Why convert WebP to QOI?

QOI's tiny, easy-to-implement spec makes it popular in developer and graphics-programming tools that read or write QOI directly and want very fast, simple encode/decode — not because QOI beats WebP on compression or features.

Is QOI output lossless?

Yes, always. Every pixel from the decoded WebP source is reproduced exactly in the QOI file — if the WebP itself was lossy, that loss already happened at the WebP encoding step, but nothing further is lost here.

What happens if my source WebP is animated?

Only the first frame is converted. QOI has no animation support of its own, so the rest of an animated WebP source is discarded.

Are my files uploaded?

No. Conversion runs locally in your browser and does not upload your file to Looty Tools servers.

What is validated before conversion?

The file must actually be a WebP — the tool checks the RIFF/WEBP signature bytes, not just the filename or extension, before decoding.

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WebP to QOI Converter

Convert WebP images to QOI (Quite OK Image), a fast, lossless, developer-focused format, directly in your browser.

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WebP to QOI processes files locally in your browser.

What WebP to QOI conversion does

Convert a WebP image to QOI (Quite OK Image) directly in your browser. Both formats can be fully lossless with alpha, so a lossless WebP source converts to QOI with no additional quality loss — this is mainly a change of container for tooling that specifically reads QOI, not a quality tradeoff.

How to convert WebP to QOI

Choose a WebP file.
Select Convert & download.
Save the .qoi file from your browser downloads.

Why use this conversion

QOI's small, easy-to-implement specification makes it popular in developer and graphics-programming tooling that reads or writes QOI directly and prizes very fast, simple encode/decode over broad software compatibility.

Transparency and output quality

QOI supports a full alpha channel just like WebP does, and this tool preserves it from the source exactly — no flattening or format-driven transparency loss happens in this conversion. QOI encoding is always lossless — every pixel from the decoded WebP is reproduced exactly. If the source WebP itself used lossy compression, that loss already happened at the WebP encoding step; QOI just doesn't add any further loss. Resulting file size is typically comparable to PNG, which can be larger than a well-compressed lossy WebP.

Privacy and local processing

Processing occurs locally in the browser.
Files are not uploaded to Looty Tools for conversion.
Converted files remain on your device.

Limits and known issues

Input: WebP (.webp) only, up to 25.0 MB and 8,192 px per side.
QOI is a developer-focused format with limited support in mainstream operating systems and browsers — plan on it being read by tooling that supports QOI directly, not by a typical photo viewer.
If the source WebP is animated, only its first frame is converted to QOI, which has no animation support of its own.
Metadata is not preserved in the downloaded file.

Related tools

Guides

WebP to QOI FAQ

Why convert WebP to QOI?: QOI's tiny, easy-to-implement spec makes it popular in developer and graphics-programming tools that read or write QOI directly and want very fast, simple encode/decode — not because QOI beats WebP on compression or features.
Is QOI output lossless?: Yes, always. Every pixel from the decoded WebP source is reproduced exactly in the QOI file — if the WebP itself was lossy, that loss already happened at the WebP encoding step, but nothing further is lost here.
Does QOI output keep transparency?: Yes. QOI supports a full alpha channel just like WebP does, and this tool preserves it from the source without flattening.
What happens if my source WebP is animated?: Only the first frame is converted. QOI has no animation support of its own, so the rest of an animated WebP source is discarded.
Are my files uploaded?: No. Conversion runs locally in your browser and does not upload your file to Looty Tools servers.
What is validated before conversion?: The file must actually be a WebP — the tool checks the RIFF/WEBP signature bytes, not just the filename or extension, before decoding.