Can JSON feed contract tests?

Yes — snapshot tabular payloads extracted from golden PDFs, then diff against API responses. Keep PDFs out of CI logs if they contain PII.

Pipe JSON through ajv or pydantic after extraction; PDF layout drift will surface as validation errors — fix data, not the schema silently.

Complex PDFs may flatten oddly. Split source PDFs per table region with [PDF Split](/tools/pdf-split) before extraction.

Compared to invoice posts?

Same [PDF to JSON](/tools/pdf-to-json) tool — this article focuses on API parity testing rather than AP postings.

PDF to JSON

API

Testing

2026-05-03

6 min read

Parse PDF to JSON exports into fixtures, diff API payloads in CI — scrub PII before committing.

Let validation fail loudly when PDF layout changes — fix data, do not loosen schemas silently.

Free Tool

Table extracts to JSON for fixtures, schema tests, and API parity checks.

100% private — runs in your browser

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Ops teams: extract statement grids in-browser for Python, SQL, or Sheets — contracts often forbid random upload sites.

Irregular supplemental tables → JSON for pandas.read_json workflows — reproducible analysis without shipping cohort PDFs to third-party extractors.

Statements pack several grids on one file — export each locally, concatenate in pandas with less typing than manual re-entry.