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Convert QOI images to PNG for universal compatibility and transparency support.

By ChangeThisFile Team · Last updated: March 2026

Quick Answer

ChangeThisFile converts QOI images to PNG format instantly in your browser using the Canvas API. Your files never leave your device, ensuring complete privacy. QOI offers fast encoding but limited support, while PNG provides universal compatibility across all platforms and devices.

First daily conversion free No signup required Files stay on your device Instant conversion Updated May 2026

QOI vs PNG: Format Comparison

Key differences between the two formats

Feature	QOI	PNG
Browser Support	Limited, requires special libraries	Universal, all browsers and devices
Compression	Fast run-length encoding	DEFLATE with sophisticated filtering
Encoding Speed	20-50x faster than PNG	Moderate, optimized for compatibility
File Size	Often smaller for simple images	Varies with content complexity
Transparency	Full RGBA support	Full alpha channel support
Software Support	Limited to specialized tools	Supported by all image editors
Animation	No animation support	APNG extension available
Best For	Real-time processing pipelines	Web publishing and sharing

When to Convert

Common scenarios where this conversion is useful

Social Media Sharing

Convert QOI screenshots to PNG for uploading to platforms that don't support the newer QOI format but universally accept PNG images.

Image Editor Compatibility

Transform QOI files to PNG before importing into Photoshop, GIMP, or other editors that may not have built-in QOI support.

Web Publishing

Convert QOI images to PNG for embedding in websites, ensuring compatibility across all browsers and devices.

Long-term Archival

Archive QOI images as PNG for future accessibility, ensuring your images remain viewable as software and standards evolve.

Who Uses This Conversion

Tailored guidance for different workflows

Designers

Convert QOI mockups to PNG for sharing with clients who need a universally compatible format
Transform QOI design assets to PNG for embedding in presentations or documents

Check the converted PNG at full zoom to verify no visible artifacts in gradients or fine details

Keep the original QOI as your master copy in case you need to re-export later

Web Developers

Convert QOI images to PNG for optimized loading on websites and web applications
Transform QOI assets to PNG for cross-browser compatibility in production builds

Test the converted PNG file in both Chrome and Safari to ensure consistent rendering

Consider the file size difference between QOI and PNG when optimizing page load speed

Photographers

Convert QOI photos to PNG for uploading to stock photography platforms or portfolios
Batch convert QOI images to PNG for delivering client galleries in a widely supported format

Use the highest quality setting when converting to PNG to preserve fine detail in your photos

Verify color accuracy after conversion, as QOI and PNG may handle color profiles differently

How to Convert QOI to PNG

1

Select QOI file

Drag and drop your QOI image file onto the converter, or click browse to choose from your files.
2

Instant conversion

The browser converts your QOI to PNG locally using the Canvas API. No upload needed and no data leaves your device.
3

Download the PNG

Save your converted PNG file. Ready to use immediately with universal compatibility.

Developers: convert via API →

Frequently Asked Questions

Is the QOI to PNG conversion free?

Yes, completely free with no limits. ChangeThisFile runs entirely in your browser with no server costs.

Are my files uploaded to a server?

No. All conversion happens locally in your browser using the Canvas API. Your files never leave your device.

Does QOI to PNG conversion lose quality?

No, both QOI and PNG are lossless formats. Converting preserves 100% of image quality and transparency.

Why convert QOI to PNG instead of keeping QOI?

PNG has universal compatibility. While QOI is faster to encode, PNG works in all browsers, image editors, and devices without special software.

Can I convert multiple QOI files at once?

Yes, select multiple QOI files and they'll be converted to PNG in parallel, all processed locally in your browser.

Will PNG files be larger than QOI files?

Sometimes. QOI optimizes for speed while PNG optimizes for compression efficiency. File sizes vary depending on image content.

Does this work on mobile devices?

Yes, the converter works on any device with a modern browser, including phones and tablets.

Are there any file size limits?

Only your device's memory limits apply. Most devices can handle QOI files up to several hundred megabytes.

Can I convert PNG back to QOI if needed?

Yes, ChangeThisFile supports PNG to QOI conversion as well. Both directions are lossless.

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Need to convert programmatically?

Use the ChangeThisFile API to convert QOI to PNG in your app or script. Free tier included.

View API & Pricing

Read our guides on file formats and conversion

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