DDS to QOI Converter
Processing entirely on your device — large files may take a moment.
QOI is popular with hobbyist engines and emulators; convert to PNG to view it anywhere. If your files are still in DDS format, this page is the shortcut: DDS is the DirectDraw Surface texture format of DirectX game pipelines — uncompressed BGRA variants are the universal fallback that every engine and texture tool imports.
This converter runs entirely in your browser using WebAssembly — your files never leave your device, nothing is uploaded, and there are no watermarks, sign-ups or queues. Drop in several files at once to convert them as a batch.
How to convert DDS to QOI
- 1
Select your files
Drag & drop your DDS files onto the area above, or click to browse. You can add multiple files at once for batch conversion.
- 2
Convert instantly
Click "Convert to QOI". The conversion runs entirely inside your browser using WebAssembly — no upload, no queue, no waiting.
- 3
Download results
Download each converted QOI file individually, or grab everything at once as a ZIP archive.
About the DDS format
DDS is the DirectDraw Surface texture format of DirectX game pipelines. This converter writes the uncompressed 32-bit BGRA variant — the universal fallback every engine's importer accepts before any compressed codec.
Mipmaps and block compression (BC1-7) are not written; the file is a flat full-resolution BGRA image with a classic DX header.
+Strengths
- ✓Universal engine-import fallback
- ✓Lossless, full alpha channel
- ✓No codec negotiation needed
!Limitations
- −No mipmap chain written
- −Uncompressed = large files
- −BC compressed variants not written
About the QOI format
QOI (Quite OK Image, 2021) is a lossless format defined in one short specification document: a stream of simple run-length and delta ops over linear pixels. An encoder fits in 300 lines, decodes faster than PNG, and compresses comparably for photographic content.
It has found a home in emulators, demoscene projects and hobby engines — anywhere people want images without a codec dependency. Viewers rarely support it, so converting QOI to PNG is the way to bring these files into normal tools.
+Strengths
- ✓Radically simple spec (~200 lines)
- ✓Lossless with fast decode
- ✓No patent or licensing questions
!Limitations
- −Almost no viewer support
- −Larger than modern codecs for many images
Why convert DDS to QOI?
Think of it as moving your file to the container that fits the job. No mipmap chain written QOI works differently: Radically simple spec (~200 lines) If any of that sounds like your task, run the conversion — it takes seconds and nothing leaves your device.
Frequently asked questions
Is this DDS to QOI converter really free?
Yes — completely free, with no sign-up, no watermark and no daily conversion limits. The site is supported by advertising.
Are my files uploaded to a server?
No. The conversion runs entirely inside your browser using WebAssembly, so your files never leave your device — that is what makes it instant and private.
Does it work on Windows, Mac, iPhone and Android?
Yes. Anything with a modern browser works: Windows, macOS, Linux, Android and iOS. No software installation is required.
Will I lose quality converting DDS to QOI?
No — QOI is a lossless format, so every pixel of the converted image matches your original DDS file. You can also adjust the quality/size balance before converting when the target format supports compression.
Will transparent areas survive the conversion to QOI?
Transparency is kept whenever QOI actually supports an alpha channel. If the target format has none (like JPG), transparent areas are flattened onto a white background — that is a property of the format, not of this tool.
What happens to EXIF data and other metadata?
Conversions here re-encode the image, and re-encoding generally does not carry the original metadata over. If the EXIF data of your DDS files matters (camera model, GPS, timestamps), keep the original file as the master and treat the converted copy as the shareable version.