What JPG to QOI conversion does

Convert a JPG, JPEG, or JFIF 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 JPG to QOI

1. Choose a JPG, JPEG, or JFIF 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, even for photos that started as JPG.

Transparency and output quality

JPG has no alpha channel, so QOI output here is fully opaque. QOI encoding is lossless from this point forward, but it cannot recover detail JPEG already discarded during its own compression.

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: JPG, JPEG, or JFIF (.jfif, .jfi, .jif), 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.
• JFIF (.jfif, .jfi, .jif) is accepted alongside .jpg and .jpeg because it is a JPEG-based format.
• Metadata is not preserved in the downloaded file.

Related tools

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

JPG 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 this accept JFIF files?

Yes. JFIF is a JPEG-based format, so .jfif, .jfi, and .jif files are accepted alongside .jpg and .jpeg.

Does converting to QOI restore detail lost by JPEG compression?

No. QOI encoding is lossless from this point forward, but it cannot recover detail JPEG already discarded during its own compression.

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.