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+--- Thread: open pdf so that pages are layers and order of layers is reversed order of pages (/Thread-open-pdf-so-that-pages-are-layers-and-order-of-layers-is-reversed-order-of-pages)
open pdf so that pages are layers and order of layers is reversed order of pages - Cattleya - 09-06-2023
From time to time I use GIMP 2.10.8 for creating animated .gif-files from .pdf files so that when viewing the .gif-file every two seconds another page of the document is visible.
When importing the .pdf-file and hereby selecting "Open pages as layers" each page of the .pdf-file is a layer on its own.
The problem is:
Assume the .pdf-file has n pages.
After importing:
Layer 1 has name "1" and shows page 1 of the document.
Layer 2 has name "2" and shows page 2 the document.
...
Layer n-1 has name "n-1" and shows page n - 1 of the document.
Layer n has name "n" and shows page n of the document.
When exporting this as .gif-file, then the animation starts with page n of the document and ends with page 1 of the document.
I. e., the animation shows the pages of the document in reversed order.
Thus, for the .gif-animation to begin with page 1 of the document and to end with page n of the document, reversing the layer order before exporting is needed.
By now, after importing the .pdf-file, I click "Layer" - "Stack" - "Reverse Layer Order" and I get:
Layer 1 has name "n" and shows page n of the document.
Layer 2 has name "n-1" and shows page n - 1 of the document.
...
Layer n-1 has name "2" and shows page 2 the document.
Layer n has name "1" and shows page 1 of the document.
When exporting this as .gif-file, then the animation starts with page 1 of the document and ends with page n of the document.
Question:
Is there a possibility to have the layer order reversed automatically at the time of importing the .pdf-file, without the need of doing so much clicking?
RE: open pdf so that pages are layers and order of layers is reversed order of pages - rich2005 - 09-06-2023
(09-06-2023, 06:59 PM)Cattleya Wrote: From time to time I use GIMP 2.10.8 for creating animated .gif-files from .pdf files so that when viewing the .gif-file every
.....snip....
Question: Is there a possibility to have the layer order reversed automatically at the time of importing the .pdf-file, without the need of doing so much clicking?
The best way is to upgrade from Gimp 2.10.8 to the latest 2.10.34 I am not sure when the reverse page order option came in but it has been there for a while. Had to dig out a 2.10.8 appimage to check
[attachment=10334]
Otherwise, reverse the page order before opening in Gimp
The usual utility is PDFtk see; https://www.pdflabs.com/tools/pdftk-the-pdf-toolkit/ command line pdftk myfile.pdf cat end-1 output myfilereversed.pdf
or there are on-line utilities such as https://pdfux.com/reverse-pages-pdf/
RE: open pdf so that pages are layers and order of layers is reversed order of pages - Krikor - 09-07-2023
(09-06-2023, 08:41 PM)rich2005 Wrote: [...]I am not sure when the reverse page order option came in but it has been there for a while. [...]
This option is already present in version 2.10.28 :-)