Convert JPG to AVIF Online

Up to 50% smaller photo files — better quality, no blocking artifacts, free & instant

100% private — files never leave your device

Drop your JPEG files into the converter below, select AVIF output, and click Convert. AVIF is the most efficient image format available in 2025 — up to 50% smaller than JPG with better visual quality and no blocky compression artifacts. The format recommended by Google for web image delivery. No upload, no account, completely free. No sketchy ads, no fake download buttons, no file size limits — just an image converter that works.

jpg_to_avif.sh
$convert --input
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Drop JPG files here or browse files
PNG • JPG • WebP • AVIF • GIF • BMP • ICO
output
$Conversion complete ✓
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🔒 Privacy first: All conversion happens locally in your browser. Your JPG files are never uploaded to any server. Unlike most converters, nothing is uploaded anywhere.

Your Files Never Leave Your Browser

100% Client-Side Processing

Conversions run locally in your browser using the Canvas API, with Web Workers used when supported. Your image data stays on your device and is never uploaded to any server.

No Account. No Tracking of File Contents.

We use Google Analytics and Google AdSense for aggregated traffic stats and contextual ads when consent allows it. Theme and language preferences stay in your browser. We never see, read, or store the images you convert.

Open About Our Limits

Browser-based conversion has trade-offs: large files (>50 MB) may hit memory limits; animated GIF output flattens to a single frame; EXIF metadata is stripped; ICC color profiles may differ across browsers.

Questions? Contact us or read the full privacy policy .

> how_to_convert

  1. Upload your JPG file
    Drag and drop your JPEG image into the converter above, or click "browse files". Multiple files are supported for batch conversion.
  2. AVIF is pre-selected
    The output format is set to AVIF. Adjust the quality slider — 80% delivers up to 50% smaller files than the source JPG with minimal visible quality difference.
  3. Download your AVIF
    Click "Convert All", then download files individually or as a ZIP archive.

> jpg_vs_avif

FeatureJPGAVIF
CompressionLossy (DCT)Lossy (AV1, advanced)
Typical file sizeBaseline~50% smaller
Compression artifactsBlocky (8×8 grid)Smooth, minimal
Transparency (alpha)✗ No✓ Yes
Browser supportAll browsers, all appsChrome 85+, Firefox 93+, Safari 16+
Best use caseUniversal sharingModern web delivery

> frequently_asked_questions

How much smaller is AVIF compared to JPG?
AVIF typically produces files 40–50% smaller than JPG at equivalent visual quality. A 1 MB JPG photo becomes approximately 500–600 KB as AVIF at the same perceptual quality. This reduction directly improves page load speed and Core Web Vitals LCP scores.
Is AVIF better quality than JPG at the same file size?
Yes. AVIF produces smoother, cleaner images at any given file size. JPG creates blocky 8x8 pixel artifacts around edges and textures at high compression. AVIF uses more advanced encoding that avoids this — better gradients, sharper fine detail, and no grid-pattern noise at the same file size.
Is this one of those sketchy converters that secretly uploads my files?
No. Everything runs in your browser using the Canvas API — your files never leave your device, not even for a millisecond. There is no server-side processing, no upload queue, no "free tier that uploads anyway". The converter literally cannot access your files once you close the tab.
Do all browsers support AVIF in 2025?
AVIF is supported by Chrome (85+), Firefox (93+), and Safari (16+) — approximately 90% of global browser usage. For web delivery, use the <picture> element with an AVIF source and JPG fallback to serve AVIF to modern browsers and JPG to older ones — no users left with broken images.
What quality setting should I use for JPG to AVIF?
80% quality is the recommended starting point — files are 40–50% smaller than the source JPG with minimal visible quality difference. Use 85–90% for critical photography or print output. Use 70–75% for thumbnails and previews. AVIF quality per byte is higher than JPG, so lower settings remain visually acceptable.