A free and simple PDF highlighting tool that doesn't collect your data.
PDF Highlighter is a free tool designed to highlight text within a user-provided PDF file, based on search terms specified by the user. Its sole function is to generate a modified PDF, visually marking all instances of those search terms. PDF Highlighter operates entirely within the user's web browser. No data – including the submitted PDF, the search terms, or the resulting highlighted PDF – is transmitted to or stored on any external server. The user retains full control and responsibility for the data processed using this tool.