Image Converter - Free Online Browser Tool

Convert images between JPG, PNG and WebP in your browser, in one batch. Nothing is uploaded.

The web does not agree on one picture format. Some places take anything, some want JPEG and nothing else, some take WebP and pay you for the smaller file, and some still reject anything they cannot identify. Converting between them is the most ordinary thing anyone does to an image. This tool does it on a canvas your browser already has, so the picture never goes anywhere to be converted. Choose the format you need, add one image or a dozen, and each comes back renamed with the extension to match - a single file as a single download, several as one ZIP. You can lower the quality on the way through, or cap the width while you are there. Two details matter more than they sound. A transparent PNG has nowhere to put its transparency once it is a JPEG, so it is flattened onto white first - skip that step and the background comes out black, which is the single most common way a converted image goes wrong. And an animated GIF becomes its first frame, because re-encoding an animation is not something a canvas can do; if the animation is the point, keep the GIF. Nothing is uploaded, watermarked or counted against a quota, because there is no server to do any of that.

This image converter utility runs completely inside your web browser. Your document is opened locally and processed on your own device using JavaScript and WebAssembly, so your file is never uploaded to any server. There is no signup, no watermark and no limit on how many documents you can handle.

  • 100% client-side - files never leave your device
  • Instant processing, no upload wait
  • Works on desktop, tablet and mobile
  • Free forever, no account required

Common next steps: Compress Image, Resize Image, JPG to PDF, PDF to JPG.

How to Use the Image Converter Tool

Four steps, and the whole thing runs locally on your own device.

  1. Choose the format you need

    JPEG for photographs, PNG for flat art and text, WebP for the smallest file where it is supported. The quality control applies to the first and last; PNG is lossless and ignores it.

  2. Add your images

    One file or many. Several come back in a single ZIP, and a single file comes back on its own, because there is no reason to make you open an archive to get one picture.

  3. Cap the size if you need to

    Turning on a width limit while converting resizes on the way through, which saves a second round trip when the file has to fit somewhere that cares about its dimensions.

  4. Download

    Every file is renamed to the format you asked for, with the extension to match, so nothing is left called image.png when it is a JPEG.

Frequently Asked Questions

Why did the background of my PNG go black?

Because JPEG cannot store transparency, and a converter that ignores this fills those pixels with black. These tools flatten onto white instead, which is what the image looked like before it was saved with transparency. If you need the transparency kept, convert to WebP or stay in PNG.

What happened to my animated GIF?

It became its first frame. Re-encoding an animation is beyond what a browser canvas does - it holds one picture at a time - so only the first frame survives. Anything else would mean shipping an animation library in, which this site does not do.

Which format gives the smallest file?

WebP, usually by a wide margin, at a quality where a JPEG would already be showing artefacts around edges. Its catch is support: anything old enough not to know WebP will simply refuse it. For a photograph that has to open anywhere, JPEG remains the safe answer.

Is the conversion lossless?

Converting between formats at high quality is very nearly so. JPEG and WebP are lossy by nature, so lowering their quality discards detail on purpose - the control is there so that the trade is yours rather than the converter's.

Are my images uploaded anywhere?

No. Each file is decoded, redrawn and re-encoded inside this tab, and the download is produced by your own device. That matters when the images are photographs you would rather not hand to a stranger's server.