Image Converter
Runs on your device. Nothing is sent.Everything happens on your own device. Your images are never uploaded anywhere.
Drop images here
Drop images here
or click to choose one or more files
Upload one or more images to convert them
Convert photos between PNG, JPEG, and WebP - adjust quality, compare file sizes before and after, and convert several images at once, entirely in your browser.
This tool re-encodes your images entirely inside your browser using the Canvas API - nothing is ever uploaded anywhere. Drop in one or more photos, choose PNG, JPEG, or WebP as the output format, adjust quality when the format supports it, and download the result individually or all at once. It can also read other formats like GIF, BMP, ICO, and SVG as input, as long as your own browser is able to display them.
Frequently asked questions
Which format should I convert to?
JPEG is the most universally supported format for photos and lets you trade quality for a smaller file. WebP usually produces noticeably smaller files at the same visual quality and also supports adjustable quality, though it's very slightly less supported by very old software. PNG is lossless and the only one of the three with transparency support, but is usually a poor choice for photos - it works best for screenshots, logos, or graphics with large flat areas of color.
What happens to transparency when I convert to JPEG?
JPEG has no way to store transparency, so any transparent areas are filled with white before the image is saved. If you need to keep transparency, convert to PNG or WebP instead.
Can I convert several images at once?
Yes - drop in as many files as you like. They all convert to the same output format and quality, and you can download the results one at a time or all at once with a single click.
Can this tool convert GIFs, BMPs, or icons?
It can read them as input - drop in a GIF, BMP, ICO, or SVG file and convert it to PNG, JPEG, or WebP. An animated GIF is flattened to its first frame only, since a browser's Canvas API has no way to keep the remaining frames.
Why does the converted file sometimes end up larger than the original?
Some formats compress certain kinds of images much better than others - a screenshot or logo with large flat areas of color, for example, is usually far smaller as PNG than as JPEG or WebP. If a conversion comes out larger, try a different output format or lower the quality slider.
Is anything uploaded to a server?
No - decoding, drawing, and re-encoding all happen locally in your browser using the Canvas API. Your files never leave your device, which is also why converting a large batch may take a moment on slower devices.