DockittDockitt

Convert PNG to ICO Online

Convert PNG images to ICO icon format online — perfect for favicons and app icons.

Processed entirely in your browser — never leaves your device
No software needed — works in any modern browser
Fast — most conversions complete in under a second
Files up to 100MB supported
From
PNGPNG▾
→
To
ICOICO▾
✅Processed entirely in your browser. Your file never leaves your device — no upload, no server, complete privacy.
Drag & drop your PNG file here or

PNG is one of the most common source formats for creating icons. Converting a PNG to ICO is the standard workflow for creating website favicons, Windows application icons, and Windows shortcut icons. This tool resizes your PNG to 256×256 pixels (the standard maximum ICO size) and produces a compatible ICO file directly in your browser. If your source PNG has transparency, it is preserved in the output.

How to use

  1. Click 'Choose PNG' and select the PNG image (ideally a logo or icon on a transparent background).
  2. Click 'Convert to ICO' and wait while the image is resized and processed.
  3. Download the ICO file.

FAQ

What size will the ICO file be?

The output ICO is 256×256 pixels. The source image is scaled to fit within that canvas while preserving its aspect ratio. For non-square images, the result is centred on the canvas. Modern operating systems and browsers display the icon scaled to the appropriate size (16px, 32px, 48px, etc.).

Will transparency in my PNG be preserved?

The ICO file is created from a PNG capture of the canvas. Transparent areas in the source PNG are reflected in the output, which means logos and icons on transparent backgrounds convert cleanly without a white box appearing behind the image.

Can I use this ICO file as a website favicon?

Yes. Place the ICO file in your website's root directory named favicon.ico, or reference it explicitly with: <link rel='icon' href='/favicon.ico'>. For modern browser support, also add a PNG favicon: <link rel='icon' type='image/png' href='/favicon-32x32.png'>.

Should my source PNG be square?

For the best icon results, use a square source image. If the source is not square, the image will be scaled to fit within 256×256 while preserving the aspect ratio, leaving transparent or white space on the shorter edges. A logo or icon designed at 1:1 aspect ratio will produce the cleanest output.

Is this ICO compatible with Windows shortcuts and taskbars?

Yes. The 256×256 ICO format is fully supported by Windows Vista and later for application shortcuts, taskbar icons, and desktop icons. Windows will display the appropriate size automatically. For broader Windows XP compatibility, use a dedicated ICO editor that can embed multiple smaller sizes.

Is the conversion done in my browser or on a server?

The conversion runs entirely in your browser using the Canvas API. Your image is never uploaded to any server.