QOI converter, in your browser.
Convert QOI files to PNG, JPG, WebP and PDF, or turn other files into QOI. Everything on this page is converted in your browser, so your files never leave your device.
Drop QOI files here
or choose from your computer paste with Ctrl V
from Photos or Files
Ready · other file types work too0 bytes uploaded, ever
- No account, no email
- Batch and ZIP download
- Free
Convert QOI to…
Convert to QOI from…
About QOI
QOI is a lossless image format with a specification short enough to read in a few minutes. It compresses far less than PNG but encodes and decodes many times faster, which is why game developers and tool authors like it. Support in everyday apps is thin.
QOI opens in very few apps, and no browser shows it. QOI is lossless and extremely quick to read and write.
- Stands for
- Quite OK Image Format
- Type
- Raster image
- Compression
- Lossless
- Transparency
- Yes
- Animation
- No
- Introduced
- 2021, by Dominic Szablewski
- Opens in
- IrfanView, XnView, many game engines and graphics tools; no browsers or phones
- Best for
- Game textures and pipelines that need very fast encoding
- File extension
- .qoi
- MIME type
- image/x-qoi
Questions
How do I open a QOI file?
QOI opens in: IrfanView, XnView, many game engines and graphics tools; no browsers or phones. If your device or app cannot open it, convert it to PNG or JPG above.
What can I convert QOI to?
ToAny converts QOI to PNG, JPG, WebP and PDF.
What can I convert to QOI?
ToAny creates QOI files from GIF, JPG, PNG, WebP and HEIC.
Are my files uploaded?
No. Every QOI conversion listed here runs inside your browser. The files stay on your device.
Other image formats
- JPGJPG converterThe universal photo format: small files, opens everywhere, no transparency.
- PNGPNG converterLossless images with transparency; best for screenshots, logos and graphics.
- WEBPWebP converterGoogle's web image format: smaller than JPG and PNG, with transparency and animation.
- HEICHEIC converterThe photo format iPhones save by default; half the size of JPG but not opened by many apps.
- AVIFAVIF converterA modern format with the best compression of all; supported by current browsers, few desktop apps.
- GIFGIF converterShort looping animations and simple graphics, limited to 256 colours.
- BMPBMP converterAn uncompressed Windows bitmap: large files, universally readable.
- TIFFTIFF converterA lossless format used in print, scanning and archiving.
- ICOICO converterThe Windows and favicon icon format; holds several sizes in one file.
- SVGSVG converterVector graphics that stay sharp at any size.
- JXLJXL converterJPEG XL: a next-generation format with excellent quality per byte.
- PSDPSD converterAdobe Photoshop's layered project file.
- APNGAPNG converterAnimated images like GIF, with full colour and smooth transparency.
- TGATGA converterThe Truevision Targa format that game engines and 3D tools use for textures.
- PPMPPM converterThe portable pixmap: a plain colour image that Unix tools and research code read and write.
- PGMPGM converterThe portable graymap: a plain greyscale image used by Unix tools and research code.
- PBMPBM converterThe portable bitmap: a plain black-and-white image.
- PAMPAM converterThe portable arbitrary map: the Netpbm format that also carries transparency.
- JP2JP2 converterJPEG 2000: a wavelet-based format used in medical imaging, archives and digital cinema.
- ICNSICNS converterThe macOS app and folder icon format; holds several sizes in one file.
- CURCUR converterThe Windows mouse cursor format: an icon file with a click point.
- ANIANI converterThe Windows animated mouse cursor format; only its first frame can be converted.
- KRAKRA converterThe layered painting file Krita saves; the flattened picture stored inside it is what converts.
- ORAORA converterThe open layered image format used by Krita, GIMP and MyPaint; the flattened picture stored inside it is what converts.
- FFFF converterThe farbfeld format: 16-bit RGBA pixels with a tiny header, used by suckless tools.
- WBMPWBMP converterThe one-bit-per-pixel image format of old WAP phones.