Download a copy of every page your bookmark in Pinboard, as images.
You'll need to install a couple of modules from CPAN:
cpanm IO::Interactive Tie::Persistent WWW::Pinboard
Screenshots of web pages are made using wkhtmltoimage, which you'll need to install.
If you're using a headless Linux VM you might not have any nice fonts installed. Try the urw-fonts package from your package manager.
Configure your Pinboard API token in config.yaml then use with:
perl fetch-bookmarks --verbose
The script keeps track of where it got to, so can be stopped and restarted any time. It will also retry failed fetches on the next run.
You can run it as a one-off, but ideally run it daily on a cron to archive any new bookmarks you add.
Edit config.yaml to set your log and output folders, and then add something like this to your crontab:
0 1 * * * perl /usr/bin/fetch-bookmarks
See the Issues page.