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Preflight API

The Preflight API exposes deterministic technical analysis of print-ready PDF files.

It is responsible for extracting measurable production facts and identifying technical issues before manufacturing decisions are made.

Purpose​

The Preflight API helps answer questions such as:

  • Is this file suitable for print production?
  • Does it contain bleed?
  • Are the page dimensions correct?
  • Are fonts embedded?
  • Are there color space or resolution risks?
  • Does the file comply with technical expectations?

Its role is to turn uploaded PDFs into structured technical data.

Input​

The core input is a document file, typically a PDF.

Associated metadata may also be provided, such as:

  • declared trim size
  • product type
  • intended binding
  • expected color workflow
  • production profile

These declarations help contextualize the analysis.

Processing Stages​

The Preflight API may include stages such as:

  • file ingestion
  • metadata extraction
  • page geometry analysis
  • bleed and trim inspection
  • color profile inspection
  • image resolution checks
  • font inspection
  • total ink coverage checks

These stages rely on deterministic tooling rather than subjective interpretation.

Output​

A preflight response typically includes:

  • file facts
  • page count
  • dimensions
  • color information
  • image metrics
  • font status
  • issue list
  • warnings
  • pass or fail style indicators

This output can be used directly by interfaces or passed into other engines.

Deterministic Analysis​

A core design goal of the Preflight API is deterministic repeatability.

Equivalent files analyzed under the same rules should generate consistent technical output.

This is essential for trust and operational debugging.

Severity Model​

Issues may be classified into categories such as:

  • informational
  • warning
  • error
  • blocking issue

This allows downstream systems to distinguish between advisory findings and true manufacturing blockers.

Role in the Platform​

The Preflight API is upstream of several major platform decisions.

Its output may feed:

  • Production Intelligence
  • Compatibility Engine
  • Matchmaker
  • user-facing validation reports
  • correction workflows

Without reliable preflight analysis, downstream routing becomes less trustworthy.

Typical Use Cases​

Typical use cases include:

  • validating uploaded files before quotation
  • generating technical production reports
  • checking print readiness before order creation
  • powering assistant explanations
  • supporting admin review workflows

Long-Term Evolution​

Future capabilities may include:

  • profile-specific validation presets
  • binding-aware checks
  • edition intent detection
  • automated correction suggestions
  • fix-and-retry workflows
  • partner-specific preflight rules

These features would turn the Preflight API into a deeper production assurance layer.