https:\/\/www.gimp.org<\/a><\/p>\n\n\n\nNext, when you go to open a PDF using Gimp, you need to decide whether to open its pages as separate images or as a group of layers, which are portions of a single image.<\/p>\n\n\n\n
This choice makes a big difference. If you plan to export the modified document as a PDF, you need to open it with the \u201cOpen pages as layers\u201d option, which is the default. Once the document is open, you should see each page displayed as a layer in Gimp\u2019s layers panel. If you don\u2019t, try selecting Windows -> Dockable Dialogs -> Layers and it should appear. Don\u2019t be surprised when a 100-page PDF ends up with 100 layers. That\u2019s the way it works.<\/p>\n\n\n\n
Select your file (e.g., Win_at_Sudoku.pdf) by selecting Open\u2026 under the File menu, selecting the PDF you want to open and then clicking on Import at the bottom right. Alternately, you can go directly to the File -> Open as layers<\/strong>\u2026 option and choose the PDF file.<\/p>\n\n\n\nIn the panel that opens, you can change the page size and select the page range or just go with the defaults, which select all pages using 700×925 pixels. Then click on \u201cImport\u201d at the bottom right.<\/p>\n\n\n\n
In the Layers panel, you will then see a list of the layers with small images of each one and \u201ceye\u201d icons on the left of each layer that controls whether the layers are visible, though the active (first) page will be the one that is displayed.<\/p>\n\n\n\n
Making changes<\/strong><\/h3>\n\n\n\nTo work on a single page, click on the image of that layer from the layers panel to make it the active layer and click on (sometimes referred to as \u201cunclicking\u201d) the eye icons for the other images so that they are no longer visible. You will then be able to draw on the selected page or add text to it. If you add text, you will be creating a new layer, but you can to use the \u201cMerge visible layers\u201d option to turn the two or more layers back into a single layer when you are ready. Since the other layers should not be visible at that time, they will not be affected.<\/p>\n\n\n\n
Also note that if you don\u2019t merge layers of text that you add they will end up as separate pages when you export your modified PDF.<\/p>\n\n\n\n
Removing pages<\/strong><\/h3>\n\n\n\nYou can remove pages in any of three ways. You can make them invisible before you save the new PDF; you can select multiple pages (and no others) and use the \u201cmerge visible pages\u201d options to reduce them to only the first page in the list; you can simply click on them and select \u201cdelete layer\u201d.<\/p>\n\n\n\n
Adding pages<\/strong><\/h3>\n\n\n\nYou can add pages to your document by adding layers and sliding them into the proper position in the document by clicking on them and then using the up and down tools shown at the bottom of the layers panel to move them into the correct location.<\/p>\n\n\n\n
You can add text and images to new layers. Just remember to have no other pages visible when you merge the added layers and the associated text layers.<\/p>\n\n\n\n
Saving your changes<\/strong><\/h3>\n\n\n\nWhen you are ready to export the modified file, make sure that all of the layers you want to retain are visible (eye icons displayed) and select File -> Export As\u2026<\/strong> using .pdf<\/strong> as the file extension for your new document. As explained earlier, if you want to omit any pages, make sure they are not visible by clicking on (\u201cunclicking\u201d) the eye icon. Make sure you export with \u201clayers as pages\u201d so you don\u2019t end up with a single page (all pages merged into one). Select these options for the export:<\/p>\n\n\n\n