Universal Converter
ImageConvert images between PNG, JPG, WebP, AVIF and more — instantly, in your browser.
Universal Converter changes images between PNG, JPG, WebP and AVIF without a single upload. Pick a target format, set the quality, and the conversion happens on your own device — useful when you need a JPG for a form that rejects HEIC, a PNG with transparency preserved, or a WebP that loads faster on the web. Because nothing is sent anywhere, it's safe for screenshots, contracts and photos you'd rather not hand to a stranger's server.
Why use Universal Converter
100% private
Your image files are processed locally and never uploaded.
Instant
No upload or download wait — it runs at the speed of your device.
Free to start
Use it free every day; go Pro for unlimited runs.
No install
Works in any modern browser. No sign-up to begin.
How to use Universal Converter
- 1Add the image
Drop in a PNG, JPG, WebP, AVIF or HEIC — whatever your camera or the web handed you.
- 2Pick the output format
Choose WebP, JPG, PNG or AVIF. Formats your browser can't encode are hidden rather than failing silently.
- 3Set quality, then download
Dial in quality or aim for a target file size, then save the converted file.
Frequently asked questions
Which image formats can I convert between?
In: PNG, JPG, WebP, AVIF, GIF, BMP and usually HEIC from an iPhone. Out: WebP, JPG, PNG and AVIF. Output formats your browser can't actually encode are hidden rather than offered and then failing — Safari, for instance, is fussier about AVIF than Chrome.
Should I use WebP or AVIF for the web?
AVIF usually produces a smaller file at the same quality, but WebP has broader support in older browsers and encodes faster. If you're unsure, WebP is the safe default; AVIF is worth it when page weight really matters and you can serve a fallback.
Does converting to PNG keep transparency?
Yes — PNG and WebP both preserve an alpha channel, so a transparent background survives the conversion. Converting to JPG does not: JPG has no transparency, so transparent areas are flattened, which is worth knowing before you convert a logo.
Is anything uploaded when I convert?
No. Decoding and re-encoding both happen in your browser, so a contract scan, a screenshot or an unreleased photo is never sent to a server. There's also no file-size cap, unlike most upload-based converters.