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Auto tagging

Auto tagging allows to automatically add tags to bookmarks based on predefined rules. This makes categorizing commonly bookmarked websites easier and faster.

Auto tagging rules can be defined in the profile settings. Each rule maps a URL pattern to one or more tags. For example:

youtube.com video
reddit.com/r/Music music reddit

When a bookmark is created or updated, the URL of the bookmark is parsed to extract the hostname, path, and query string. These components are then compared against the patterns defined in the auto tagging rules. If all components match, the tags associated with the rule are added to the bookmark. Both the bookmark form in the web interface and the browser extension will show a preview of the tags that will be added based on the auto tagging rules.

The URL matching works like this:

  • Hostname Matching: The hostname of the bookmark URL is compared to the hostname in the rule. If the rule does not specify a subdomain, it matches all subdomains. For example, a rule with youtube.com will match both www.youtube.com and m.youtube.com. If a subdomain is specified in the rule, it will only match that subdomain. For example, a rule with gist.github.com will only match gist.github.com.
  • Path Matching: The path of the bookmark URL is compared to the path in the rule. If the rule does not specify a path, it matches all paths. For example, a rule with reddit.com will match reddit.com/r/music, reddit.com/r/gaming, etc. If a path is specified in the rule, it will only match that path and all its subpaths. For example, a rule with reddit.com/r/music will match reddit.com/r/music, reddit.com/r/music/new, etc.
  • Query String Matching: The query string parameters of the bookmark URL are compared to those in the rule. If the rule does not specify any query string parameters, it matches all query strings. If the rule specifies a query string it will only match if the bookmark URL contains all the specified query string parameters with their respective values.

Note that URL matching currently does not support any kind of wildcards. Rule matching only works based on the URL, not on the content of the website or any other aspect of the bookmark.

Example

Consider the following auto tagging rule:

reddit.com/r/Music music reddit

When adding a bookmark for a URL like https://www.reddit.com/r/Music/comments/..., the auto tagging mechanism will:

  1. Parse the URL to extract the hostname (www.reddit.com), path (/r/Music/comments/...), and query string (none).
  2. Match the hostname against the pattern. The domain reddit.com matches. Since the rule does not specify a subdomain, it also matches www.reddit.com.
  3. Match the path against the pattern. The path /r/Music also matches the nested path /r/Music/comments/....
  4. Match the query string. Since the rule does not specify a query string, it matches all query strings.
  5. The tags music and reddit will be added to the bookmark.