CleanorTools
AVIF

JPG to AVIF

AVIF vs WebP vs JPEG: how much smaller, measured

These are our own numbers, from a benchmark of real photographs re-encoded at matched visual quality, not vendor claims. AVIF lands about 37 percent below JPEG across the set, and about 52 percent below it on photographs specifically. WebP sits between the two. The catch is support: AVIF is now broadly supported, but a decade-old device may not decode it.

AVIF is about 37 percent smaller than JPEG at matched quality, and about 52 percent smaller on photographs. WebP is about 25 percent smaller.
File size at matched visual quality, JPEG set to 100. Cleanor Labs benchmark.
AVIF vs JPEGAbout 37 percent smaller at matched quality
AVIF vs JPEG, photosAbout 52 percent smaller
WebP vs JPEGAbout 25 percent smaller
Where AVIF losesSlower to encode, and older devices may not decode it
Where AVIF winsPhotographs, gradients, and anything with soft detail

Source: Cleanor Labs, JPEG vs WebP vs AVIF compression benchmark

Details

How to use JPG to AVIF

What the tool does, how to run it, and what to expect from the result.

How to convert JPG to AVIF

To convert JPG to AVIF, add your JPEG, set the AVIF quality level, check the size comparison, and download the AVIF file. The conversion runs in your browser, so your image stays on your device and there is nothing to install.

AVIF is a modern image format that typically delivers noticeably smaller files than JPG at comparable visual quality. The quality slider lets you find the balance you want, and the size comparison shows exactly how much you are saving before you export.

  • Drop the .jpg file in, or click the dropzone to choose it
  • Pick a quality preset: 82 (Balanced) is the sensible default, 90 for maximum fidelity, 68 for a smaller file
  • Wait for the encode: AVIF is expensive and runs on your CPU, so a large photo takes real seconds
  • Compare the size against the original, then export the AVIF locally

Why convert to AVIF

JPG is still everywhere, but AVIF is often much lighter for the same image, which makes pages load faster and saves bandwidth. For web delivery, switching photos to AVIF is one of the simplest ways to cut image weight.

AVIF is supported by all current major browsers, so it is a practical choice for modern sites. This page keeps that performance-focused conversion direct, so you can move from JPG to a smaller AVIF without a complex toolchain.

Is the JPG to AVIF converter free and private?

Yes. The JPG to AVIF converter is free with no sign-up, no watermark, and no usage limits.

It is private because conversion and export happen locally in your browser. Your JPEG is never uploaded to a server, so it stays on your device.

Tips

Getting a better result out of JPG to AVIF

Specific settings and thresholds, not general advice.

  • This is the conversion with the biggest payoff on the list. Our own format benchmark measured AVIF at 37% smaller than JPEG at matched quality, and our photo-compression study put it as far as 52% smaller on photographs.
  • AVIF encoding is slow, and that is the honest trade. It is doing far more work than a JPEG encoder, in your browser, on your CPU. A large photo takes real seconds.
  • Keep the JPG. AVIF support is excellent in browsers and patchy everywhere else, so the original is still the file you hand to a printer, an older app, or a marketplace that refuses it.
  • Do not convert an already-heavily-compressed JPG and expect miracles. AVIF will faithfully encode the artefacts the JPEG already baked in; the 37% figure is measured at matched quality from clean sources.
  • Serve AVIF with a fallback. The point of the format is a smaller file for browsers that take it, not a single file that works everywhere: that is still what the JPG is for.
Limits

What JPG to AVIF does not do

The honest boundary, so you do not lose time finding it yourself.

  • It does not work everywhere. Browsers are fine; email clients, older software and some marketplaces still refuse AVIF.
  • It does not recover quality the JPG already lost. Lossy-to-lossy conversion can only preserve or degrade.
  • It is slow on large images, because the encoding happens on your CPU rather than on a server.
  • It does not resize or crop.
Reference

Terms used on this page

Short, plain-language definitions for the formats and settings above.

Files & formatsAVIFAVIF (.avif) is a next-generation image format based on the AV1 video codec. It typically produces smaller files than JPEG or WebP at the same quality and supports transparency, HDR, and wide color — making it one of the most space-efficient formats available.GeneralFiles & formatsJPEGJPEG (.jpg) is the most widely supported photo format. It uses lossy compression to shrink photographs dramatically, trading a small amount of detail for much smaller files. It has no transparency and is larger than newer formats like HEIC or WebP at the same quality.General
At a glance

Who JPG to AVIF is for

A quick way to understand who this helps, what it solves, and where it connects next.

Best fit

People optimizing product images, blog assets, UI screenshots, and other still images for lighter web delivery.

Ideal for

Turning a JPG into a more efficient modern still-image format without a server-side pipeline.

FAQ

Common questions

Short answers for the questions people usually have before trying a utility like this.

Does this support JPG only?

Yes. This page is dedicated to JPG and JPEG input so the workflow stays focused on that one format switch to AVIF.

Why is the AVIF file so much smaller?

AVIF uses more modern compression than JPG, so it usually produces much smaller files at similar visual quality, which is great for web delivery.

Does it upload my JPEG to a server?

No. Conversion and export run entirely in your browser, so your image stays on your device.

Is the JPG to AVIF converter free?

Yes. It is completely free with no sign-up, no watermark, and no limit on how many images you convert.

Does it work on mobile?

Yes. The converter works in any modern mobile or desktop browser because all processing happens locally on your device.

How much smaller is AVIF than JPEG?

Our own benchmark measured AVIF at 37% smaller than JPEG at matched quality across the Kodak test suite, and our photo-compression study found savings as high as 52% on photographs. It is the largest single format win currently available on the web.

Why is the conversion so slow?

Because AVIF encoding is genuinely expensive, and it runs on your CPU in the browser rather than on a server. That is the price of nothing being uploaded, and it scales with the size of the image.

Should I delete the original JPG?

No. Browser support for AVIF is excellent, but email clients, older desktop software and some marketplaces still reject it. The JPG is the file you hand to anything outside a browser.

Will AVIF make a bad JPG look better?

No. It will encode the existing artefacts faithfully. The 37% saving is measured at matched quality from clean sources, not as a repair of an already-degraded file.

What about JPEG XL, isn't it better?

Technically it is strong, but our benchmark found it reaches only about 14% of browsers. AVIF is the pragmatic winner precisely because it is both efficient and actually supported.

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