The Auto Build Bookmarks feature can totally automate the creation of bookmarks in your PDFs, and with very little effort greatly enhance the usability of the PDFs you publish. Use it to auto-generate bookmarks based on the font styles (headings, chapters, etc.) and the layout used in your PDFs. You can also use it to build bookmarks based on the textual and numerical content of the PDF files by using the text masking and wildcards features.
Tip: With Nitro PDF you can generate bookmarks automatically from your Word and PowerPoint based on the heading styles they contain. See the Create PDF section of the user guide.
There are five text properties that can be used when choosing the properties that the bookmarks will be created from. Combining the various properties will create bookmarks that only match the criteria of the combined properties. If the text in the document does not meet the requirements of the properties, then no bookmarks will be created.
Text Masking gives you more advanced tools that let you include or exclude content as bookmarks based on the wildcards you specify. Text masking is particularly useful when there are few defining bookmark properties-when the PDF file has not been structured well or formatted consistently-or when you want to filter out bookmarks based on their text-based content.
The "." matches one instance of any character.
Example: Entering the expression "P.F" into the Text Mask field would create a bookmark from any line of text that contained "PDF, PeF, PdF," etc.
The "^" only creates a bookmark if the specified text appears at the very start of the line.
Example: Entering the text "^abc" will only create a bookmark if the line started with "abc". If a line of text started with "1.0 abc" no bookmark would be created.
The "$" only creates a bookmark if the specified text appears at the very end of the line. If you only wantto create bookmarks from lines that only contain the exact text you specify, use both the "^" and "$" characters.
Example: Entering the text "abc$" will create a bookmark only from text with lines ending with "abc", so ".xyzabc" would generate a bookmark from that line, but "abcxyz" would not.
Any lines containing characters inside the "[ ]" will generate a bookmark. Characters can be specified literally, or as a range of characters.
Example: "[abc]" will create bookmarks from any lines containing either a, b, or c. This is opposed to only creating a bookmark from text containing abc if "abc" is entered. "[a-dA-D]" will create bookmarks from lines containing any of the characters between a-d (that is, a, b, c and d), in both lower- and upper-case.
Any text containing characters inside the "[ ]" and after the "^" will not be turned into bookmarks. This feature is very handy when applied with in conjunction with other bookmark selection properties to stop unwanted bookmarks from being created. Please note that conversely this means that any other text not in the "[ ]" will be considered as potential bookmark material. Therefore you should consider using another bookmark selection in conjunction with this one. If you really want to exclude numbers like 1.0 you would need to modify it to "[^0-9\.]. The "\" is explained below, and is needed because "." is a considered special character in text masking.
Example: Entering "[^0-9]" will still create bookmarks containing numbers if the text line contains any other character - 1.0 will be turned into a bookmark because it contains a ".".
The "\" character is used when you wish to actually match a special character, such as "." Or "$". These special characters are used in the Text Mask field to perform special text matching.
Example: Entering "\$" will search and create a bookmark from text on the document containing a "$", ignoring the normal "$" text mask command.
Use the "*" character to create bookmarks from more than one set of characters at the same time.
Example: Entering "a*b" will create bookmarks from any line of text containing either a and/or b.
Use the "+" character to create bookmarks from a set of characters arrayed in a certain order. Bookmarks can be created from the first character(s) before the "+", however, characters after the "+" can only be bookmarked if the characters before the "+" are also present.
Example: Entering "a+b" will create bookmarks from any line of text containing ab, aab, aaab¸ etc. Any text like ba, or cb, will be ignored.
Like the "+" character, the "?" character creates bookmarks from a set of characters arrayed in a certain order, but in this case, bookmarks can be created from characters before the "?" only if the proceeding characters are also present. The characters after the "?" can be used to create bookmarks, irrespective of whether characters before the "?" are present.
Example: Entering "a?b" will create bookmarks from any line of text containing ab, abb, or just b.
Allows characters to be grouped together and be combined with other special characters.
Example: "(a*b)$" will create bookmarks from lines of text containing either a and/or b, but only if these lines end with a or b.
Creates bookmarks from either one set of characters or another.
Example: Entering "a | b" into the Text Mask field will create bookmarks from lines of text containing either a or b.