What TIFF variants does this support?

The tool uses UTIF.js which handles a wide range of TIFF files including uncompressed, LZW-compressed, and PackBits-compressed TIFFs. Very large files or exotic TIFF sub-formats may not decode correctly — keep source files under 20 MB for best results.

Which sizes are included in the output ICO?

Four standard sizes are packed into the file: 16x16, 32x32, 48x48, and 64x64 pixels — the most widely supported icon dimensions.

Is my image uploaded to a server?

No. The entire conversion happens inside your browser using the File API and Canvas API. Your image never leaves your device.

What color depth does the output ICO use?

The tool generates 32-bit RGBA bitmaps, which support full color and transparency (alpha channel).

Can I use the output as a favicon.ico?

Yes. Rename the downloaded file to favicon.ico and place it in your web root. All modern browsers and web servers recognize multi-resolution ICO files.

What if my TIFF has multiple pages?

Only the first page (frame) of a multi-page TIFF is used for the conversion. If you need a specific page, export that page as a single-page TIFF first.

TIFF to ICO Converter

Upload a TIFF image and download a multi-size .ico file (16, 32, 48, 64 px) instantly — no server, no account needed.

Upload TIFF

Click to choose a TIFF file or drag and drop here (.tiff / .tif)

Upload a TIFF to see icon previews here

Summary

TIFF to ICO Converter is a free, browser-based tool that reads any TIFF or TIF file you upload, decodes it using UTIF.js, renders it onto hidden canvases at four standard icon resolutions, and assembles the raw pixel data into a valid .ico binary. The resulting file can be used as a Windows application icon, website favicon, or anywhere ICO format is required. All processing happens locally — your image never leaves your device.

How it works

Click "Choose TIFF File" and select any .tiff or .tif image from your device.
UTIF.js decodes the TIFF data in your browser, including multi-page and compressed TIFFs.
The decoded image is rendered onto four Canvas elements at 16x16, 32x32, 48x48, and 64x64 pixels.
Each canvas is read as raw RGBA pixel data and encoded as a 32-bit DIB bitmap.
A valid ICO binary is assembled in memory with all four sizes and offered as an instant download.

Use cases

Create a multi-resolution favicon.ico from a TIFF logo or scanned artwork.
Package a TIFF graphic as a Windows desktop or taskbar icon.
Convert a TIFF to ICO for use in Electron or desktop application projects.
Produce a quick icon asset from high-resolution TIFF source files.
Generate multiple icon sizes from a single source TIFF in one step.
Prepare icons for browser extension manifests that require .ico format.
Convert scanned documents or photos in TIFF format into icon assets.

Frequently Asked Questions

Last updated: 2026-06-11 · Reviewed by Nham Vu