Convert JPG to AVIF Online
AVIF is the most efficient web image format available today. Built on the AV1 video codec, it routinely produces files 40–50% smaller than JPG and 20% smaller than WebP at visually identical quality.
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Why convert JPG to AVIF?
AVIF's compression efficiency is genuinely a generational leap. Where WebP shaved roughly 30% off JPG, AVIF cuts another 20% on top of that. For high-resolution hero images, the difference is the gap between 800 KB and 350 KB — the kind of saving that turns a poor LCP score into a good one.
AVIF is supported in Chrome, Firefox, Edge, Safari (16.4+), and Opera — basically every modern browser. The remaining gap is small enough that pairing AVIF with a WebP fallback inside a <picture> element covers nearly 100% of users.
Encoding AVIF is slower than encoding JPG or WebP because the codec is doing significantly more work, but you only encode once and serve it forever. The conversion happens on our server in seconds — no need to install any tools locally.
Common use cases
- Aggressively optimizing hero images for Core Web Vitals
- Preparing modern <picture> sources with WebP fallback
- Reducing image weight on mobile-first sites
- Archiving photos in a future-proof, efficient format
How to convert JPG to AVIF
- Upload your JPG files — drag and drop into the uploader above, or click to browse. Up to 20 files per batch, 25 MB each.
- Confirm AVIF as the output format — the format selector is already pre-selected for this conversion. You can change it before clicking Convert if you change your mind.
- Click Convert — your JPG files are processed on our server in seconds. A progress bar shows live status for each file.
- Download the ZIP — your converted AVIF files are bundled into a ZIP for one-click download. Source files are deleted immediately afterwards.
JPG to AVIF — Frequently Asked Questions
Is the JPG to AVIF converter really free?
Yes — completely free, with no signup, no credit card, no watermarks, and no file count limits. The full feature set is available without any account.
Are my JPG files private?
Yes. Files are stored in a private directory outside the web root, never shared with anyone, and deleted immediately after you download your ZIP.
How many JPG files can I convert at once?
Up to 20 JPG files per batch, with a maximum of 25 MB per file. There are no limits on the number of batches you can run.
Does the converted AVIF keep the same image quality?
Quality is essentially indistinguishable from the JPG source at typical viewing sizes. AVIF uses lossy compression, but the quality settings are tuned for high fidelity, so the conversion produces visually identical results for almost all images.
Which browsers support AVIF?
Chrome, Firefox, Edge, Opera, and Safari (16.4 and later) all support AVIF. For the small remaining gap in coverage, serve AVIF inside a <picture> element with a WebP or JPG fallback.
Related image conversions
Or browse the full supported conversions matrix on the homepage.