Bulk AVIF to WebP Converter
Convert AVIF images to WebP for broader tool, editor, and platform compatibility, while keeping modern compression and full transparency support.
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0 imágenes añadidasConvert AVIF to WebP in 3 Steps
No account, no install, no queue. Drop your AVIF files in and the WebP versions are ready to download.
- Step 1
Drop your images in
Drag files onto the page, click to browse, or drop in a ZIP and every supported image inside is pulled out. JPG, PNG, WebP, AVIF, HEIC, GIF and BMP all work, mixed together in the same batch.
- Step 2
Adjust if you want to
Choose your output format and drag the quality slider. That is the whole setup. Settings holds a KB target, resizing and batch renaming if you want them, and can stay closed if you do not.
- Step 3
Download your WebP files
Conversion starts on its own, so there is usually nothing to press. Batches over 40 wait for one click so nothing runs away with your machine. Download files one at a time or take the whole batch as a single ZIP.
Why Convert AVIF to WebP?
AVIF is the most efficient image format for web delivery today, but not every tool, platform, or workflow has caught up with it yet. Design tools like Figma and Sketch, some CMS platforms, older image processing pipelines, and certain CDN configurations don't yet handle AVIF reliably. WebP gives you a format that's still highly compressed and modern, while being accepted almost everywhere that matters outside of print and email. It's the practical middle ground between cutting-edge AVIF and universal JPEG.
AV1 Image File Format
AVIF delivers the best compression available for web images. 20–30% smaller than WebP at equivalent quality. But its newer status means some tools still struggle with it. Image editors may not open it, some server-side processing libraries don't support it, and platform upload validation occasionally rejects it. When your workflow hits one of these walls, WebP is the natural step down.
WebP Image Format
WebP is Google's web-optimized format. 25–34% smaller than JPEG and supported by every modern browser, most image editors, and the vast majority of web platforms. It handles both lossy and lossless compression with full transparency. While it doesn't reach AVIF's compression levels, it covers far more of the ecosystem where you actually need your images to work.
Everything You Need. Nothing You Don't.
Convert your entire AVIF library to WebP in one batch. Privately, without limits, and without leaving your browser.
True Bulk Conversion
Convert 10 or 500+ AVIF files to WebP in a single batch. No file caps, no queues, no waiting for a server.
100% Private & Secure
Client-side processing only. Your AVIF files never leave your device. No server, no cloud, no third party ever sees them.
Adjustable Quality Control
Set WebP quality from 1 to 100. Quality 85–90 is the sweet spot for AVIF source material. Use the before/after slider to dial it in visually before batch-processing.
ZIP Upload & Download
Upload a ZIP of AVIF files, download all converted WebP files as a single ZIP. One upload, one download, job done.
Batch File Renaming
Set a custom prefix, separator, starting number, and.webp extension. Preview the exact filename pattern before downloading.
the maximum size option
Need WebP output under 150 KB for a specific platform? Set a target and the tool automatically finds the right quality for each individual image.
Works on Every Device
Windows, Mac, Linux, Chromebook, iPhone, Android. Runs in any modern browser with no installation required.
Selective Processing
Upload a large AVIF library but only convert what you need. Select individual files. Only those are processed and downloaded.
Transparency Preserved
WebP supports full alpha transparency, so any transparent areas in your AVIF source images carry through perfectly. Need to remove transparency instead? Use our AVIF to JPEG converter for a clean white fill.
How SmallerImages Compares
Here's how our free AVIF to WebP converter stacks up against typical online converters.
| Feature | SmallerImages | Typical Converter |
|---|---|---|
| Bulk conversion (200+ files) | Yes | No 10–20 file limit |
| Browser-based (no server uploads) | Yes | No Files uploaded to server |
| Transparency preserved in WebP output | Yes | Varies. May drop alpha channel |
| ZIP file upload & download | Yes | No |
| Adjustable quality (1–100) | Yes | Limited presets |
| Target file size (KB) | Yes | No |
| Batch file renaming | Yes | No |
| Before/after comparison | Yes | No |
| Selective processing | Yes | No |
| 100% free, no signup | Yes | Freemium / ads |
| Ad-free | Yes | No |
When You Need AVIF to WebP
AVIF is excellent, but WebP gets you into more places. Here's when the trade-off makes sense.
CMS & Platform Upload Compatibility
WordPress, Shopify, Squarespace, and many other platforms have added AVIF support, but not always reliably. If your CMS is rejecting AVIF uploads or rendering them incorrectly, converting to WebP immediately resolves the issue while keeping modern compression.
Design Tool Workflows
Figma, Sketch, Adobe XD, and Photoshop all handle WebP with varying degrees of support, but AVIF support is inconsistent across versions. Converting to WebP before importing into your design workflow avoids compatibility headaches mid-project.
Server-Side Image Processing Pipelines
ImageMagick, libvips, Sharp, and other image processing libraries have added AVIF support in recent versions, but legacy deployments may not have it. WebP has much broader library support, making it the safer choice for older server environments.
