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Convert AVIF to WEBP Online Free — Fast Batch Conversion
How to Convert Images Online
1Upload your AVIF file
Click the upload button or drag and drop your AVIF file onto the converter.
2Convert
Click Convert. Convertify processes your file instantly using Rust and libvips.
3Download WebP
Download your converted WebP file. The original AVIF is deleted from the server immediately.
Supported Image Formats
WebP
Modern image format by Google. Up to 30% smaller than JPG with the same quality.
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.
PNG
Lossless format that preserves every pixel. Best for screenshots and logos.
JPG
Universal format for photos. Supported everywhere, great balance between quality and file size.
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
- Will converting AVIF to WebP increase file size?
- For photographs, yes — typically by 30–40%. AVIF achieves 20–35% better compression than WebP for photographic content. For flat graphics and illustrations, the size difference is smaller and WebP may occasionally be comparable or smaller.
- Does WebP support transparency like AVIF?
- Yes. Both AVIF and WebP support full alpha channel transparency. Transparent backgrounds, cutout images, and logos convert cleanly from AVIF to WebP with transparency fully preserved.
- Which browsers support WebP but not AVIF?
- Older Safari versions (iOS 15 and below, macOS Monterey and earlier) support WebP but not AVIF. Legacy Edge builds and some embedded browsers also fall into this category. WebP reaches ~97% of browsers versus AVIF's ~95% globally.
- Does WebP support animation?
- Yes. WebP supports animation with full color and transparency. Animated AVIF converts to animated WebP. WebP animation has more consistent browser support than AVIF animation, which can vary by browser version.
- Can I convert multiple AVIF files to WebP at once?
- Yes. Convertify supports batch conversion — upload up to 10 AVIF files and download them all as WebP simultaneously.
- Why does my CDN serve WebP even though I uploaded AVIF?
- Most image CDNs (Cloudinary, Imgix, Cloudflare Image Resizing) automatically serve the best format for each browser based on the Accept header. They may serve WebP to browsers without AVIF support while serving AVIF to Chrome and Firefox. This is the intended behavior — your original AVIF is preserved.
- Is AVIF or WebP better for web images in 2026?
- AVIF compresses photos 20–35% smaller than WebP at equivalent quality, making it the better choice for web delivery where bandwidth matters. WebP is better for workflows requiring fast encoding, broad tool compatibility, or when serving to the ~5% of browsers that support WebP but not AVIF. The best practice is to serve AVIF with WebP as fallback using the HTML picture element.
- Does converting AVIF to WebP preserve EXIF metadata?
- Convertify preserves color profiles during conversion. EXIF metadata handling depends on the source file — WebP supports EXIF, XMP, and ICC profiles.
Why convert AVIF to WebP?
AVIF achieves 20–35% better compression than WebP for photographs — but WebP has one critical advantage: it is universally supported. While AVIF reaches ~95% of global browsers as of 2026, the remaining 5% includes older Safari (iOS 15 and below), legacy Edge versions, and various embedded environments. More importantly, desktop tools tell a different story: Figma lacks native AVIF support, Sketch cannot export AVIF, and many CMSs and image pipelines still process WebP but not AVIF. Converting AVIF to WebP gives you a file that works in virtually every context — browser, app, design tool, and CDN — without configuration.
AVIF vs WebP: key differences
| Feature | AVIF | WebP |
|---|---|---|
| Compression vs JPEG | ~50% smaller | ~30% smaller |
| Compression vs each other | 20–35% smaller | Baseline |
| Encoding speed | 1–48 seconds/image | ~90 ms/image |
| Browser support (2026) | ~95% (Chrome 85+, Firefox 93+, Safari 16+) | ~97% (all modern browsers) |
| Figma / Sketch support | Not supported natively | Partial support |
| WordPress native | Since v6.5 (March 2024) | Since v5.8 (July 2021) |
| CDN auto-format | Cloudflare, Cloudinary, Imgix | All major CDNs |
| Animation | Supported (varies by browser) | Fully supported |
| HDR / wide-gamut | Yes | No |
| Best for | Maximum compression, web delivery | Broad compatibility, fast encoding |
Compression benchmarks: AVIF vs WebP across quality levels
Independent benchmarks consistently show AVIF's advantage over WebP, though the gap varies by content type. Krunkit's 2026 test encoding a 4.1 MB JPEG source at matched perceptual quality found AVIF files averaging 32% smaller than WebP for photographs: at medium quality, 132 KB AVIF versus 198 KB WebP; at high quality, 348 KB versus 512 KB. Daniel Aleksandersen's 600-image DSSIM-normalized study found AVIF's median savings over JPEG (50.3%) exceeded WebP's (31.5%) by roughly 27 percentage points. For flat graphics and simple logos however, WebP can actually compress better — SpeedVitals found WebP 35% smaller for a simple logo at equivalent quality. The practical takeaway: if your AVIF file contains photographic content, converting to WebP will increase file size by roughly 30–40%. If it contains illustrations or flat graphics, the size difference may be minimal.
