pdfjs-dist vs pdf-parse when you care about pages, not just a blob of text

While building ReadAhead (an AI reading assistant), I had to choose how to read PDFs. The shortlist came down to pdfjs-dist vs pdf-parse.

They are not interchangeable — they solve different problems.

pdfjs-dist is what Firefox uses under the hood: rendering, pages, text with structure, workers in heavier setups. If you need “what is on page 12” or coordinates for highlights, this is the tool.

pdf-parse is closer to “give me all the text in one string.” Low ceremony, quick scripts, MVPs. It leans on an older PDF.js lineage and is not where I would bet a long-term product in 2026.

For anything where page boundaries or layout feed the model — summarizing the next page, anchoring citations, showing the real page beside AI output — pdfjs-dist wins.

For a one-off “rip text and throw it at an API” script, pdf-parse can still be fine. Just know what you are trading away.

The decision was not “which library is better” but which shape of data the product actually needs.