codex-pdf
Beta · OSS
Cloud
Structured PDF extraction API that turns complex files into consistent JSON.
Open source · API-first · detection-only preflight
PDF preflight, detection-only.
lintPDF inspects your files against 500+ checks — fonts, color spaces, images, transparency, overprint, page geometry, ink coverage, packaging dielines, and barcodes — plus a 91-check PDF/X-4 conformance suite (ISO 15930-7). It finds problems but never modifies your PDF: your originals stay byte-for-byte identical.
AGPL-3.0 · 500+ checks · PDF/X-1a · PDF/X-3 · PDF/X-4 · PDF/A · GWG 2022
How it works
From upload to actionable report
lintPDF answers one question, headlessly: is this PDF print-ready, and if not, exactly what's wrong and where? It reports the findings — it never touches your file.
01
Submit your file
POST a PDF (or EPS, PostScript, TIFF, JPEG, PNG — converted internally) and pick a ruleset. One request to submit, one to fetch the report.
02
Preflight
lintPDF runs 500+ checks across fonts, color, images, transparency, geometry, and packaging — plus the PDF/X-4 conformance suite. Detection-only: your file is never modified.
03
Get the report
Findings come back as JSON, XML, or a white-labeled PDF report — each with page and location data so an operator sees exactly what's wrong and where.
04
Review & share
Render findings in the viewer, mint share links, and fire webhooks when a report is ready. Import upstream PitStop / callas / Acrobat reports too.
Everything PDF preflight needs
Built for web-to-print platforms, packaging houses, and publishing workflows that demand precision without lock-in.
Detection-only — never mutates your PDF
lintPDF reads the file and reports what's wrong; it never writes. Your originals stay byte-for-byte identical — no silent fixes, no re-distillation, no quietly-changed metadata. Zero risk of file damage.
500+ checks + PDF/X-4 conformance
Fonts, color spaces, images, transparency, overprint, page geometry, ink coverage (TAC), packaging dielines, and barcode grading — plus a dedicated 91-check PDF/X-4 conformance suite (ISO 15930-7). Every detail that matters for print.
Rulesets & conditional rules
Pre-built profiles for GWG Sheetfed, GWG Digital, PDF/X-1a, PDF/X-3, PDF/X-4, PDF/A, and packaging workflows. A conditional rule engine lets you build dynamic rulesets with the exact pass/fail logic you need.
Placement-aware image resolution
Effective DPI is measured at each image's actual rendered size on the page — not the declared resolution. Catches images that look fine at 300 DPI but print blurry because they've been scaled up.
API-first, with imports & webhooks
POST a file, GET the report as JSON, XML, or a white-labeled PDF. Already running PitStop, callas pdfToolbox, or Acrobat Preflight? Import their XML/JSON reports. Webhooks fire the instant a report is ready — no polling.
Self-host or hosted
AGPL-3.0 open source you can run on Docker or Railway, or use managed Print With Synergy hosting — the same preflight engine, managed and metered. Built on codex-powered extraction, so every check reads the same document facts.
Simple, usage-ready pricing
Run preflight as a managed hosted add-on, or self-host the open source for free.
Lint Preflight
Hosted add-on $99 /month
adds to the Codex à la carte base · or self-host free (AGPL-3.0)
Start with lintPDF- 500+ preflight checks + the 91-check PDF/X-4 conformance suite
- Pre-built rulesets: GWG Sheetfed/Digital, PDF/X-1a, PDF/X-3, PDF/X-4, PDF/A
- JSON, XML, and white-labeled PDF reports with page + location data
- Import upstream PitStop, callas pdfToolbox, and Acrobat reports
- Detection-only: your files are never modified
Open source · managed hosting
Independent tools. Pick the ones you need.
A toolkit of focused, standalone PDF utilities — extraction, preflight, viewing, assembly, imposition planning, and an asset store. Each one plugs into the prepress workflow you already run. Use the open source yourself, or let us host any single tool for you on work.withsynergy.io.
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