JPG, PNG or WebP: which format should you use?
The same picture can be 200 KB as a JPG, 1.5 MB as a PNG and 140 KB as a WebP. The format changes the size, the look and where you can use the file. This guide explains what each format does best, so you can pick the right one in a few seconds.
JPG: the standard for photographs
JPG (also written JPEG) compresses photos by throwing away detail that the eye barely notices. Every program, phone, website and printer understands it, which is why it is the safest choice when you are not sure what the other side accepts.
- Best for: photos and anything with smooth color changes.
- Weak points: no transparency, and text or thin lines can look fuzzy at low quality.
- Quality: lossy. Each re-save loses a little more.
PNG: sharp graphics and transparency
PNG compresses without losing any detail, and it can have transparent areas. That makes it the right format for logos, icons, screenshots, charts and drawings. For photographs it produces very large files, because photos have too many tiny color changes to compress well without loss.
- Best for: logos, interface screenshots, text, pictures that need a transparent background.
- Weak points: large files for photos.
- Quality: lossless. Re-saving does not damage it.
WebP: smaller files for the web
WebP was designed for websites. It can work in lossy mode like JPG or in lossless mode like PNG, and it supports transparency. At similar visual quality, WebP photos are often about a quarter to a third smaller than JPG. All current browsers can show WebP, but some older programs, print shops and upload forms still do not accept it.
- Best for: websites and apps where you control what the viewer uses.
- Weak points: not accepted everywhere, especially by older software and some official portals.
- Quality: lossy or lossless, your choice.
How to choose
- Uploading to a government site, exam portal or job application: JPG, unless it says otherwise.
- Photos for a website or blog: WebP, with JPG as the fallback.
- Logo, icon, screenshot or anything with a transparent background: PNG.
- Sending a photo by email or chat to people you do not know: JPG.
- Printing: JPG or PNG at the highest quality, at the size you will print.
What converting can and cannot do
Changing the format does not improve the picture. Turning a small JPG into a PNG gives you a bigger file with the same detail. Turning a PNG with a transparent background into a JPG fills the transparent areas, which this tool does with white. Turning a JPG into a WebP can make the file smaller, but the first JPG compression has already removed detail that cannot come back.
Frequently asked questions
Is WebP better than JPG?
For file size on websites, usually yes. For compatibility, no: JPG works everywhere. Use WebP when you know it is accepted, and JPG when you are not sure.
Why is my PNG so much bigger than the JPG?
PNG keeps every detail. A photo has millions of small color differences, so a lossless file is large. For photos, JPG or WebP are the right formats.
Can I turn a WebP into a JPG?
Yes. Add the WebP file, choose JPG as the format and download the result. Any transparent areas become white.