Best for
- Browser favicons
- Windows application icons
- Multi-resolution icon bundles
Strengths
- favicon and icon support
Format hub
ICO file conversions
Browse everything related to ICO in one place, conversions from ICO, conversions into ICO, and the API and workflow paths that support those file flows.
Browse conversions from ICO, convert other file types into ICO, or jump into API and workflow guides for common implementation paths.
About ICO
What is ICO (Icon)?
ICO is a Windows icon file format that can contain multiple resolutions of the same image in a single file. Browsers use ICO files as the classic favicon format.
Context
When to use ICO.
ICO is part of the image conversion surface in Converterer. These pages are useful when you need to balance compatibility, compression, transparency, quality, or workflow-specific image requirements.
Limitations
Maximum dimension is 256×256; modern favicons increasingly use PNG or SVG instead.
Outbound paths
Convert from ICO.
ICO to AVIF
Convert ICO images to AVIF format online for compatibility, compression, quality, and workflow needs.
ICO to BMP
Convert ICO images to BMP format online for compatibility, compression, quality, and workflow needs.
ICO to GIF
Convert ICO images to GIF format online for compatibility, compression, quality, and workflow needs.
ICO to HEIC
Convert ICO images to HEIC format online for compatibility, compression, quality, and workflow needs.
ICO to JPG
Convert ICO images to JPG format online for compatibility, compression, quality, and workflow needs.
ICO to PNG
Convert ICO images to PNG format online for compatibility, compression, quality, and workflow needs.
ICO to PPM
Convert ICO images to PPM format online for compatibility, compression, quality, and workflow needs.
ICO to TGA
Convert ICO images to TGA format online for compatibility, compression, quality, and workflow needs.
ICO to TIFF
Convert ICO images to TIFF format online for compatibility, compression, quality, and workflow needs.
ICO to WebP
Convert ICO images to WebP format online for compatibility, compression, quality, and workflow needs.
Inbound paths
Convert to ICO.
AVIF to ICO
Convert AVIF images to ICO format online for compatibility, compression, quality, and workflow needs.
BMP to ICO
Convert BMP images to ICO format online for compatibility, compression, quality, and workflow needs.
GIF to ICO
Convert GIF images to ICO format online for compatibility, compression, quality, and workflow needs.
HEIC to ICO
Convert HEIC images to ICO format online for compatibility, compression, quality, and workflow needs.
JPG to ICO
Convert JPG images to ICO format online for compatibility, compression, quality, and workflow needs.
PNG to ICO
Convert PNG images to ICO format online for compatibility, compression, quality, and workflow needs.
PPM to ICO
Convert PPM images to ICO format online for compatibility, compression, quality, and workflow needs.
TGA to ICO
Convert TGA images to ICO format online for compatibility, compression, quality, and workflow needs.
TIFF to ICO
Convert TIFF images to ICO format online for compatibility, compression, quality, and workflow needs.
WebP to ICO
Convert WebP images to ICO format online for compatibility, compression, quality, and workflow needs.
Implementation paths
Use the same format hub across product, ops, and no-code.
Developer guides
Use the API docs and language-specific guides when you want ICO conversion inside products, backends, and processing jobs.
Automation workflows
Use Zapier, Make, n8n, Power Automate, or Workato pages when ICO needs to fit into wider no-code or ops workflows.
All tools
Use the all-conversions index to explore every format family and jump between source and target formats quickly.
Related formats