This converter uses Mozilla PDF.js to read each page's existing text layer on your device. It keeps page order and reported line endings, then gives you one editable plain-text result. Images, fonts, columns, tables, and visual formatting are not preserved in TXT output.
There is an important boundary: a digital PDF stores characters that software can select and search. A scan may store only a photograph of a page. Extracting the first kind is text parsing; reading the second requires optical character recognition. This tool does the first job only.