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Preview of LeanImage

LeanImage by Painee

Compress local JPG, PNG, and WebP images into JPEG or WebP files and compare their sizes before downloading.

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About this extension
Compress local JPG, PNG, and WebP images into JPEG or WebP files. Review the original and output images side by side, compare file sizes, and send the compressed copies to Firefox Downloads.
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Permissions and data

Required permissions:

  • Download files and read and modify the browser’s download history

Data collection:

  • The developer says this extension doesn't require data collection.
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More information
Version
1.0.0
Size
24.21 KB
Last updated
2 months ago (Sep 8, 2026)
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