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Convert JPG to AVIF Online Free — Fast Batch Conversion
How to Convert Images Online
1Upload your JPG file
Click the upload button or drag and drop your JPG file. You can upload up to 10 files at once for batch conversion.
2Select AVIF output format
Choose AVIF as the output format.
3Convert
Click Convert. AVIF encoding takes slightly longer than JPG or WebP — typically a few seconds per image.
4Download AVIF
Download your converted AVIF file. The original JPG is deleted from the server immediately after download.
Supported Image Formats
JPG
Universal format for photos. Supported everywhere, great balance between quality and file size.
AVIF
Next-gen format with excellent compression. Up to 50% smaller than JPG.
HEIC
Apple photo format used by iPhone and iPad. High quality with small file size.
HEIF
High Efficiency Image Format — same as HEIC, used on Apple devices.
WebP
Modern image format by Google. Up to 30% smaller than JPG with the same quality.
PNG
Lossless format that preserves every pixel. Best for screenshots and logos.
GIF
Classic format for simple animations. Supports transparency and up to 256 colors.
BMP
Uncompressed bitmap format. Maximum quality but very large file size.
TIFF
Professional lossless format used in printing and photography.
PPM
Portable Pixmap format used in Unix/Linux environments.
HDR
High Dynamic Range format storing extended brightness data.
FITS
Flexible Image Transport System used in astronomy and science.
PDF
Portable Document Format. Convert PDF pages to JPG, PNG or WebP images.
AVIF vs WebP vs HEIC vs JPG
Quick comparison to help you choose the right format
AVIF
- Size: Up to 50% smaller than JPG
- Browsers: Chrome, Firefox, Safari
- Transparency: ✓
- Best for: Web performance
WebP
- Size: 25-35% smaller than JPG
- Browsers: All modern browsers
- Transparency: ✓
- Best for: Web compatibility
HEIC
- Size: ~50% smaller than JPG
- Browsers: Safari only
- Transparency: ✓
- Best for: iPhone storage
JPG
- Size: Baseline
- Browsers: All browsers & apps
- Transparency: ✗
- Best for: Universal sharing
Frequently Asked Questions
- How much smaller will my AVIF be compared to JPG?
- Typically 40–50% smaller at the same visual quality. A 540 KB JPG will usually convert to approximately 200–270 KB AVIF. Results vary by content — smooth gradients and natural textures compress better than high-noise images or fine detail.
- Is AVIF supported by all browsers?
- AVIF is supported by Chrome 85+, Firefox 93+, Safari 16+, and Edge 121+ — covering approximately 94.9% of global browser traffic as of 2026. For the remaining ~5%, use a JPG fallback with the HTML <picture> element.
- Will converting JPG to AVIF affect image quality?
- At high quality settings, the difference is imperceptible. Convertify uses high quality settings by default, producing AVIF output that looks visually identical to the original JPG for most images. AVIF's more efficient compression means it achieves this at a significantly smaller file size.
- Can I open AVIF files in Photoshop?
- Photoshop added AVIF support in version 23.2 (2022) for import, with export support added later via Camera Raw. Lightroom Classic added AVIF in version 11.4. For broader app compatibility, JPG remains the safer format for files shared outside the browser.
- Does AVIF support transparency?
- Yes. AVIF supports full alpha channel transparency, unlike JPG. Converting a JPG with a white background to AVIF will preserve the white background — the background is not automatically made transparent. Use AVIF with alpha for images that genuinely require transparency.
- Can I convert multiple JPG files to AVIF at once?
- Yes. Convertify supports batch conversion — upload up to 10 JPG files and download them all as AVIF simultaneously. Note that AVIF encoding is slower than JPG or WebP — batch conversion may take a few extra seconds.
- Is AVIF better than WebP?
- AVIF achieves better compression than WebP in most benchmarks — typically 20–30% smaller at the same quality. However, WebP has broader app support (since 2010 vs 2019 for AVIF) and faster encoding. For new web projects, AVIF is the better choice. For maximum compatibility, WebP is still a strong option.
- What is the AV1 codec and how does it relate to AVIF?
- AV1 is an open, royalty-free video codec developed by the Alliance for Open Media. AVIF uses AV1 for image compression — essentially using a single video frame from the AV1 codec as an image format. This is why AVIF achieves such high compression: video codecs are optimized for complex, natural content in ways that traditional image codecs like JPG are not.
- Will Google rank my site higher if I use AVIF?
- AVIF itself is not a direct ranking signal, but its effect on page speed is. Smaller AVIF files reduce LCP (Largest Contentful Paint) — a Core Web Vitals metric that Google uses in ranking. PageSpeed Insights will reward you for using AVIF with a higher Performance score, which can indirectly improve rankings for competitive queries.
- How do I open AVIF files on Windows?
- Windows 11 supports AVIF natively since the 22H2 update. Windows 10 requires the AV1 Video Extension from the Microsoft Store (free). Alternatively, recent versions of Chrome and Firefox can open AVIF files directly in the browser.
