A free image converter for JPG, PNG, WebP, AVIF, HEIC and SVG that works in your browser, with a score on every file and nothing uploaded.
5.0(1 rating)Drop any images to convert them to JPG, PNG, WebP or AVIF, with a score on each. It all happens in this browser.
Your images
Settings
For photos. Plays everywhere, no transparency.
No visible change. Each PNG is the smallest file that still scores 90.
Convert
Add an image to compress.
Everything happens in this browser, so your images never leave your computer. PNGs are compressed with libimagequant and OxiPNG, JPGs with Google's JPEGli, and every result is scored with SSIMULACRA 2, the quality metric from Cloudinary and JPEG XL.
This free image converter turns JPG, PNG, WebP, AVIF, HEIC and SVG images into JPG, PNG, WebP or AVIF.
It works in your browser, scores every file against its original, and uploads nothing.
Here's what an image converter does, which format to pick, and what I measured.
What is an image converter?
An image converter saves a picture in another format: the same image, in a file another app or website will take.
Drop any mix of formats, pick the one you need, and convert them all at once, up to 50.
Which format to pick
Each format has its job:
- JPG – for photos that have to open everywhere: email, forms, printers and old apps.
- PNG – for screenshots, logos and anything you'll edit again. It keeps every pixel.
- WebP – for websites. Every current browser shows it, and it's much smaller than PNG or JPG.
- AVIF – for the smallest web images. Every current browser shows it too.
HEIC from an iPhone and SVG logos come in, and go out as any of these four.
What I measured
A few results from my tests, one of each kind:
- Picture
- Dark portrait
- Original
- 271 KB
- This converter
- 224 KB, score 82.9
- Picture
- Mac screenshot
- Original
- 321 KB
- This converter
- 48 KB, score 84.9
- Picture
- Kodak test photo 23
- Original
- 558 KB
- This converter
- 46 KB, score 82.1
- Picture
- Dark portrait
- Original
- 248 KB
- This converter
- 138 KB, score 78
- Picture
- PNG transparency demonstration
- Original
- 24 KB
- This converter
- 256 KB, score 100
Each conversion has its own page with a full comparison against CloudConvert, like HEIC to JPG and PNG to WebP.
How I tested
I tested on September 29, 2026. The files were the same screenshots, graphics and photos behind each conversion's own page.
The score is SSIMULACRA 2, a metric from Cloudinary that compares two pictures the way your eye does:
| Score | What it means |
|---|---|
| 90 and up | Looks identical: no difference even flicking between them at 100% |
| 80 to 90 | Same side by side at 100% |
| 70 to 80 | High quality: hard to notice without comparing |
| 50 to 70 | Medium quality: you can see it up close |
| Under 50 | Visible loss |
Who is the image converter for?
It's for anyone with an image in the wrong format:
- HEIC to JPG – iPhone owners whose photos won't open
- WebP to PNG – anyone saving images from the web to edit
- PNG to SVG – anyone who needs a logo as shapes that scale
- Image compressor – anyone who needs the same format, only smaller
It works in your browser, and the new file leaves out hidden details like the camera and where a photo was taken.
More free image converters
Here are my other free image converters. Each one works in your browser, at full size:
- HEIC to JPG – iPhone photos that open anywhere
- WebP to PNG – every pixel kept, transparency too
- WebP to JPG – WebP images that open anywhere
- PNG to WebP – much smaller images for your site
- JPG to WebP – never bigger than your JPG
- PNG to JPG – photos up to 92% smaller
- JPG to PNG – every pixel kept, ready to edit
- AVIF to JPG – AVIF images that open anywhere
They score every file, and none upload your pictures.
Design and edit your images
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Image Converter FAQs
Questions about the image converter? Here's what to know.
An image converter saves a picture in another format, like HEIC to JPG or PNG to WebP.
This one works in your browser, with a score on every file.
JPG, PNG, WebP, AVIF, HEIC and SVG come in.
They go out as JPG, PNG, WebP or AVIF.
JPG for photos that must open everywhere, PNG for screenshots and editing.
WebP or AVIF for websites.
PNG keeps every pixel, and the others leave out detail your eye barely sees.
The score on each file shows how close it stayed.
Yes, it's free, with no account and no limit on files.
It runs in your browser, so it costs nothing to run.
No, the image converter works in your browser.
Your images never leave your computer.
Yes, drop up to 50 files at once, 50 megapixels each.
Download them one by one, or all together as one ZIP.
I did.
I'm Navid Moazzez, and the image converter is one of my free tools on navid.me.
Read more about me.
Navid Moazzez
AI business strategist & AI OS builder
Navid Moazzez helps creators and founders master AI and build their own AI Operating System (AI OS) to automate their business and life.
Navid.me is reader-supported. When you buy through links on this site, I may earn an affiliate commission. Learn more.
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