Image
Convert JPG to AVIF
Free, private, and instant — your files never leave your device.
AVIF typically produces files 50% smaller than JPEG at equivalent visual quality, making JPG-to-AVIF one of the highest-leverage optimizations for modern web delivery. Both formats are lossy, so re-encoding applies compression on top of the existing JPEG compression — use a high quality setting (75%+) to keep the additional quality loss imperceptible. The payoff is significant: a photograph that weighs 400 KB as a JPEG can drop to 180–220 KB as an AVIF with no visible quality difference. AVIF also supports features JPEG doesn't: transparency, HDR, and wide color gamut.
JPEG
Joint Photographic Experts Group
- Lossy compression
- No transparency
- Best for: photographs, social media images, email attachments
AVIF
AV1 Image File Format
- Lossy compression
- Supports transparency
- Best for: high-efficiency web images, HDR photography, modern web delivery
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How to Use
- 1
Drop your JPG — the output is already set to AVIF.
- 2
Adjust the quality slider. 75–80% is a solid web default; use 85%+ for product or portfolio images.
- 3
Click "Convert to AVIF" — encoding runs locally in WebAssembly and takes a few seconds.
- 4
Download the AVIF. Requires Chrome 85+, Firefox 93+, or Safari 16+ to display.
Frequently Asked Questions
How much smaller will the AVIF be than the JPEG?
Typically 40–60% smaller at equivalent visual quality. AVIF's AV1-based compression is far more efficient than JPEG's DCT algorithm, especially for photographs and natural scenes with smooth gradients.
Does re-encoding from JPEG reduce quality further?
Yes — both JPEG and AVIF are lossy, so the second compression pass discards additional detail. At quality settings of 75%+, this extra loss is barely perceptible in photographic content. Avoid low settings to prevent compounding artifacts from both compression rounds.
Will the AVIF look the same as the JPEG?
At high quality settings, yes — AVIF's compression is better at preserving perceptual quality, so the output often appears cleaner than the source JPEG despite being smaller. At lower settings, AVIF artifacts (smooth edges, slight blurring) differ from JPEG ringing artifacts.
Does AVIF support features JPEG doesn't?
Yes: AVIF supports alpha-channel transparency, HDR (high dynamic range), wide color gamut, and 10-bit+ color depth. For ordinary 8-bit sRGB photos these features are not active, but they become relevant in HDR or professional photography workflows.