Why Extract Text from a PDF?
PDF documents are designed for consistent visual presentation across devices, but that formatting often makes it difficult to reuse the text content. You might need to copy a few paragraphs into an email, extract data for a spreadsheet, quote passages in a research paper, or migrate content from an old PDF into a new document format. Manually selecting and copying text from a PDF reader can be tedious, especially with multi-page documents where formatting issues cause missed line breaks, merged words, or garbled characters. A dedicated text extraction tool solves these problems by reading the underlying text layer of the PDF and presenting it as clean, copyable plain text.
How PDF Text Extraction Works
ConvertKr uses PDF.js — the same open-source rendering engine that powers Firefox's built-in PDF viewer — to read the text content layer of your document. Each PDF page can contain multiple types of content: vector graphics, raster images, and text objects. The extraction process specifically targets the text objects, reading each character along with its position on the page. The tool then assembles these characters into readable text, preserving the natural reading order. Text from each page is clearly separated with page markers so you can easily navigate through the output.
Text-Based PDFs vs. Scanned PDFs
It is important to understand the difference between text-based PDFs and scanned PDFs. A text-based PDF — created by exporting from Word, Google Docs, LaTeX, or any other application — contains actual text characters that can be read and extracted programmatically. A scanned PDF, on the other hand, contains photographs of pages taken by a scanner or camera. Even though you can see text in a scanned PDF, the file actually contains images, not text data. This tool works with text-based PDFs. If your PDF was created by scanning paper documents, you will need OCR (Optical Character Recognition) software to convert the images into text first.
Formatting Considerations
The extracted text is plain text without any formatting such as bold, italic, font sizes, or colors. Complex layouts like multi-column documents, tables, and sidebars may not be perfectly represented in the linear text output because PDF text objects do not always follow a simple top-to-bottom, left-to-right order. For most standard documents — reports, articles, books, contracts, and letters — the extraction produces clean, accurate text that closely matches the reading experience. For documents with complex layouts, you may need to do some minor manual cleanup after extraction.
Privacy and Security
All text extraction happens entirely within your web browser. Your PDF file is read into memory using the JavaScript FileReader API, processed by PDF.js, and the extracted text is displayed on screen. At no point does any data leave your device. There are no network requests, no server uploads, and no cookies or tracking related to your files. This makes the tool safe for confidential documents, legal files, financial records, medical information, and any other sensitive content. Once you close or refresh the browser tab, all data is cleared from memory.