuts. Browsers and Windows automatically use the most appropriate size.
Download favicon.ico
Place the downloaded favicon.ico in your website root directory and add <link rel="icon" href="/favicon.ico"> to your HTML <head>. Modern browsers also accept PNG favicons — for the broadest compatibility including IE11 and Windows Desktop, the .ico format remains the safest choice.
PNG to ICO Features
Professional favicon creation from any PNG image
Multi-Size ICO Files
The ICO format is a container that can hold multiple images at different resolutions. Our converter bundles 16×16, 32×32, 48×48, and 256×256 pixel variants into a single .ico file. Browsers pick the 16×16 or 32×32 variant for tab favicons, Windows picks 32×32 or 48×48 for taskbar icons, and 256×256 is used for high-DPI displays and Windows Explorer large icon view.
Full Transparency Support
Modern ICO format (32-bit RGBA) supports full per-pixel alpha transparency, inherited from your source PNG. Transparent logos, icons on transparent backgrounds, and semi-transparent elements are all preserved in the ICO output. 32-bit ICO is supported by Windows Vista+, all modern browsers, and macOS. Use 8-bit only if you need compatibility with Windows XP.
Universal Browser Support
favicon.ico is supported by every browser ever made — Internet Explorer 4+, Netscape 4+, Firefox, Chrome, Safari, Opera, Edge. While modern browsers also accept PNG or SVG favicons, only .ico works universally including in IE11. Placing a favicon.ico in your site root provides a guaranteed fallback, even without any <link rel="icon"> tag in your HTML.
Instant Generation
ICO generation is fast — the process involves resizing your PNG to each target dimension using high-quality Lanczos resampling, then packing the resized images into the ICO container format. A typical 512×512 PNG is converted to a multi-size ICO in under 2 seconds. No video processing, AV1 encoding, or complex colour space conversions required.
Windows & Web Ready
ICO files serve multiple purposes: website favicons (shown in browser tabs and bookmarks), Windows executable icons (.exe, .dll), Windows Desktop shortcuts, Start menu icons, and File Explorer thumbnails. Our ICO files meet all Microsoft Windows icon specifications — including the 256×256 PNG-compressed frame required for Vista+ compatibility — as well as W3C favicon specifications.
Private & No Account Needed
All uploads are encrypted with TLS 1.3. PNG files and ICO outputs are processed in isolated server containers and permanently deleted within 24 hours. No watermarks are added. No account, email, or signup is required — convert your PNG to ICO favicon immediately without any registration.
Free vs Pro
| Feature | Free | Pro |
|---|---|---|
| Files per batch | 1 | 50 |
| ICO size presets | 4 presets | Custom sizes |
| SVG source support | — | |
| manifest.json generation | — | |
| Apple touch icon export | — | |
| API access | — | |
| Watermark | None | None |
Frequently Asked Questions
Use a square PNG of at least 256×256 pixels. 512×512 or 1024×1024 is ideal as the high-resolution source ensures the downsampled 16×16 and 32×32 variants are crisp. The converter uses Lanczos resampling which produces sharp, anti-aliased results when downscaling. Non-square PNGs are accepted but the image will be letterboxed (padded with transparent space) to create a square ICO.
Upload favicon.ico to your website's root directory (same level as your index.html). Then add this to your HTML <head>: <link rel="icon" type="image/x-icon" href="/favicon.ico">. Browsers will also automatically detect a /favicon.ico file without any <link> tag. For a complete modern favicon setup, also add PNG variants: <link rel="icon" type="image/png" sizes="32x32" href="/favicon-32x32.png"> and <link rel="apple-touch-icon" href="/apple-touch-icon.png">.
Blurriness at 16×16 is common with complex logos that have fine details, thin lines, or small text. At 16×16, there are only 256 pixels to work with — detail inevitably softens. To improve small-size sharpness: simplify your logo (remove fine text, increase stroke widths), use a monogram or symbol rather than the full wordmark, or manually craft a pixel-optimised 16×16 variant. Many brands use different artwork for favicon vs full logo for this reason.
Yes — all modern browsers support PNG favicons via <link rel="icon" type="image/png" href="/favicon.png">. However, IE11 and some older browsers only support .ico. The safest approach is to use both: place a favicon.ico in your root for automatic fallback, and also declare PNG favicons in your <head> for modern browsers. SVG favicons (type="image/svg+xml") are also supported in Chrome, Firefox, and Edge and scale perfectly at any DPI — but not in Safari or IE.
32-bit ICO stores full-colour RGBA images (16 million colours + 256 alpha levels) and is supported by Windows Vista+ and all modern browsers. 8-bit ICO uses an indexed colour palette (maximum 256 colours) and a 1-bit mask for transparency — no semi-transparency. 8-bit ICO is only useful if you need compatibility with Windows XP or very old software. For any modern website or application, always use 32-bit.
Yes. All uploads use TLS 1.3 encryption. Files are processed in isolated containers and permanently deleted within 24 hours. No watermarks added. No account required.