Encoding speed: why it matters for your workflow
AVIF encodes 12–47× slower than WebP at default settings. On a 4-core server, encoding a 1920×1080 image takes ~90 ms in WebP versus ~4.2 seconds in AVIF at default quality (speed 6). At maximum quality (speed 0), AVIF takes up to 48 seconds per image. This gap has real workflow implications: batch processing 10,000 product images takes roughly 15 minutes with WebP versus 11+ hours with AVIF at default settings. Framer's CDN team found AVIF encoding took 1–2 seconds versus 100–300 ms for WebP — a 3–10× gap that required a 'stale-while-revalidate' strategy. If you have AVIF files and need to serve them in a pipeline with time constraints, WebP is the practical target format.
CDN support: AVIF and WebP in production
Major CDNs handle AVIF and WebP differently. Cloudinary's f_auto parameter has served AVIF since August 2020, selecting AVIF → WebP → JPEG automatically based on browser support — though images under 5,000 pixels are excluded from AVIF delivery because container overhead outweighs savings. Imgix made AVIF its default for auto=format in December 2021; Unsplash reported a 30% file-size reduction switching from WebP to AVIF via Imgix. Cloudflare Image Resizing supports AVIF with format=auto, but Cloudflare Polish does not — only WebP. BunnyCDN supports WebP only, citing AVIF's encoding cost as a reason to skip it. If your CDN handles format negotiation automatically, converting AVIF to WebP may not be necessary — the CDN serves the right format per browser. But if you are delivering static files directly, WebP reaches 2% more users than AVIF.
WordPress workflows: AVIF vs WebP in 2026
WordPress added native AVIF support in version 6.5 (March 2024), three years after WebP arrived in WordPress 5.8 (July 2021). Both formats are uploadable in modern WordPress, but plugin support tells the full story. ShortPixel converts and serves both AVIF and WebP with browser-based format negotiation; Imagify does the same from $4.99/month; EWWW Image Optimizer handles both with free unlimited lossless compression on your server. One notable exception: WebP Express handles only WebP and has no AVIF support. If you are working with AVIF images that need to go into a WordPress media library on an older install (pre-6.5), converting to WebP first ensures compatibility. Most modern WordPress setups with image optimization plugins will serve WebP to browsers that cannot handle AVIF, making manual conversion unnecessary if the plugin is configured correctly.
When to convert AVIF to WebP
Convert AVIF to WebP when: your image pipeline or CDN supports WebP but has not yet added AVIF; you are uploading to a platform (social media, stock photo site, email marketing tool) that accepts WebP but rejects AVIF; you are working in a design tool like Sketch that exports WebP natively but not AVIF; you need to process images at scale in real time and cannot absorb AVIF's encoding latency; you are serving animated images and need consistent cross-browser behavior; or your audience includes iOS 15 users who cannot display AVIF. Keep AVIF as your primary format for static files with CDN delivery — convert to WebP only when compatibility requirements make it necessary.
How Convertify converts AVIF to WebP
Convertify uses a Rust backend with libvips for AVIF to WebP conversion. libvips processes images using a demand-driven streaming pipeline that avoids loading the entire file into memory — making it efficient even for large AVIF files. Color profiles and transparency from the AVIF source are preserved in the WebP output. Both AVIF and WebP support full alpha channel transparency, so transparent backgrounds convert cleanly. Files are processed server-side over an encrypted HTTPS connection and deleted immediately after download. No account required.