A quick guide for Affinity Photo and importing / loading / adding Photoshop brushes in ABR format into Affinity Photo. You can use the most recent versions of ABR and not the earlier format files. They are imported / loaded / added via the view and studio command 'brushes' panel. Go to the brushes panel and then go to the right side menu and use the import command to import the ABR and browse for the files. You can find many presets on the web to access for free.
If the application doesn't like the format, you will see a message telling you so. If you have Photoshop, you should be able to open them and then re-export them for use with the Serif's app.
Once imported, You will now see the ABR file in your panel. The category for the presets will be the original file name but you can always use the rename feature in the right side menu to give it a more useful name. You can also delete the category via the same right side menu.
They will be displayed with their size and a rough idea what they will look like when applied in default. Note that the sizes are not the actual sizes, the imported size seems to be by default set to 25. However the imported presets are often 1000 or 2000 px etc, so if you want to set them to that, you can but has to be manually for each of them. I wish there was a default import size setting or just a feature to store the original size. To change the size, double click the preview in the panel and tweak the size as well as the spacing etc in the editor.
Once you have changed the size or any of the other settings and closed the editor panel, you will have your updated stroke. Once you have added the strokes, simply apply them using the standard tools as you would with any of the other presets supplied with the application. Select the paint brush tool in the tools and select the required preset and set the color etc and apply.
You can tweak all the settings for your imported files via the panel and double clicking the entry. If you want the current design, I would suggest right click and select duplicate so you now have a new stroke to work with and tweak as well as the original. Go to the dynamics etc tab and modify the scattering, hue dynamics, rotation dynamics etc as well as adding texture and sub to your new stroke
You can also export them via the same menu and the export command saves the set as a afbrushes format file for possible future re-import into the application. Goto the panel and select the presets you don't want and delete them and then use the export command. It should be noted that nothing outside of Affinity products supports this format (as far as I know)