Image Converter
Convert images between PNG, JPG, WEBP, and more formats.
By Syed Mubashir Ali · Last updated
Which format for which job
Most conversions come down to one of these situations. Pick the row that matches yours and move on.
| Job | Format | Why |
|---|---|---|
| Sharing photos by email or chat | JPG | Opens on everything ever made; quality 80–85 looks identical to the original |
| Website images | WebP | 25–34% smaller than JPG at the same quality, which speeds up pages |
| Screenshots, logos, text | PNG | Lossless, so sharp edges and small text stay crisp |
| Transparent images | PNG or WebP | PNG for pixel-perfect fidelity, WebP when file size matters too |
| Archiving originals | PNG | Lossless means today's conversion doesn't limit tomorrow's edits |
| Cutting-edge web projects | AVIF | Smallest files of the lot, but check browser support first |
Getting smaller files without ugly results
Quality and dimensions are the two levers, and they aren't equal. Dropping the quality slider to 60 on a 4000-pixel photo still leaves you a huge file that looks bad; halving the dimensions to 2000 pixels at quality 80 gives you a small file that looks good. Rule of thumb: shrink the pixels first, then touch the quality. The maximum-size option in the tool does exactly this while you convert, in one pass.
Watch out for the double-conversion trap. JPG is lossy, and every conversion to JPG shaves off a little more detail: converting a JPG to WebP to JPG to JPG ends with a noticeably worse image than the original. When you need several versions, always convert from the original file, not from a file you already converted. And keep the originals. Storage is cheap; reshooting the photo is not.
How to Use Image Converter
- 1Drop your images into the upload area, click to select them, or paste with Ctrl+V. One image or twenty: the tool takes them all in the same queue.
- 2Choose the output format: JPG, PNG, WebP or AVIF. A format your browser can't create is greyed out, so you can't accidentally pick a conversion that won't run.
- 3Set the quality slider (not needed for lossless PNG), pick a fill colour for transparent areas when converting to JPG, and optionally cap the maximum width or height to shrink the files while you convert.
- 4Click 'Convert' and watch the batch run with progress on each file. A file the browser can't read gets reported and skipped: the rest keep going.
- 5Save each file on its own, or grab everything at once as a ZIP. If a conversion ever falls back to a different format, the file gets the matching extension and you're told, so you never end up with a PNG wearing a .webp name.
Frequently Asked Questions
What is the difference between JPG, PNG, WebP and AVIF?
JPG is lossy and best for photos. PNG is lossless and supports transparency, which suits logos and screenshots. WebP is smaller than both for most images and supports transparency. AVIF is smaller still, but only the newest browsers can create it.
Why is a format greyed out?
Conversion happens in your browser, and not every browser can write every format: Safari can't create WebP, and most browsers can't create AVIF yet. The tool checks what yours supports. If a conversion ever falls back to another format, the file gets the matching extension and you're told, so you never get a PNG named .webp.
Does the converter keep transparency?
Yes, when converting to PNG, WebP or AVIF. JPG has no transparency, so transparent areas are filled with the colour you choose (white by default) instead of turning black.
Can I convert many images at once?
Yes. Add as many as you like; they're converted one after another with progress shown, a file that can't be read is reported without stopping the rest, and you can download everything as a ZIP.
What happens to animated GIFs?
Browsers can only convert the first frame, so an animated GIF becomes a still image.
What quality should I pick for JPG and WebP?
Start at 80–85. For JPG that's the sweet spot where files shrink a lot and eyes notice nothing; below 70 you'll start seeing blocky patches in smooth areas like skies. WebP behaves the same way around 80. Going to 95+ mostly just makes bigger files for differences you can't see. If the file still needs to be smaller, resize the image down instead of dropping quality to 50: fewer pixels at decent quality always looks better than many pixels at poor quality.
Does converting to JPG lose quality?
Yes, a little, every time: JPG throws away fine detail to get small files, and it can't put it back. The first conversion from a PNG is fine for anything you'll actually look at. Just don't convert the same file to JPG over and over, because each round eats more detail. Keep the original around and convert from that when you need a new copy.
So when is AVIF actually worth using?
When you control both ends. If you're building a website for a modern audience and your build pipeline handles fallbacks, AVIF's smaller files are a genuine win. If the image will be opened by humans in email clients, old phones, or government upload forms: JPG, almost always. WebP sits in the middle: great for websites, fine on any modern browser.
My image is uploaded to a server somewhere?
No. The conversion uses your browser's own image encoder on your own device, so nothing leaves your computer. There's no queue, no waiting for a server to get around to your files, and it works just as well offline once the page is loaded.
About Image Converter
Someone sends you a photo as a WebP, and your old photo viewer shrugs at it. Or a website's upload form refuses your PNG because it's too heavy. This happens constantly: the internet runs on a dozen image formats and none of them agreed to get along. The Image Converter switches your images between JPG, PNG, WebP and AVIF right in your browser, no installed software and no waiting room.
Everything runs locally with your browser's own image encoder: no uploads and no waiting for a server. Photos are decoded upright, so phone pictures keep their orientation, and you can resize while converting by setting a maximum width or height. Batch runs convert one file after another with progress shown, and a file the browser can't read is reported without stopping the rest.
Format choice is really a three-way trade. WebP is usually the best pick for websites: Google's own tests put lossy WebP 25–34% smaller than JPG, and lossless WebP about 26% smaller than PNG, at the same visual quality, which helps page speed and Core Web Vitals. PNG wins for screenshots, logos and anything with transparency that must stay pixel-perfect. And for photos that need to open everywhere (email clients, old apps, upload forms) JPG remains the safe choice. Convert, shrink, download, done.