WebP and AVIF Converter
Convert JPEG, PNG and GIF images to WebP or AVIF right in your browser. Compare sizes side by side, tune quality live and download. Files never leave your device.
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JPEG, PNG, GIF, WebP, AVIF · up to 20 files · converted locally, files never leave your browser
Your browser cannot encode AVIF yet. Chrome and Firefox current versions can. WebP works everywhere.
Why WebP and AVIF are the default image formats in 2026
Images are the heaviest thing on most pages, and the format you serve decides how fast a page feels. WebP compresses photographs 25 to 34 percent smaller than JPEG at the same visual quality, and adds transparency and animation on top. AVIF, built on the AV1 video codec, goes further still: 40 to 55 percent smaller than JPEG is typical for photographic content, with noticeably cleaner gradients at aggressive settings. Every current browser in 2026 displays both formats, which removes the last real excuse for shipping multi-megabyte JPEGs. The payoff shows up directly in Largest Contentful Paint, the Core Web Vitals metric most often blown by an oversized hero image, and in the bandwidth bill on image-heavy stores.
JPEG vs WebP vs AVIF at a glance
| Feature | JPEG | WebP | AVIF |
|---|---|---|---|
| Compression | Baseline | 25 to 34% smaller than JPEG | 40 to 55% smaller than JPEG |
| Transparency (alpha) | No | Yes, full alpha channel | Yes, full alpha channel |
| Browser support 2026 | Universal | Universal, every current browser | All current browsers, about 95% of traffic |
| Best use | Legacy pipelines, email, maximum compatibility | Everyday default: photos, UI images, transparent logos | Large hero photos, bandwidth-critical pages |
Rule of thumb: use AVIF for large photographic images where every kilobyte counts, WebP as your everyday default, and keep JPEG only where legacy tooling demands it. PNG remains the right choice for exact-pixel screenshots and anything that must stay lossless.
How this converter works, and picking a quality
Everything happens locally. Your browser decodes each image with the Canvas API, re-encodes it in the format you choose, and hands the file straight back to you. Nothing is uploaded, nothing is stored, and there is no file size limit beyond your device's memory. That also means encoding support depends on your browser: Chrome, Edge and Firefox encode both WebP and AVIF, while Safari currently displays AVIF but cannot yet encode it, so the AVIF option is disabled there. Animated GIFs convert as a single frame.
The quality slider is the lever that matters. 82, the default, is a strong general-purpose setting: photographs stay visually clean while file size drops sharply. Drop to 60 or 70 for large background images and hero sections, push to 90 or above for product photography where texture and fabric detail sell. Results re-encode instantly when you move the slider, so watch the savings badge on each file and find your sweet spot in seconds. Serve the modern formats, then watch the speed gain.
WebP and AVIF conversion FAQ
Is WebP better than JPEG?
For web delivery, yes in almost every case. At comparable visual quality WebP files are typically 25 to 34 percent smaller than JPEG, and WebP also supports transparency and animation, which JPEG never had. The only reasons to keep JPEG are legacy pipelines and old email clients. For anything served on a modern website, WebP is the safer default and every 2026 browser displays it.
Is AVIF better than WebP?
Usually, at the cost of slower encoding. AVIF is based on the AV1 video codec and compresses photos roughly 20 to 30 percent smaller than WebP at similar quality, with cleaner gradients and better low-light detail. WebP still encodes faster and has slightly wider tooling support. A common 2026 pattern is AVIF first with a WebP fallback inside a picture element.
Which browsers support WebP and AVIF in 2026?
WebP display is universal: Chrome, Firefox, Safari, Edge and every mobile browser render it. AVIF display is also effectively universal in current browsers, covering about 95 percent of global traffic. Encoding is different: this tool encodes with your browser, and as of 2026 Chrome, Edge and Firefox can encode AVIF while Safari can display it but not yet encode it.
What quality setting should I use?
Start at 82, the default here. For most photos, quality 75 to 85 in WebP or AVIF is visually indistinguishable from the original while cutting file size dramatically. Go lower, 60 to 70, for large hero backgrounds where fine detail is less visible, and higher, 90 plus, for product shots where texture matters. Watch the size badge on each file as you move the slider.
Do WebP and AVIF support transparency?
Yes, both support a full alpha channel, so they replace transparent PNGs directly. This is one of the biggest practical wins: a transparent PNG logo or product cutout converted to WebP is often 60 to 80 percent smaller with no visible difference. JPEG has no alpha channel at all, so pick WebP or AVIF whenever transparency matters.
Why convert images for WordPress?
Images are usually the heaviest assets on a WordPress page and the main driver of Largest Contentful Paint. WordPress has shipped native WebP support since 5.8 and AVIF support since 6.5, so converted files upload and render like any other image. Converting your media library, especially product photos and hero images, is one of the highest-impact speed fixes available.
Does Google prefer WebP images?
Google does not rank a page higher just for using WebP, but it strongly rewards the outcome: a faster Largest Contentful Paint and better Core Web Vitals, which are confirmed ranking signals. PageSpeed Insights explicitly flags heavy JPEG and PNG files and recommends serving images in next-gen formats. Converting to WebP or AVIF is how you clear that audit.
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