If you work with web images, you're converting between formats constantly. Here are 6 free tools worth knowing.
1. Convertify
Convertify supports WebP, HEIC, AVIF, PNG, JPG, TIFF and 20+ other formats. Built with Rust + libvips. Batch conversion up to 10 files, no signup, no watermarks, files deleted within 6 hours.
Pros: Fast, no account required, 20+ formats, quality control slider, batch conversion
Cons: 20MB per file limit, no editing features
2. Squoosh
Google's open-source tool. Runs entirely in the browser via WebAssembly. Excellent for fine-tuning compression — side-by-side preview and full control over encoding parameters.
Pros: In-browser, open source, excellent compression control, supports AVIF
Cons: Single file only, no batch conversion
3. Cloudinary
The industry standard for production image pipelines. Free tier gives you 25GB storage and on-the-fly format conversion via URL parameters.
Pros: API access, CDN delivery, automatic format negotiation
Cons: Requires account, overkill for simple conversions
4. ILoveIMG
Simple interface, handles batch WebP conversion well. Supports resize, compress, and crop alongside conversion.
Pros: Batch conversion, extra editing tools, no signup needed for basic use
Cons: Ads on the page, slower than dedicated converters
5. Convertio
Handles 300+ formats including WebP. Good for occasional use when you need a format the other tools don't support.
Pros: Huge format support, cloud storage integration
Cons: Free tier limited to 100MB, requires account for batch
6. EZGIF
Old-school UI but reliable. Good for WebP to GIF and animated WebP specifically.
Pros: Free, handles animated WebP, no account
Cons: Outdated interface, file size limits, ads
Bottom line
For most web developers: Squoosh for single files where you want compression control, Convertify for batch conversion across multiple formats without friction.
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