Converter.Plus

JPG to AVIF Converter

Cut JPG payloads up to 50% with AVIF — the best modern image codec for Core Web Vitals. Convert in batch, in your browser, with no upload and no signup.

For modern web delivery, AVIF is currently the best-in-class image format — and converting your JPG files to AVIF can cut bandwidth by up to 50% versus JPG with no visible quality loss. You will most often encounter JPG files as camera and phone photographs in their default export format, social media uploads and email attachments, photos sent for printing or stock distribution, and AVIF is the obvious destination when your goal is high-traffic websites. Converter.Plus runs the whole JPG→AVIF conversion locally in your browser — there is no upload, no signup, no watermark, and no per-file size cap. Drop a single file or a whole batch and grab the results as individual downloads or a single ZIP.

Files are never uploaded.
How this works
Network: 0 bytes uploaded

Drop JPG files here

or click to select from your device

Drag up to 50 files·or a .zip of images

How to convert JPG to AVIF

  1. Open the JPG to AVIF converter: Go to converter.plus/jpg-to-avif in any modern browser on your computer or phone.
  2. Add your JPG files: Drag and drop your JPG files onto the upload area, or click it to browse your device and select them.
  3. Choose output format and quality: Select your preferred quality setting. The default is optimized for a great balance of file size and visual quality.
  4. Click Convert: Click the Convert button. Converter.Plus processes all files instantly in your browser — no upload or waiting required.
  5. Download your AVIF files: Download each converted image individually, or click Download All to save a ZIP archive containing all converted files.

Why use this JPG to AVIF converter

  • ✓100% private — your JPG files are converted in your browser and never uploaded to a server.
  • ✓Free with no signup, no watermark, no per-file size limit, and no daily quota.
  • ✓AVIF output is typically 25–50% smaller than JPG at the same visual quality, ideal for fast websites and lower bandwidth.
  • ✓Batch ready: drop dozens of JPG files at once and download them individually or as a single ZIP.
  • ✓Works offline once the page has loaded — the conversion code is cached as a Progressive Web App.
  • ✓No tracking pixels and no ad-personalisation cookies on the conversion result page.

About JPG → AVIF conversion

AVIF is the current leader in image compression efficiency — it achieves up to 50% smaller files than JPG at the same visual quality. For developers optimizing a content-heavy site or a product catalogue with hundreds of images, the cumulative impact on load time and Core Web Vitals is dramatic. AVIF is now supported natively in Chrome 85+, Firefox 93+, Safari 16+, and Edge 121+, covering over 90% of global web traffic. Drop your JPGs into Converter.Plus and convert them to AVIF in batch — no server, no plugins, no uploads.

For modern web delivery, AVIF is currently the best-in-class image format — and converting your JPG files to AVIF can cut bandwidth by up to 50% versus JPG with no visible quality loss.

Joint Photographic Experts Group (JPG) was standardized in 1992 by the JPEG committee. JPG is the most-used image format in history. Its lossy DCT-based compression made high-quality digital photography practical at sensible file sizes, and three decades later every operating system, browser, app, and printer accepts it without question. You will most often encounter JPG files as camera and phone photographs in their default export format, social media uploads and email attachments, photos sent for printing or stock distribution.

About JPG to AVIF Conversion

AVIF is the current leader in image compression efficiency — it achieves up to 50% smaller files than JPG at the same visual quality. For developers optimizing a content-heavy site or a product catalogue with hundreds of images, the cumulative impact on load time and Core Web Vitals is dramatic. AVIF is now supported natively in Chrome 85+, Firefox 93+, Safari 16+, and Edge 121+, covering over 90% of global web traffic. Drop your JPGs into Converter.Plus and convert them to AVIF in batch — no server, no plugins, no uploads.

Frequently Asked Questions

What is JPG?

The most universally supported image format, compatible with every operating system, app, and online service.

Why convert JPG to AVIF?

AVIF offers significantly better compression than JPG and PNG at the same visual quality — making files smaller and websites faster. It is widely supported in all modern browsers.

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Privacy & trust

  • •Your JPG stays on your device. Conversion runs locally via the browser's Canvas, WebAssembly, and image-decoding APIs.
  • •No account, no email, no payment information collected — Converter.Plus is free for personal and commercial use.
  • •No watermarks, no upsells inside the converted AVIF, and no compression caps on the output file.
  • •Open-source build pipeline — every release is reproducible from the public source and pinned dependencies.