AVIF to WEBP converter: free, fast and secure
This free AVIF to WEBP converter turns your AVIF images into WEBP files in seconds, right in your browser. AVIF is new, so desktop apps, older phones and many upload forms cannot open it yet. WEBP is far more compatible. WEBP makes images about 25–35% smaller than JPG, which helps your website load faster and can improve your Google ranking.
Unlike most converters, ConvertKaro never uploads your images. The conversion happens on your own device, so it is quicker, there are no file limits, and your photos stay private.
How to convert AVIF to WEBP in 3 steps
- Add your AVIF files. Tap “Select files” or drag and drop one or more .avif images into the box above. You can also paste a screenshot with Ctrl+V.
- Adjust the options. Set the quality slider. Lower quality means a smaller WEBP file.
- Download your WEBP. Conversion starts instantly. Download each WEBP file, or all of them at once as a ZIP.
Why use ConvertKaro AVIF to WEBP? Free, fast and secure
There are many AVIF to WEBP websites, but most of them upload your files, add watermarks or ask you to pay. Here is why this one is better.
100% Free
AVIF to WEBP on ConvertKaro costs nothing. There is no trial, no premium plan and no hidden limit, so you can use it as often as you like.
Fast results
Because nothing travels to a server, results appear almost instantly. Large files are limited only by the speed of your own phone or computer.
Secure and private
Nothing is uploaded. Sensitive files like Aadhaar, PAN, salary slips or contracts stay on your own phone or laptop the whole time.
No signup, no watermark
No account, no email and no watermark on your result. Open the page and start.
Works on every device
Designed for mobile first, so it works just as well on your phone as on a desktop computer.
Quality you control
A simple quality slider lets you choose between the smallest file and the best picture, with a sensible default already set.
ConvertKaro vs other online converters
| ConvertKaro | Typical online tool | |
|---|---|---|
| Price | Free forever, every feature | Free trial, then paid plans |
| Your files | Stay on your device | Uploaded to a server |
| Signup | Not needed | Often required |
| Watermark or ads on result | Never | Common on free plans |
| Speed | Instant, no upload wait | Depends on upload speed |
| Daily limits | None | Usually limited |
AVIF vs WEBP: what is the difference?
Both formats store images, but they are built for different jobs. Here is a quick comparison.
| AVIF | WEBP | |
|---|---|---|
| Full name | AV1 Image File Format | WebP (by Google) |
| Type | Raster, lossy or lossless | Raster, lossy or lossless |
| Compression | Lossy and lossless (AV1) | Lossy and lossless |
| Transparency | Yes | Yes |
| Animation | Yes | Yes |
| File size | Smallest | Very small |
| Support | Chrome, Edge, Firefox, Safari 16+; few desktop apps | All modern browsers; some older apps cannot open it |
| Best for | High-performance websites, modern apps | Website images, faster page loads, e-commerce |
What is AVIF?
AVIF is the newest mainstream image format, based on the AV1 video codec. It often makes files 30–50% smaller than JPG and noticeably smaller than WEBP at the same visual quality, with support for transparency, HDR and wide colour. Modern browsers display AVIF, but many desktop apps, older phones and upload forms still cannot open it.
What is WEBP?
WEBP is a modern image format released by Google in 2010. It produces files roughly 25–35% smaller than JPG at similar quality, supports transparency like PNG and can even hold animation. Most websites now serve WEBP to load faster. The catch is compatibility: some older Windows photo viewers, editing apps, printers and upload forms still refuse WEBP files.
When should you convert AVIF to WEBP?
- Product photos for Shopify, WooCommerce and other online stores
- Blog and website images that need to load fast
- Improving Core Web Vitals and PageSpeed scores
- Saving storage on image-heavy sites
Tips for the best WEBP results
- For websites, 75–85% quality is usually the best balance between size and sharpness.
- You can convert many AVIF files at once. They are processed one after another and can be downloaded together as a ZIP.
- Keep your original AVIF files until you have checked the converted WEBP images.
How AVIF to WEBP keeps your photos and images private
When you add a file to AVIF to WEBP, it is opened with your browser’s own engine, processed in memory and offered back to you as a download. ConvertKaro never receives a copy. This is why the tool is fast even on 4G, why there is no daily limit, and why it is safe for confidential photos and images like ID proofs, bank documents, contracts and family photos.
Using AVIF to WEBP on your phone
On a phone, open this page in Chrome or Safari, tap the main button and pick files from your gallery, Files app or Google Drive. Results download straight to your phone, usually into the Downloads folder or Files app. You can also add this page to your home screen for one-tap access next time.
Who uses AVIF to WEBP?
Here are some of the people who find this tool most useful:
- Students uploading photos and signatures to exam and admission forms
- Online sellers preparing product photos for Instagram, Meesho, Amazon and Shopify
- Office staff handling ID cards, scans and screenshots
- Bloggers and web designers who need fast-loading images
- Anyone sharing pictures on WhatsApp, email or social media
Supported input: JPG, JPEG, PNG, WEBP, HEIC/HEIF (iPhone), AVIF, GIF, BMP, TIFF and SVG.
Frequently asked questions
Will converting AVIF to WEBP reduce quality?
WEBP stores the image lossy and lossless, so no extra quality is lost during conversion.
Does WEBP keep transparency from AVIF?
Yes. WEBP supports transparency, so transparent areas in your AVIF stay transparent.
Can I convert multiple AVIF files to WEBP at once?
Yes. Select or drop as many AVIF images as you like. Each one is converted separately, and you can download them all together as a ZIP file.
Is AVIF to WEBP really free?
Yes, completely free. You can use it as many times as you want, and every option on the page is included at no cost.
Is it safe to use AVIF to WEBP online?
Yes. Your files are processed inside your own browser and are never uploaded to our servers, so nobody else can see them.
Does AVIF to WEBP work on mobile?
Yes, the tool is built mobile-first. Open this page on your phone, add your files and download the result directly.
Is there a file size limit in AVIF to WEBP?
There is no fixed limit set by us because files are not uploaded. Very large files depend on your device’s memory; most phones handle files of 100 MB or more without problems.
Will ConvertKaro add a watermark or ask me to sign up?
No. There is no watermark, no login and no email required. Your downloaded file is exactly your result.
Does AVIF to WEBP work offline?
Once this page has finished loading, the tool keeps working even if your internet connection drops, because all processing happens on your device.