Every image format exists for a reason, and picking the right one, or converting to it, can make a photo load faster, look sharper, or shrink to a fraction of its size. You can convert images between PNG, JPG, WebP and AVIF for free, and below we cover what each format is best at. Nothing you upload leaves your device.
The four formats at a glance
| Format | Best for | Transparency | Size |
|---|---|---|---|
| JPG | Photos, sharing | No | Small |
| PNG | Graphics, text, transparency | Yes | Large |
| WebP | Websites (modern) | Yes | Very small |
| AVIF | Websites (newest) | Yes | Smallest |
Which format should I convert to?
- PNG → JPG: when you want a smaller file for a photo and don't need transparency.
- JPG → PNG: when you need transparency or lossless quality for editing.
- Anything → WebP: for a website, to cut file size while keeping quality.
- Anything → AVIF: for the absolute smallest modern web images (check browser support).
How to convert an image (step by step)
- Open the Image Converter and add your files, one or many.
- Choose the output format: PNG, JPG, WebP or AVIF.
- Set the quality for JPG, WebP or AVIF to balance sharpness and size.
- Convert and download each result.
Keeping quality high
- Don't re-save JPGs repeatedly, each save loses a little detail. Convert from the original when you can.
- Use PNG for screenshots and text so edges stay crisp.
- Batch convert a whole folder at once to save time.
Once converted, you might also want to compress or resize the result for its final home.
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Open the Image Converter tool →Frequently asked questions
How do I convert PNG to JPG for free?
Add your PNG above, choose JPG as the output format, set the quality and click Convert. A Download button appears for the new JPG, no sign-up needed.
What is the difference between WebP and AVIF?
Both are modern formats that make images much smaller than JPG or PNG. AVIF usually compresses best; WebP has slightly wider browser support. Both are great for websites.
Can I convert several images at once?
Yes. Add multiple files and PixOtter converts them all in one go, each with its own download.
Are my images uploaded to a server?
No. All conversion runs locally in your browser, so your images stay completely private.