The PDF is where text goes to become awkward. It prints beautifully and copies terribly, and half the difficulty of summarizing one is just getting the words out. The good news: there are only three cases, and each has a clean path.
01Case one: the text selects
Open the PDF and try to highlight a sentence. If it selects, the file carries a real text layer, and the job is simple: copy the part you need and paste it into a summarizer, including the free tool on this site. Copy section by section rather than all at once; PDFs interleave headers, footers, and figure captions into copied text, and smaller pieces make that noise easy to spot and delete.
02Case two: the PDF is a scan
If nothing selects, you have images of pages, not text, and no summarizer can read it as-is. It needs optical character recognition first. Modern OCR is built into more tools than most people expect: recent versions of Adobe Acrobat, macOS Preview via copy on recent versions, Google Drive's open-with-Docs trick, and most scanner apps. Run the OCR, then check one paragraph by eye before trusting the rest, because OCR errors compound silently in a summary.
03Case three: the PDF is very long
A 200-page document does not want one summary; it wants a layered one. Split it along its own structure: chapters, numbered sections, or exhibit boundaries, never arbitrary page ranges. Summarize each unit to a few lines, then summarize the collection. This two-level approach is how you avoid the classic long-document failure, where the middle of the file quietly falls out of the summary.
04Whatever the case, keep the trail
Note the page range next to each piece of your summary. It feels like bureaucracy until the first time someone asks where a number came from and you can answer in five seconds. For contracts and reports that other people will act on, a summary line without a page reference is a claim without a source.
Why does my copied PDF text have broken line breaks?
PDFs store text by position, not by paragraph, so copies inherit hard breaks at line ends. Paste into any editor and rejoin the lines, or paste into a summarizer anyway; the meaning usually survives the formatting.
Can I summarize a password-protected PDF?
Only if you can legitimately open it. Once it is open with the password, text extraction and OCR work normally. Do not attempt to strip protection from documents you do not have rights to.
What about tables and charts inside the PDF?
Tables copy poorly and charts not at all. Pull the two or three numbers that matter into your text by hand before summarizing, and reference the figure by page instead of trying to reproduce it.
Summarizing at volume, not one page at a time?
Summarize Pro batches PDFs, papers and reports, every key claim cited to its source page, exports to Word or Excel. The free tool is for one page; Pro is for the pile.