What PNG to QOI conversion does

Convert a PNG image to QOI (Quite OK Image) directly in your browser. QOI is a simple, fast, lossless image format popular in developer and graphics-programming workflows.

How to convert PNG to QOI

1. Choose a PNG file.
2. Select Convert & download.
3. Save the .qoi file from your browser downloads.

Why use this conversion

QOI’s small, easy-to-implement specification makes it popular in tooling and pipelines that specifically read or write QOI, where fast encode/decode matters more than universal support.

Transparency and output quality

QOI supports a full alpha channel, and this tool preserves it from the source PNG. QOI encoding is always lossless — every pixel from the source PNG is reproduced exactly. Resulting file size is typically comparable to PNG, sometimes smaller for simple graphics and sometimes larger for complex photos.

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: PNG (.png) 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 — it is intended for tooling and pipelines that read QOI directly.
• Metadata is not preserved in the downloaded file.

Related tools

• PNG to AnyConvert PNG images into multiple common output formats.
• PNG to TGAConvert PNG images to TGA for game and texture workflows.
• PNG to PPMConvert PNG images to binary PPM for developer workflows.

PNG to QOI FAQ

What is QOI, and why would I use it?

QOI (Quite OK Image) is a simple, fast, lossless image format popular in developer and graphics-programming workflows for its small, easy-to-implement specification.

Does QOI output keep transparency?

Yes. QOI supports a full alpha channel, and this tool preserves it from the source PNG.

Is QOI conversion lossless?

Yes. QOI is a lossless format — every pixel from the source PNG is reproduced exactly.

Will QOI files open in normal photo software?

Not usually. QOI is a developer-focused format with limited support in mainstream operating systems and browsers — it is intended for tooling and pipelines that read QOI directly.

Are my files uploaded?

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