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Update README.md

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Milan Nikolic
2026-06-24 21:40:44 +02:00
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@@ -70,12 +70,24 @@ Commands:
Image height (default "0")
--fit
Best fit for required width and height (default "false")
--dpi
Document rendering resolution in DPI (PDF, EPUB, etc.), 0 uses the default (300) (default "0")
--format
Image format, valid values are jpeg, png, tiff, bmp, webp, avif, jxl (default "jpeg")
--archive
Archive format, valid values are zip, tar (default "zip")
--zip-level
ZIP compression level, 0 disables compression, 1-9 sets deflate level (1 fastest, 9 smallest), -1 uses the default (default "-1")
--quality
Image quality (default "75")
--effort
Encoder speed/effort, format-specific (webp method 0-6, avif speed 0-10, jxl effort 1-10), -1 uses the format default (default "-1")
--lossless
Lossless compression (webp, avif, jxl), ignores quality (default "false")
--combine
Combine all inputs into a single archive (default "false")
--outfile
Output file name for --combine (default: first input + -combined) (default "")
--filter
0=NearestNeighbor, 1=Box, 2=Linear, 3=MitchellNetravali, 4=CatmullRom, 6=Gaussian, 7=Lanczos (default "2")
--no-cover
@@ -114,10 +126,16 @@ Commands:
Image height (default "0")
--fit
Best fit for required width and height (default "false")
--dpi
Document rendering resolution in DPI (PDF, EPUB, etc.), 0 uses the default (300) (default "0")
--format
Image format, valid values are jpeg, png, tiff, bmp, webp, avif (default "jpeg")
--quality
Image quality (default "75")
--effort
Encoder speed/effort, format-specific (webp method 0-6, avif speed 0-10, jxl effort 1-10), -1 uses the format default (default "-1")
--lossless
Lossless compression (webp, avif, jxl), ignores quality (default "false")
--filter
0=NearestNeighbor, 1=Box, 2=Linear, 3=MitchellNetravali, 4=CatmullRom, 6=Gaussian, 7=Lanczos (default "2")
--outdir
@@ -138,6 +156,8 @@ Commands:
Image height (default "0")
--fit
Best fit for required width and height (default "false")
--dpi
Document rendering resolution in DPI (PDF, EPUB, etc.), 0 uses the default (300) (default "0")
--filter
0=NearestNeighbor, 1=Box, 2=Linear, 3=MitchellNetravali, 4=CatmullRom, 6=Gaussian, 7=Lanczos (default "2")
--outdir
@@ -189,6 +209,10 @@ Commands:
`cbconvert --format avif --quality 50 --width 1280 --outdir ~/comics /media/comics/Misc/`
* Combine several issues into a single archive:
`cbconvert convert --combine --outfile Series.cbz --outdir ~/comics issue1.cbz issue2.cbr issue3.cb7`
### Quality settings
This table maps quality settings for JPEG to the respective AVIF and WEBP quality settings: