starred/OpenEPaperLink
1
0
Fork 0
mirror of https://github.com/OpenEPaperLink/OpenEPaperLink.git synced 2026-03-21 12:05:51 +01:00
Code Issues 1.2k Packages Projects Releases 10 Wiki Activity

Help GIMP users find needed options

Jim Williams
2023-10-04 18:32:15 -05:00
parent f6c1e6ee63
commit b5866a547b
1 changed files with 2 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
usage/Image-specifications.md

@@ -7,6 +7,8 @@ When incorporating text in images, avoid using anti-aliasing. Rendering fonts wi
When saving the image file, it is recommended to use the maximum or near maximum JPEG quality. This ensures that the image employs 4:4:4 quantization, which maintains sharp transitions between red and white without introducing artifacts. Lower quality JPEGs often use 4:2:0 quantization, which can result in undesirable artifacts and less crisp transitions between colors.
To do this in GIMP, under Export (as jpeg) open Advanced Options and uncheck Progressive and select 4:4:4 from Subsampling.
👎 Wrong image: text rendered on a 24 bit RGB image, saved as standard quality, 300% zoomed for demo:
![Wrong image](usage/output-wrong.jpg)