Convert Image Format
Convert images between PNG, JPG, and WebP — for smaller files, transparency, or compatibility.
PNG too heavy for your web page? A form that only accepts JPG? Convert between the three web formats with a quality control for the lossy ones. The tool explains transparency handling as it goes, and everything runs in your browser.
Your image never leaves your browser — conversion happens on your device.
How to use this calculator
- Choose the image to convert.
- Pick the output format: PNG, JPG, or WebP.
- For JPG/WebP, set the quality if the default 92% does not suit you.
- Click Convert Image and save the new file.
The formula
Only the extension and encoding change; dimensions are untouched. The new name swaps the last extension: photo.png becomes photo.webp when converting to WebP.
Worked example
Converting photo.png to WebP downloads photo.webp at the same pixel dimensions, typically a fraction of the PNG file size, with the size comparison shown in the confirmation message.
Frequently Asked Questions
Which format should I choose?
JPG for photographs and the smallest general-purpose files. PNG when you need transparency or pixel-perfect graphics like logos and screenshots with text. WebP for websites: usually 25-35% smaller than JPG at the same quality, and it supports transparency too — but a few older apps cannot open it.
What happens to transparency when converting to JPG?
JPG has no alpha channel, so transparent areas would turn black by default. This tool flattens the image onto white first, which is what most people want for product shots and documents.
Does converting JPG to PNG make it higher quality?
No. PNG is lossless, so the conversion preserves exactly what is in the JPG — including its compression artifacts — usually in a much larger file. Converting formats changes the container, not the information.
Can I convert WebP files from the web?
Yes — that is a common use. Save the WebP image, convert it here to JPG or PNG, and apps that reject WebP (older editors, some upload forms) will accept the result.
What quality is used?
The slider defaults to 92% for JPG and WebP, which is visually near-identical to the original for most images. PNG ignores the slider because it is always lossless.