Some test text!

Text searchkeyboard_arrow_down

Search for text in a PDF

To search for text in a PDF using regular expression.

PDFDoc doc = new PDFDoc(filename);
TextSearch txt_search = new TextSearch();
int mode = TextSearch.e_whole_word | TextSearch.e_page_stop;
String pattern = "";

//use regular expression to find credit card number
mode |= TextSearch.e_reg_expression | TextSearch.e_highlight;
String new_pattern = "\\d{4}-\\d{4}-\\d{4}-\\d{4}"; //or "(\\d{4}-){3}\\d{4}"

//call Begin() method to initialize the text search.
txt_search.begin(doc, pattern, mode, -1, -1);
TextSearchResult result =;

Search PDF files for text
Full code sample which shows how to use TextSearch to search text on PDF pages using regular expressions.

Get the answers you need: Support


Free Trial

Get unlimited trial usage of PDFTron SDK to bring accurate, reliable, and fast document processing capabilities to any application or workflow.

Select a platform to get started with your free trial.

Unlimited usage. No email address required.

PDFTron Receives USD$71 Million Growth Investment Led By Silversmith Capital Partners

Learn more