Image tool
Convert JPG to AVIF
AVIF is the most efficient image format in wide browser use today. On the test images we benchmark against, it reaches the same measured quality as a JPG at roughly a third of the bytes.
- 100% free
- No signup
- Batch convert
Drop your JPG files here
or click to browse from your device
Supports JPG · Max 50 MB per file · Up to 100 files
You can also paste a copied image with Ctrl+V / ⌘V
Conversion settings
We measure the result against your original and pick the smallest file that still looks the same. No guessing at numbers.
EXIF can contain GPS coordinates and camera serial numbers. Off by default.
- Secure & privateYour files are never shared
- Lightning fastMost images in under a second
- High qualitymozjpeg and libvips under the hood
- Works everywhereAny device, any browser
Input, output and limits
Every figure below is read from the same configuration the server enforces, so this page cannot promise a limit the system will refuse.
- Input formats
- JPGWhat is JPG?
- Output format
- AVIFWhat is AVIF?
- Maximum file size
- 50 MB per file
- Maximum resolution
- 40 megapixels (about 6,325 × 6,325 pixels)
- Batch processing
- Yes — several files at once, downloaded as one ZIP
- Price
- Free, with no account and no watermark
- Processing
- On our server in Singapore (AWS ap-southeast-1), then deleted automatically
- Engine
- Sharp (libvips)
- File retention
- Uploads deleted within 2 hours, results within 24 hours
Settings you can change
Quality
Best quality — visually identical · Balanced — recommended · Smallest file — slight softening
We measure the result against your original and pick the smallest file that still looks the same. No guessing at numbers.
Keep EXIF metadata
Default: off.
EXIF can contain GPS coordinates and camera serial numbers. Off by default.
Output quality
On our own test photograph, at a matched similarity of about 0.99, the same picture came out at 54 KB as JPEG, 66 KB as WebP and 18 KB as AVIF — a third of the JPEG. The gap is wider still on text and flat graphics. The cost is encoding time: roughly a third of a second per attempt, and the adaptive search makes about four attempts.
Privacy and file deletion
- Stored under a random nameUploads have no connection to the file name you sent and are never served from a public directory.
- Deleted on a timerUploads are removed within 2 hours and finished results within 24 hours, whichever comes first.
- Nobody looks at themNo one browses uploads, nothing is shared with third parties, and no file is used to train anything.
- Encrypted in transitEvery request runs over HTTPS, so the file is encrypted between your device and our server.
Common use cases
The hero image on a landing page
The largest image on the page is usually what Largest Contentful Paint measures, so this is where a two-thirds reduction is worth the most.
Image-heavy articles and galleries
Across thirty photos the saving is the difference between a page that loads on mobile data and one that gives up.
Cutting bandwidth on a busy site
The encoding happens once; the saving applies to every visitor from then on.
Troubleshooting
- This takes longer than the other converters
- AVIF uses AV1 compression, which searches a far larger space than a JPEG encoder does. Several seconds for a large image is normal, not a fault.
- The AVIF will not open on my computer
- Browsers read AVIF; desktop photo viewers and older phones frequently do not. Use AVIF for pages you serve yourself and keep a JPG for files you hand to other people.
- A large image was rejected
- The ceiling is 40 megapixels for AVIF, lower than for JPG or PNG, because encoding is so much heavier. Resize first, then convert.
Something else went wrong? Tell us what happened — a person reads every report, and that is how this list gets longer.
Frequently asked questions
Browse image toolsHow much smaller is AVIF really?
On our own benchmark photograph, matched to the same structural similarity score, JPEG needed 54 KB and AVIF needed 18 KB. On flat graphics and screenshots the gap is wider still — those compress down to a few kilobytes.
Will converting an existing JPG give me the full benefit?
Not quite. Your JPG has already thrown detail away, and matching what you gave us means reproducing its compression artefacts too. You will still see a large saving, but encoding AVIF from the original file — a camera raw, a PNG, a design export — gives more.
Can everyone see an AVIF file?
Every current browser can — Chrome, Firefox, Edge and Safari have all supported AVIF for years. Outside the browser it is patchier: some desktop photo apps, older phones and plenty of upload forms still refuse it. Use AVIF for your own web pages, and keep a JPG for anything you have to hand to somebody else.
Why does this take longer than the other converters?
AVIF uses the same compression as AV1 video, and that is genuinely more work than JPEG — several seconds of processing rather than a fraction of one. You are trading a couple of seconds now for a file that is a third of the size every single time somebody loads it.
Do you keep my files?
No. Files are stored on our server only while the conversion runs. Uploads are deleted within 2 hours and finished downloads within 24 hours, whichever comes first. We never open, inspect or share them.
About these formats
- JPGJPG (also written JPEG) is a lossy image format that discards visual detail the eye is least likely to notice, which is why photographs stored as JPG are typically 5–15 times smaller than the same image stored losslessly..
- AVIFAVIF stores a still image using AV1 video compression inside a HEIF container.