Image Format Converter
Convert an image between JPEG, PNG and WebP and fine-tune the quality for lossy formats, with a live before/after file-size comparison. Converting a large photo to JPEG or WebP at 80-90% quality commonly cuts the file size by 60-90%. Nothing is uploaded — conversion happens entirely on your device via the canvas API.
Frequently asked questions
Which image format should I convert to, JPEG, PNG or WebP?
Use JPEG or WebP for photos where a small amount of quality loss is acceptable in exchange for a much smaller file, and use PNG when you need lossless quality or transparency.
How much smaller will my image get after converting formats?
The reduction depends on the source format and content, but converting a large PNG photo to JPEG or WebP at 80-90% quality commonly cuts the file size by 60-90%.
Why is the quality slider disabled when I select PNG?
The quality slider is disabled for PNG because it’s a lossless format that a quality setting doesn’t apply to; switch the output format to JPEG or WebP to use the slider.
Which image formats does the converter support?
The converter supports JPEG, PNG and WebP in either direction, with an adjustable quality setting for the two lossy formats.
Is my image uploaded when I convert its format?
No image is uploaded — the conversion runs entirely on your device via the canvas API, so the file never leaves your browser.
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