Generating WebP Fallback Assets
Best practice for modern web delivery is serving AVIF with a WebP fallback for browsers that don't support it yet. Convert your AVIF library to WebP here to generate that fallback layer, then serve both using the HTML picture element.
Social & Marketplace Platforms
Platform image upload systems sometimes reject AVIF outright or transcode it in unexpected ways. WebP is universally recognized by modern upload pipelines, making it the more predictable choice for product images, profile photos, and listing assets.
Sharing with Developers on Mixed Stacks
If you're handing off image assets to a development team running an older stack or a third-party integration that doesn't support AVIF yet, WebP is a safe handoff format. It's modern enough to be efficient, mature enough to be universally accepted in web tooling.
Trusted for AVIF to WebP Conversion
Real feedback from people converting AVIF to WebP every week, from teams in the UK, US, India, Japan, Pakistan, the UAE and beyond.
Added some files mid-batch and the button changed to say it would only process the new ones. Little detail, but it means I am not reconverting work that is already done.
Been using Lightroom for years for this. Honestly, for straightforward AVIF to WebP work this is quicker. No launch time, no export dialog, just drop and go.
I work with pre-release marketing images and cannot put them on someone else's server. Everything here happens locally, so AVIF to WebP conversion is finally something I can do without a compliance conversation first.
What surprised me was that it stays responsive during a big batch. The page does not lock up, the progress updates, and I can keep working in another tab.
often 20-30% smaller again than WebP on photographs. Moving them to WebP was the obvious fix, I just needed something that would do it in bulk without a subscription. This does.
I was sceptical about the target size mode but it works properly. Asked for under 200 KB and every WebP file came in just under, with the quality it could manage at that budget rather than some fixed preset.
Used it on Windows at the office and on a Mac at home with identical results. No install, no licence, nothing to sync.
Converted our whole media library and Lighthouse stopped complaining about image delivery. Largest Contentful Paint came down noticeably on the pages with the heaviest AVIF assets.
Genuinely no ads, no watermark, no daily cap. I kept waiting for the catch and there isn't one. I have converted a few thousand AVIF files at this point.
The batch handling is the reason I keep this bookmarked. 150 AVIF images to WebP in one pass, with a progress bar that actually tells you which file it is on. Most converters choke well before that.
Being able to upload a ZIP and download a ZIP is what makes this usable for real work. I am not selecting 200 AVIF files by hand and I am definitely not downloading 200 WebP files one at a time.
The batch renaming is a small thing that saves a lot of tedium. Prefix, separator, starting number, and the whole WebP batch comes out named properly for the CMS instead of DSC_0481.
AVIF to WebP Conversion and Compression Explained
What changes when you convert AVIF to WebP, what it costs, and how to pick a quality setting you will not regret.
AVIF compresses harder than anything else in common use, which makes it excellent for delivery and awkward for everything else. Editors, marketplaces and older devices frequently cannot open it. Converting to WebP produces a copy that works in the places AVIF does not reach yet.
Both formats are lossy, so the conversion re-encodes rather than copies. Keep quality at 85 or above if the file is going to be edited again, and use the before and after slider to check the first image of a batch before you commit to the rest.
Set quality once and it applies to the whole batch, so a folder of two hundred files takes the same number of decisions as one. Everything runs on your own machine, so speed depends on your processor rather than on how busy a server is. If you are working to a hard limit, such as a content management system that rejects anything over 200 KB, open Settings and set a maximum file size instead of a quality percentage. The encoder then searches for the best quality that fits your budget, file by file.
All Formats. One Tool.
AVIF to WebP is one of twenty-four conversion paths here, and each one has its own page with defaults already set for that pair. Whichever you land on, the tool behind it is the same: it accepts JPG, PNG, WebP, AVIF, HEIC, GIF and BMP, reads ZIP archives, and handles up to 500 images in a single batch.
Conversion runs in your browser using your own processor, so nothing is uploaded, nothing is queued behind other people, and there is no account, no watermark and no daily cap. Close the tab and the files are gone from memory; they were never anywhere else.
If you need a smaller file rather than a different format, the image compressor keeps your originals and works to a quality level or a size in kilobytes. To change dimensions, the image resizer handles fit, fill and crop, or stretch across a whole folder at once.
Frequently Asked Questions
Quick answers about converting AVIF to WebP.
Is it safe to convert AVIF to WebP on SmallerImages?
Will my files get larger when I convert AVIF to WebP?
Does transparency carry through from AVIF to WebP?
What quality setting should I use for WebP output?
Why would I convert from AVIF back to WebP?
Can I also convert AVIF to PNG or JPEG?
How many AVIF files can I convert at once?
Is SmallerImages completely free?
Can I upload a ZIP of AVIF files?
What if I want to go from WebP to AVIF instead?
AVIF Is Great. WebP Gets You In the Door.
When your tools, platform, or workflow pushes back on AVIF, WebP is the smart fallback. Modern compression, full transparency, universal browser support. Convert your AVIF library for free, right now, without uploading a single file.
Convert AVIF to WebP Now