If you often work with images, converting JPG to WebP is one of the easiest ways to reduce file size without sacrificing quality. WebP, developed by Google, offers both lossy and lossless compression, making it ideal for websites, designers, and developers who care about speed and visual fidelity.
Below, we’ve rounded up the 5 best free JPG to WebP converters that work seamlessly on Mac and Windows — including offline apps, command-line tools, and web-based options.
1. Any2Pic (Mac & Windows)
Any2Pic is a modern and lightweight desktop app that supports all major image formats, including JPG, PNG, WebP, SVG, HEIC, and more. It allows batch conversion with customizable quality settings and preserves transparency during conversion.
Key Features:
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Batch convert JPG to WebP quickly and offline.
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Adjustable quality, resize, and rename options.
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Clean drag-and-drop interface.
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100% privacy — no internet upload required.
Ideal for: Users who want a fast, reliable offline image converter.
Platform: macOS, Windows
Website: www.aiseefox.com/any2pic
2. ImageMagick (Command Line Tool)
ImageMagick is a powerful open-source image manipulation suite available for macOS, Windows, and Linux. It can convert images from the command line with fine-tuned control over quality, compression, and metadata.
Command Example:
Pros:
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Free and open source.
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Supports advanced batch scripting.
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Ideal for developers or automation workflows.
Cons:
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Requires basic command-line knowledge.
Platform: macOS, Windows, Linux
Website: imagemagick.org
3. cwebp (Google’s Official Encoder)
cwebp is part of Google’s WebP toolkit and provides a direct way to convert JPG to WebP from Terminal or Command Prompt. It delivers excellent compression efficiency and full control over quality and encoding parameters.
Command Example:
Pros:
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Maintained by Google.
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High compression performance.
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Great for developers optimizing web images.
Cons:
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Command-line only, no GUI.
Platform: macOS, Windows, Linux
Website: developers.google.com/speed/webp
4. Convertio (Online Converter)
Convertio is a popular online conversion platform that supports over 300 file types. You can easily upload JPG files and convert them to WebP directly from your browser — no installation needed.
Pros:
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Free for small files (under 100MB).
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Works in any browser.
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Easy drag-and-drop interface.
Cons:
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Uploading may take time for large files.
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Limited free conversions per day.
Platform: Web-based
Website: convertio.co/jpg-webp
5. CloudConvert (Online Converter)
CloudConvert is another reliable online tool offering flexible file conversion options. It allows you to fine-tune WebP quality, dimensions, and output format while supporting direct import from Google Drive or Dropbox.
Pros:
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Supports cloud imports and exports.
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Adjustable WebP quality and resolution.
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No software installation required.
Cons:
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Free version has limits on daily conversions.
Platform: Web-based
Website: cloudconvert.com/jpg-to-webp
Final Thoughts
Whether you prefer an offline converter like Any2Pic, or a command-line approach using ImageMagick or cwebp, or the convenience of online tools, these five options cover every need. For batch conversion and data privacy, Any2Pic stands out as the best balance of speed, quality, and usability.