Feature #72872
open
Change default rendering for pdf thumbnails to png
0%
Description
Now if you have [GFX][thumbnails_png] = 0, the default value, pdf thumbnails are converted to gif.
If you set it to [GFX][thumbnails_png] = 1, pdf thumbnails are converted to png.
PDF used as images on FE are renderd via this chain, resulting in 256 color gifs on a page.
Add new config value for pdf2img conversion, like this:
[GFX][pdf2imgformat] = 'jpg'
[GFX][pdf2imgformat] = 'png'
[GFX][pdf2imgformat] = 'gif'
default should be jpg.
Updated by Riccardo De Contardi about 7 years ago
- Target version changed from 8 LTS to 9.0
Updated by Susanne Moog over 6 years ago
- Category changed from Content Rendering to Frontend
- Assignee deleted (
Fabian Thommen)
Updated by taywa gmbh over 5 years ago
- Target version set to Candidate for Major Version
Updated by Stephan Bauer about 3 years ago
I'm showing bigger images converted from pdf files in the frontend.
These images would be best shown as jpg not as gif or png.
Here is a comparison between the different file formats TYPO3 created.
The files are 600x425px.
GIF: 128kb
PNG: 934kb
JPG: 60kb
The png file is not optimized in any way. With an optimizer I could reduce the size to 325kb which is sill to much.
I could produce jpg file after changing $targetFileExtension to 'jpg' in file /sysext/core/Classes/Resource/Processing/AbstractGraphicalTask.php in line 81.
I think that the option 'thumbnails_png' should be deprecated and there should be an option where we can choose a file format even new formats like webp.
One problem I found after changing $targetFileExtension to 'jpg' is that some of these PDF files are converted to gif oder png with transparency and the jpg file shows a black frame because the color for transparency is set to this.