Why convert JPG to AVIF?
AVIF (AV1 Image File Format) is the most advanced widely-supported image format available in 2026. Developed by the Alliance for Open Media — a consortium including Google, Apple, Mozilla, Microsoft, and Netflix — AVIF uses the AV1 codec to achieve compression rates up to 50% better than JPG at the same visual quality. Google PageSpeed Insights and Lighthouse recommend AVIF as the preferred format for web images. As of 2026, AVIF is supported natively by Chrome 85+, Firefox 93+, Safari 16+, and Edge 121+ — covering approximately 94.9% of global browser traffic.
AVIF vs JPG: compression benchmark
At equivalent visual quality (measured by SSIM/DSSIM), AVIF consistently outperforms JPG across image types. A typical product photo that is 540 KB as JPG at quality 80 will typically convert to approximately 210 KB as AVIF — a 61% reduction. Netflix's internal benchmarks across a dataset of diverse images showed AVIF achieving 50% better compression than JPG on average. A Ctrl.blog study of 600 images found AVIF outperforming JPG in 94% of cases. The gains are most significant for photographic content with smooth gradients and natural textures. Images with high levels of noise or very fine detail may see smaller improvements.
JPG vs AVIF: comparison
| Feature | JPG | AVIF |
|---|---|---|
| Compression vs JPG | Baseline | ~50% smaller |
| Browser support | All browsers & apps | 94.9% (Chrome, Firefox, Safari, Edge) |
| App support | Universal (30+ years) | Limited (new format) |
| Transparency | Not supported | Full alpha channel |
| HDR support | No | Yes (10-bit color) |
| Lossless mode | No | Yes |
| Encoding speed | Fast (~2ms) | Slow (1–2+ seconds) |
| Decoding speed | Very fast (~0.4ms) | Slower (~155ms) |
| Social media upload | Accepted everywhere | Often converted on upload |
| Best for | Universal sharing | Web delivery, SEO |
AVIF browser support in 2026
AVIF achieved Baseline status in 2024, meaning it is supported across all major browsers. Chrome added AVIF support in version 85 (2020), Firefox in version 93 (2021), Safari in version 16 (2022), and Edge in version 121 (2024). As of 2026, global AVIF browser support is approximately 94.9%. The gap — about 5% — consists primarily of older mobile browsers and legacy desktop browsers. For most websites, AVIF can be served as the primary format with a JPG fallback using the HTML
AVIF encoding speed — the main trade-off
AVIF's biggest practical limitation is slow encoding speed. While JPG encodes in approximately 2 milliseconds and WebP in 168 milliseconds, AVIF encoding typically takes 1–2 seconds per image at default settings with libaom (the reference encoder). This makes batch conversion of large image libraries time-consuming. Alternative encoders like rav1e and SVT-AV1 offer faster encoding at the cost of slightly larger files. Convertify uses libvips with an optimized AVIF encoder to balance quality and speed. For high-volume use cases, consider running AVIF conversion offline as a pre-processing step rather than real-time.
AVIF for Core Web Vitals and SEO
Largest Contentful Paint (LCP) is a Core Web Vitals metric that measures how quickly the main image on a page loads. AVIF files are typically 40–60% smaller than their JPG equivalents, directly reducing LCP time. PageSpeed Insights scores 'Serve images in next-gen formats' as a distinct audit — AVIF is the highest-scoring format recommendation. For e-commerce sites where hero images and product photos are the LCP element, switching from JPG to AVIF is the highest-impact change for page performance. Google's web.dev team benchmarks show AVIF achieving Lighthouse performance score improvements of 5–15 points for image-heavy pages.
AVIF and transparency
Unlike JPG, AVIF supports full alpha channel transparency. AVIF with alpha can replace both JPG (photos) and PNG (transparent graphics) in web contexts — with better compression than either. An AVIF file with transparency is typically 40–60% smaller than the equivalent PNG. This is particularly valuable for product images with transparent or white backgrounds, logos served on the web, and any image asset where transparency is needed alongside good compression.
When JPG is still the better choice
AVIF is not always the right format. For images shared outside the browser — email, social media direct uploads, photo editing software, messaging apps — JPG has far broader support. Instagram, WhatsApp, and most messaging platforms do not support AVIF and will convert or reject it. Most desktop photo editors still have limited AVIF support. For any workflow where the image needs to be opened on an unknown device or application, JPG is the safer choice. Use AVIF specifically for images served on your own website or app.
How to implement AVIF on your website
The recommended approach uses the HTML
How Convertify converts JPG to AVIF
Convertify uses a Rust backend with libvips for JPG to AVIF conversion. libvips uses a streaming pipeline that avoids loading the entire image into memory, making it efficient even for large JPG files. The conversion applies AVIF lossy compression at high quality settings by default, producing output that is visually identical to the source JPG while being significantly smaller. EXIF metadata is preserved. Files are processed server-side over an encrypted HTTPS connection and deleted immediately after download. No account required.