Image Converter

About the Image Converter

Convert any image between JPG, PNG, and WebP — instantly, in your browser. Pick your output format, see the converted file size, and download the new image. No uploads, no sign-up, and nothing leaves your device.

How to use the Image Converter

1. 01Drag and drop your image, or click to choose it from your device.
2. 02Pick the output format: JPG, PNG, or WebP.
3. 03Wait a moment for the converted preview and new file size to appear.
4. 04Click “Download converted image” to save the file in the new format.

Why use our Image Converter

• 01

  Three formats

  Convert freely between JPG, PNG, and WebP — the three formats you actually need.

• 02

  Instant size comparison

  See the original and converted file sizes side by side before downloading.

• 03

  Quality control

  Tune JPG and WebP quality to balance crispness against file size.

• 04

  Private by design

  Conversion runs locally with the Canvas API — your image is never uploaded.

Should you use JPG, PNG or WebP?

JPG uses a discrete cosine transform designed for photographic content, where detail is continuous and slightly noisy. It compresses that superbly and handles hard edges badly, producing ringing and mosquito noise around text and line art. It has no transparency. PNG is lossless and stores every pixel exactly, with a full alpha channel, which makes it correct for logos, screenshots, diagrams, interface captures and anything with sharp edges or transparency — at the cost of large files for photographs. WebP does both: a lossy mode that beats JPG by roughly 25 to 35 percent at equivalent quality, and a lossless mode that typically beats PNG by 20 to 30 percent, with alpha support in both. On the modern web WebP is simply the better choice in almost every case, and the only real reason to avoid it is a destination that cannot read it — some email clients, older desktop software and a few content management systems.

Generation loss and the order you convert in

Every lossy encode discards information permanently, and converting between lossy formats compounds the damage. Going JPG to WebP re-encodes already-degraded data, so artefacts in the source are faithfully preserved and sometimes amplified — which is why you should always convert from the highest-quality version you have rather than from a file that has already been optimised for the web. Converting lossy to lossless does not repair anything: a JPG turned into a PNG contains exactly the same visible artefacts, now stored in a much larger file. The only thing it achieves is stopping further degradation during subsequent edits, which is a legitimate reason to do it before opening an image in an editor. The practical rule is to keep an original master in a lossless format and generate delivery copies from it, rather than converting a delivery copy into another delivery copy.

Transparency, backgrounds and the surprise white box

The single most common unpleasant surprise in format conversion is transparency loss. PNG and WebP both support an alpha channel; JPG does not. Converting a transparent PNG logo to JPG composites it onto a solid background — white here — which produces a visible rectangle the moment the image is placed on anything other than a white page. There is no setting that avoids this, because the format genuinely cannot represent transparency. If your image has a transparent background and you need it smaller, convert to WebP rather than JPG: you get most of the size benefit and keep the alpha channel. When you do need JPG for compatibility reasons and the source is transparent, be aware you are baking in a background colour, and check the result against the actual page or document it will sit on before shipping it.

Choosing an output format

WebP is read by every current browser but not by all email clients or older desktop software.

Frequently asked questions