Multiple source images
Only one image is decoded; a concatenated image sequence is not exported as a complete set.
Convert ICO to QOI
- In your browser
- No upload
- Private by design
What happens when you convert ICO to QOI?
Lossless sample storage
QOI preserves 8-bit RGB/RGBA samples losslessly. Reducing 16-bit data or discarding profiles and metadata before encoding is outside that guarantee. QOI can store its supported image samples without lossy compression. This applies after rendering and sample conversion: it does not guarantee preservation of source precision, colour space or document structure, and cannot undo earlier losses.
ICO
Source
ICO
Windows Icon
Compression: Depends on variantTransparency: YesMetadata: Image dimensions, Colour depth
An icon resource containing several raster sizes and colour depths, with masks or alpha for transparency.
Explore ICO format →QOI
Target
QOI
Quite OK Image Format
Compression: LosslessTransparency: YesMetadata: Colour-space flag
A small lossless codec for 8-bit RGB and RGBA images, designed for simple, fast implementations.
Explore QOI format →Is ICO → QOI right for you?
Good choice when
- QOI fits your delivery use: Application assets & simple decoding.
- You can choose the source image or part needed for delivery.
- You need a transparency-capable destination and will check its supported variant.
- You need lossless storage of the rendered samples supported by QOI.
Probably not when
- You require a complete collection, page set or multipart round trip.
- You assume format-level alpha support guarantees matching transparent edges.
- You expect lossless encoding to restore lost details or editing structure.
- You require identical samples without a defined colour and precision policy.
ICO to QOI conversion details
- Multiple source images
- Only one image is decoded; a concatenated image sequence is not exported as a complete set.
- Transparency representation
- The implemented target supports alpha. Display-pixel processing can round translucent samples; archival sample equality is not promised.
- Lossless sample storage
- QOI preserves 8-bit RGB/RGBA samples losslessly. Reducing 16-bit data or discarding profiles and metadata before encoding is outside that guarantee. QOI can store its supported image samples without lossy compression. This applies after rendering and sample conversion: it does not guarantee preservation of source precision, colour space or document structure, and cannot undo earlier losses.
- Sample precision & colour
- Pixel conversion only. Original EXIF, GPS, XMP and ICC profiles are not copied; processing uses 8-bit display pixels.
- Metadata & colour
- Pixel conversion only. Original EXIF, GPS, XMP and ICC profiles are not copied; processing uses 8-bit display pixels.
- Compression
- ICO: Depends on variant → QOI: Lossless ICO: ICO compression depends on the embedded image payload. Multiple sizes are alternatives, not animation frames; transparency handling differs between old masks and alpha-capable images. QOI: QOI preserves 8-bit RGB/RGBA samples losslessly. Reducing 16-bit data or discarding profiles and metadata before encoding is outside that guarantee.
- Transparency
- Transparency is replaced with white by default. Change the background in Advanced options.
- Colour depth
- QOI: 8 bits/sample
- Multiple images
- ICO: Alternative icon sizes
- Dimensions
- Rendered image dimensions are retained within the converter limits; this tool does not offer resizing. Orientation handling depends on the source decoder.
- Metadata
- Pixel conversion only. Original EXIF, GPS, XMP and ICC profiles are not copied; processing uses 8-bit display pixels.
Common questions
Will every source image be exported?
Only one image is decoded; a concatenated image sequence is not exported as a complete set.
Does lossless output mean an unchanged source?
QOI preserves 8-bit RGB/RGBA samples losslessly. Reducing 16-bit data or discarding profiles and metadata before encoding is outside that guarantee. QOI can store its supported image samples without lossy compression. This applies after rendering and sample conversion: it does not guarantee preservation of source precision, colour space or document structure, and cannot undo earlier losses.
Are bit depth and colour values guaranteed to match?
Pixel conversion only. Original EXIF, GPS, XMP and ICC profiles are not copied; processing uses 8-bit display pixels.
Will metadata and colour profiles be retained?
Pixel conversion only. Original EXIF, GPS, XMP and ICC profiles are not copied; processing uses 8-bit display pixels.