Lint

API-first · PDF + plate / tooling preflight · detection-only

PDF preflight, detection-only.

Lint inspects your files against 500+ checks — fonts, color spaces, images, transparency, overprint, page geometry, ink coverage, packaging dielines, embellishments, and barcodes — plus a 91-check PDF/X-4 conformance suite (ISO 15930-7). It also preflights plate & tooling files (TIFF / LEN separations), compares a plate set against the approved 1-up, re-validates after prep with a spec-drift diff, and scores production-readiness. It finds problems but never modifies your file: your originals stay byte-for-byte identical.

Try the live demo Start free — hosted SaaS

500+ checks · PDF/X-1a · PDF/X-3 · PDF/X-4 · PDF/A · GWG 2022

How it works

From upload to actionable report

Lint 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

Lint 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

Lint 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.

Plate & tooling preflight

Preflight raster plate / tooling files (TIFF + LEN separations) over the same engine — resolution, minimum dot, registration, dimension agreement, and combined ink coverage. Compare a plate set against the approved 1-up, with or without AI assistance.

Re-validate, spec-drift & readiness score

After prep, re-validate the file and diff it against the original to catch spec drift, generate deterministic notes-to-prepress annotations, and roll everything into a single production-readiness score — so you know when a job is truly ready to print.

Self-host or hosted

Run it 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 for free.

Lint Preflight

Hosted add-on
$99 /month

adds to the Codex à la carte base · or self-host free

Start with Lint
  • 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

Self-hosted · 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. Self-host any tool, or let us host it for you on host.withsynergy.io.

Collate

Beta Cloud

Objective file-comparison engine — measured coverage and geometry differences for plate ↔ 1-up and document ↔ document, never a verdict.

Visit site Cloud hosted

Trove

Beta Cloud

Content-addressed digital-asset plane — versioned blobs, a presigned data plane, and on-prem agent recall.

Visit site Cloud hosted

Atlas

Coming soon Cloud

The print-data integration hub — canonical jobs, orders, and customers kept in sync across your MIS, ERP, and prepress tools.

Visit site Cloud hosted

Compile

Beta Cloud

The deterministic PDF writer — trapping, marks, imposition, soft-proof, and white-underbase as audit-logged producers.

Visit site Cloud hosted