Add-ons
PNGquant 2.0
by Christian Krause
Compresses PNG attachments and inline images using libimagequant (WASM) and asks for confirmation before sending.
About this Add-on
The most advanced image compressor for Thunderbird—in both compression performance and usability:
- State-of-the-art compression algorithms like JPEGli, pngquant, and oxipng, integrated as WASM libraries.
- Create, import, and export your compression templates, and apply them automagically to specific image types (quoted, inline, attachments)—or do it manually if you prefer.
- Compress, undo, repeat ... and adjust templates—refine your workflow and gain a deeper understanding of how image compression works.
- Safes 70 - 80 % space even without resizing; converts PNG to JPG if it safes space; resize to HTML inline size
- Use different resize algorithms, optimized for PNG (Mitchell) or typical JPG images (Lanczos)
- Remove images from quotes completely
- Exclude images from future compression. Use it for your own signature
- Download compressed images directly and use this extension for other compression workflows on your computer—like optimizing images for websites
- 9 languages
- State-of-the-art compression algorithms like JPEGli, pngquant, and oxipng, integrated as WASM libraries.
- Create, import, and export your compression templates, and apply them automagically to specific image types (quoted, inline, attachments)—or do it manually if you prefer.
- Compress, undo, repeat ... and adjust templates—refine your workflow and gain a deeper understanding of how image compression works.
- Safes 70 - 80 % space even without resizing; converts PNG to JPG if it safes space; resize to HTML inline size
- Use different resize algorithms, optimized for PNG (Mitchell) or typical JPG images (Lanczos)
- Remove images from quotes completely
- Exclude images from future compression. Use it for your own signature
- Download compressed images directly and use this extension for other compression workflows on your computer—like optimizing images for websites
- 9 languages
