All Questions
Tagged with image-processing compression
7
questions
0
votes
1
answer
51
views
Which compression modes of convert of imagemagick are lossless (with -quality 100)?
On my Debian 12,
$ convert -list compress
B44A
B44
BZip
DXT1
DXT3
DXT5
Fax
Group4
JBIG1
JBIG2
JPEG2000
JPEG
LosslessJPEG
Lossless
LZMA
LZW
None
Piz
Pxr24
RLE
RunlengthEncoded
WebP
ZipS
Zip
Zstd
Which ...
- 149
0
votes
1
answer
41
views
File Size increases on basic pdf -> raster image -> pdf roundtrip with `pdfimages` + `magick`
Why do I not succeed into making this simple pdf → raster image → pdf round-trip file-size-stable?
$ # Get original file (8KB, just extracted from my scanner).
$ curl "https://nextcloud.mbb.cnrs....
- 366
6
votes
2
answers
3k
views
Add 'Save as webp' To windows 10, Right Click Context Menu
I would like to know if there is a way to add 'Save As WebP' image file format to windows 10 right click context menu. Through the registry. WebP images are a new file format that is designed ...
- 123
0
votes
1
answer
108
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Why this scanned book image has no background?
If you save this image on your desktop, you see it's background color as your desktop color. If you open it with Adobe Photoshop, its background id checkered which means it has no background. It's ...
- 1,086
1
vote
1
answer
2k
views
reducing the size of PDF file of scanned images
I downloaded this PDF file from a website which is 350 KB in size with 20 pages. All pages are scanned images. I extracted the images using Adobe Acrobat Pro which are 1.32 MB in size collectively (...
- 1,086
5
votes
0
answers
1k
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Gifsicle: How to set it to not overwrite the original GIF file if the resulting modified GIF file is larger than the original?
About Gifsicle:
Gifsicle is a command-line tool for creating, editing, and getting information about GIF images and animations.
One of its features is (from its website):
Optimize your ...
- 6,313
7
votes
12
answers
5k
views
How to compress a huge amount of PNG images?
At work, on certain projects I have to manage a lot of images. Most of the time PNG files work the best for what I'm doing.
With such a huge amount of images, I've tried using PNG compression with ...
- 2,165