Image Format Converter — JPG, PNG, WebP Online, No Upload

Convert images between JPEG, PNG and WebP in your browser

Choose your pictures, pick JPEG, PNG or WebP and convert. Your own browser decodes and re-saves each image, so the pictures are never uploaded. You can add several images at once, set one quality for all of them, compare a converted image with its original and download the results.

What each output format is good for

JPEG suits photographs and has no transparency. PNG is lossless and keeps transparency, so it suits logos, screenshots and graphics with text, but a photograph saved as PNG is usually much larger. WebP keeps transparency too and is saved at the quality you set. Your browser has to be able to encode the format you choose; if it cannot encode WebP the tool says so and suggests JPEG or PNG.

What happens to transparent areas

JPEG cannot store transparency, so when you convert a PNG or WebP with transparent areas to JPEG, those areas are filled with white. There is no background colour option. PNG and WebP outputs keep the transparency.

Quality and file size

Quality runs from 10 to 100 and starts at 85. It applies to JPEG and WebP; PNG has no quality setting because it is lossless. Converting a JPEG to PNG does not bring back detail the JPEG already lost, and it usually makes the file larger, so do it only when you need a lossless or transparent format.

What is not carried over

Each picture is redrawn on a canvas and saved again, so metadata such as camera details and location tags is not copied into the converted file, and an animated GIF becomes a single still image. Photos in HEIC format cannot be opened by most browsers; use the HEIC to JPG converter for those.

Limits

Images are converted one after another. Download all saves the files one by one; there is no ZIP file, and your browser may ask before it saves several files. An image over 100 megapixels is refused, because a phone or laptop could run out of memory. To make a file smaller rather than change its format, use the image compressor.

Frequently asked questions

When should I use PNG, JPEG or WebP?

Use JPEG for photographs where a small file matters and transparency is not needed. Use PNG for logos, screenshots and graphics with text or transparency, where exact pixels matter. Use WebP for pictures on your own website or app, where it is widely supported by modern browsers, but check what an upload form accepts first because some forms reject it.

Can I convert several images at once?

Yes. Add as many images as you like, choose one output format and quality, and convert them in one go. They are converted one after another. Download all saves each file separately; there is no ZIP file, and your browser may ask permission to save several files.

Does converting a JPEG to PNG improve quality?

No. A JPEG has already lost detail, and PNG cannot bring it back. It only stops further loss from future saves, and the PNG is usually a larger file than the JPEG it came from.

What happens to transparency when I convert to JPEG?

JPEG has no transparency, so transparent areas are filled with white. If you need to keep the transparency, convert to PNG or WebP instead.

Are my images uploaded to a server?

No. Your browser decodes and re-saves each image on your own device. The site records an anonymous count that the tool was used, never the pictures themselves.

Is the photo location or camera data kept?

No. The picture is redrawn and saved again, so metadata such as camera model and GPS location is not copied into the converted file. Keep the original if you need that data.

Is there a limit on image size?

An image over 100 megapixels is refused, because the browser could run out of memory; resize it on a desktop first. There is no limit on how many images you add, other than your device's memory. The tool is free, with no account and no watermark.