JPG to AVIF Converter
Convert JPG images to modern AVIF for the smallest file sizes - runs entirely in your browser.
Drag, drop, paste, or browse
JPG, PNG, WEBP, GIF, AVIF, HEIC, TIFF, RAW, and SVG up to 25 MB. Paste from clipboard with Ctrl+V.
Settings
Tune output without leaving the browser.
Before / after preview
Compare the source image with the generated file.
Result download
Your processed image will appear here.
Useful to know
Privacy and processing
AVIF encoding runs in your browser via a small WebAssembly encoder (~300KB) that's downloaded once and cached for offline use. Your file never uploads to a server.
JPG to AVIF online with ImgShifter
JPG to AVIF is the endgame of image optimization in 2026: the same photo at the same visual quality in roughly half the bytes. For an image-heavy site that's not a rounding error - it's the difference between passing and failing Core Web Vitals on slower connections, achieved without touching a single layout or line of code beyond the image files themselves.
Encoding AVIF in a browser used to be impossible; ImgShifter does it with a ~300 KB WebAssembly build of the AVIF encoder that downloads once and is cached permanently. AV1 compression is genuinely heavy computation, so large photos take a few seconds on the CPU - the progress is visible, and the payoff is the smallest file any mainstream format can produce. Your photo itself never leaves the device.
Deploy AVIF where browsers are the audience: every modern one renders it. For email, desktop software, and upload portals, keep a JPG copy - and when you convert, always start from your best original, since stacking lossy encodes (JPG, then AVIF) costs a sliver of quality at each step.
Related tools
Other ImgShifter tools people use alongside JPG to AVIF.
PNG to AVIF
Convert PNG images to AVIF for dramatically smaller files - browser-based, no upload.
WEBP to AVIF
Convert WEBP images to AVIF for even smaller files - fully private, in-browser conversion.
JPG to PNG
Create crisp PNG files from JPG images with a fast local conversion workflow.
JPG to WEBP
Convert JPG images to modern WEBP for smaller file sizes with strong quality.
From the blog
Deeper guides related to JPG to AVIF from the ImgShifter blog.
WebP vs. JPEG vs. PNG vs. AVIF: Which Image Format Should You Actually Use?
JPEG, PNG, WebP, and AVIF compared in plain English — what each format does well, what it breaks on, where browser support stands in 2026, and which one to actually ship for photos, graphics, and the web.
Read the guideThe 2026 State of Web Graphics: PNG Is Out, AVIF and SVG Are In
Legacy PNG and JPEG are quietly being replaced by AVIF, WebP, and inline SVG. A data-driven look at why the migration is happening, how the formats actually differ at render time, and what to ship in 2026.
Read the guideFrequently asked questions
Short answers for image workflows, privacy, and supported formats.