How to use the Image Converter

Choose or drop one or more images.
Pick the target format and, for JPEG, WebP or AVIF, a quality. Read the notes: they explain what this conversion changes.
Select Convert, then download each file or all of them as a ZIP.

Example

Input

screenshot.png (transparent background)
Convert to: WebP, quality 85

Result

screenshot.webp, still transparent and usually much smaller than the PNG.

The tool lists the exact size of every converted file next to the original.

About this tool

Renaming photo.png to photo.jpg does not convert anything: the data inside is still PNG, and some apps will refuse it. This tool reads the real format from the file’s first bytes, draws the image, and encodes it again with the browser’s own encoder for the format you choose.

Which format? WebP is a good default for websites. JPEG is the safest for email and older software. PNG is for screenshots, logos and anything that must stay pixel-exact. AVIF is often the smallest, but not every app opens it yet.

Known limitations

AVIF can only be saved in browsers that support encoding it. The option is greyed out when yours cannot; WebP is the closest alternative.
Converting to JPEG removes transparency. Transparent areas are filled with the colour you choose.
Converting a JPEG or WebP photo to PNG makes it larger and cannot restore detail already lost to compression.
Animated GIFs become a still image of the first frame. EXIF metadata, including GPS location, is not copied.
HEIC photos can only be opened in browsers that support them, such as Safari.

Frequently asked questions

Are my images uploaded?

No. Decoding and encoding happen in your browser. The converted files are created on your device.

Why is AVIF not available?

Opening AVIF is widely supported, but saving it depends on the browser. When yours cannot save AVIF, the option is disabled rather than silently producing another format.

Will converting reduce quality?

Saving as JPEG, WebP or AVIF is lossy: at quality 85 or above the difference is hard to see. PNG is lossless, so nothing is lost when saving, but nothing is regained either.