JPG to AVIF Converter
Based on my tests, AVIF images compress over 80% better than JPGs at the same quality and dimensions. Convert your library without uploading anything to a server.
For website owners, converting JPG photos to a more efficient AVIF format can cut a big chunk of file size on image-heavy sites.
Drop files or a folder here
or click to browse · paste from clipboard
Accepts .JPG, .JPEG · Up to 1,000 files
How it works
Drop your files
Drag and drop, click to browse, or paste from clipboard. Up to 1,000 files at once.
Choose settings
Adjust the image quality, compression effort, max dimensions, etc., depending on your needs.
Click Convert
The JPG converts to AVIF in your browser, so nothing is uploaded.
Download
Download files individually or grab all at once as a ZIP.
What is a JPG file?
JPG (originally JPEG) is one of the oldest and most recognizable image formats in the world. It was created in 1992 by a group called the ‘Joint Photographic Experts Group,’ and today nearly every digital camera, smartphone, and device that shoots photographs (yes, even an iPhone) uses this format.
While this is a widely used format, it’s not the most efficient. During encoding, it throws away tiny bits of detail your eyes likely won’t notice. In technical terms, this is called lossy image compression, which helps keep JPG file sizes smaller than its fellow legacy formats like TIFF or BMP. However, the more you save the same JPG file repeatedly at a lower quality, the blurrier the image gets.
JPG is best for:
- Images of people, landscapes, or things
- Photos you want to send via email, messenger, or any social media platform
- Any file where having a smaller file size matter than sharp/crisp, detailed image
JPG isn’t good for:
- Logos and anything that involves sharp lines or graphics
- Anything that needs a transparent background
- Screenshots that have lots of text
What is an AVIF file?
The AVIF (or AV1 Image File) format is one of the newer, more efficient, smarter image formats developed in 2019 by a group of tech companies called the Alliance for Open Media (think Google, Apple, Netflix, Amazon, etc.)
AVIF was developed to solve the inherent issues with the JPG file format, ensuring photos are small enough to load fast on the internet without compromising image quality, thanks to modern math. The result is an image format that looks as good as a JPG photo, but 50 to 90% smaller with no visible difference.
AVIF is best for:
- High quality photographs at a much smaller file size
- A logo or any image that needs a transparent background
- An image that shows more colors on newer screen technology (HDR)
- Short animation clips (think GIF but with smaller file size)
AVIF isn’t good for:
- Older browsers on older computers, phones, or laptops that use legacy browsers
- Instances where you need to save files quickly (AVIF takes longer to encode)
Why convert a JPG to an AVIF?
The biggest reason to convert an AVIF to JPG is the file size savings. For example, you run a blog or e-commerce store with over 100 product photos. Each JPG file is 500 KB, so that’s 50 megabytes worth of images that your visitors download when they open your site. If you convert those files into an AVIF format, that number can drop down to 50 MB, a 90% savings. Not only will your site load faster, but visitors will be more likely to purchase, improving engagement and signaling to Google to reward your site with better rankings. It saves you money on hosting because you don’t have to pay as much for higher bandwidth. So it’s a cascading effect.
Here’s a simple way to think about it:
- Think of JPG as packing a suitcase using a normal method.
- AVIF is like packing those same clothes but putting them in a vacuum-sealed bag. You pack the same stuff, but there’s more free space.
You’ll have to consider converting JPG to AVIF when:
- You’re building or revamping a website and want faster loading times
- You need to save storage space on your computer hard drive or cloud storage
- You want high-quality photos without the cost of larger file sizes
You wouldn’t want to convert JPG to AVIF when:
- You’re emailing photos using an old phone or computer
- Sending a photograph to a print shop that only accepts JPG files
- You need to open a file using legacy software that doesn’t support AVIF.
Frequently asked questions
AVIF (AV1 Image File Format) is a relatively new image format by the Alliance for Open Media (AOM) that delivers pictures in a much smaller file size at the same image quality as JPG and WebP. For instance, a JPG of medium size would weigh about 1 MB, while AVIF files of the same size are only around 400-600 kB. AVIF supports HDR, wide color gamut, semi-transparent areas, and animations, so it's currently the best image format for photographs on the web.
The default AVIF quality setting is 70, which looks just as good as JPG and is much more efficient. So, in perceptual quality terms, 70-quality AVIF is roughly equivalent to 85-quality JPG. You may start to notice some degradation at very low quality settings (i.e., less than 40), but for web use and the like, AVIF at 70 quality is a great choice. (Originals get archived and edited, and then delivered to the web as AVIF.)
AVIF is supported in Chrome since v85 (August 2020), Firefox since v93 (October 2021), Edge since v121, and in Safari since v16.4 (March 2023). Android and iOS browsers also support it. The only gap is support for older iOS/Safari versions. To serve those users, you can serve AVIF as the preferred format and WebP as a fallback using a
AVIF is better when file size matters and you can wait a bit for encoding. If you push the compression level, AVIF can compress 15-30% better than WebP at the same quality. So it’s particularly suitable for image-intensive websites, product images for online shops, and any situation where bandwidth is a concern. WebP is better when encoding speed is crucial, such as when generating thumbnails on the fly. It also supports older Safari versions, which AVIF doesn’t.
AVIF uses the AV1 video codec for maximum compression efficiency. AVIF encoding is therefore much more compute-intensive than WebP encoding. At an effort of 4 (the default), AVIF encoding is approximately 2-10x slower than WebP for an equivalent image. But lowering the effort slider can reduce the AVIF encoding time at the cost of slightly larger images. AVIF decoding is fast; the main performance impact comes from encoding.
Nope, nothing is uploaded to a server because the conversion is done locally through the browser using WebAssembly. So you can convert product images (for e-commerce store owners) or client shots without any risk of someone taking these photos and using them as their own because nothing goes out of the browser.