Convert hundreds of JPG, PNG & WebP images at once — free, in your browser, no upload. Mixed formats in, one ZIP out. No signup, no watermark.
Drop your images here
or click to browse
Supports: JPG, PNG, WebP, AVIF, GIF, BMP, SVG, up to 10MB each
Your files are 100% private. Processed in your browser — never uploaded.
Need help? Check our guide
Lower quality = smaller size
Target file size, watermark & metadata control are available on Pro.
Pro Tip
WebP gives you the best quality at smaller file sizes. Perfect for websites and faster loading.
Real test: 28 CC0 product photos converted to WebP (quality 80) in the browser — 75% smaller overall, median 80% per image. Results vary by image content and device.
Quick answer
The BatchSet bulk image converter converts hundreds of images to WebP, JPG or PNG at once, free and entirely in your browser. Files process in parallel across your CPU cores and download as a single ZIP — no upload wait, no signup and no watermark.
Three quick steps — free, private, right in your browser.
Add hundreds of files at once — JPG, PNG, WebP, GIF, BMP, SVG.
Choose one output format and quality for the whole batch.
All images convert in parallel, then download them as a ZIP.
| Feature | BatchSet | CloudConvert | Squoosh |
|---|---|---|---|
| Bulk conversion | Unlimited, free | 10 free credits/day | Single file only |
| Browser-based | Yes | No (server upload) | Yes |
| Excel / URL batch | Free | Paid | No |
| ZIP download | Yes | Yes | No |
| Formats | JPG, PNG, WebP, GIF, BMP, SVG | 200+ formats | WebP, JPG, PNG, AVIF |
| Privacy | No upload | Uploads to server | No upload |
| Signup | No | Yes | No |
| Paid plan | $19.99/mo Pro | Credit packs | Free / open source |
There's no fixed limit. Batches of several hundred are common and run in parallel across your CPU cores, so even large batches finish in seconds. It's completely free with no signup.
BatchSet uses multi-core Web Workers to convert images directly in your browser — there's no upload, so there's no waiting on a server.
No. Everything happens locally on your device, which keeps it fast and fully private.
Yes — one click downloads all converted images as a single ZIP file.
Yes, use the Excel Batch Convert tool to convert hundreds of image URLs from an Excel or CSV file.
Input: JPG, PNG, WebP, GIF, BMP and SVG. Output: WebP, JPG or PNG for free — HEIC and TIFF are supported with a free account.
Up to 10 MB per file with no signup, 25 MB on a free account, 100 MB on Pro and 500 MB on Enterprise. There's no fixed cap on how many files a batch can contain — it's bound by your device, not a server.
Make sure it's a supported image (JPG, PNG, WebP, GIF, BMP, SVG) and isn't corrupted or above your file-size limit. For very large batches, converting in smaller groups avoids hitting your browser's memory limit.
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OpenUnlock HEIC/TIFF, bulk Excel jobs, watermarking, file backup and more — free to start.
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