Open-source PDF tools · hosted or self-host

Open-source PDF tools for print & prepress.

Focused, standalone utilities for extraction, preflight, viewing, assembly, and imposition planning. Each one plugs into the Esko AE / HYBRID Cloudflow workflow you already run — adopt one or several. Self-host the open source, or use managed hosting.

Start free — managed hosting Self-host on GitHub →

No card for the free tier · AGPL-3.0 tools · deploy in minutes

How it works

Independent tools that drop into your workflow

Adopt one tool or several — each runs standalone over a simple REST API and plugs into your existing Esko AE / HYBRID Cloudflow automation.

Upload & extract

codex-pdf turns every file into normalized facts — fonts, color, images, dielines, barcodes — the source of truth the other tools read.

Preflight & decide

lint-pdf runs 500+ checks plus a PDF/X-4 conformance suite, emitting located findings you can gate on.

Produce

compile-pdf assembles and rewrites PDFs — deterministic, audit-logged output with SHA-256 lineage on every operation.

Review & ship

lens-pdf renders separations, TAC, and overlays for human review — embeddable in any host.

Focused tools, not a platform

Built for web-to-print shops, packaging houses, and prepress teams that want precise, composable tools without lock-in.

Plugs into your workflow

Every tool is API-first and self-hostable — call it over REST or a CLI, or wire it into an Esko AE / HYBRID Cloudflow hot folder. Adopt one or several; no lock-in.

Single extraction layer

codex-pdf extracts every PDF fact once — fonts, color, images, OCGs, dielines, barcodes — and the other tools read from it. No double work.

500+ preflight checks

lint-pdf inspects against 500+ checks plus a PDF/X-4 conformance suite (ISO 15930-7), GWG profiles, and bring-your-own PitStop/callas imports.

Deterministic assembly

compile-pdf assembles and rewrites print-ready PDFs — byte-deterministic output with SHA-256 lineage so every transform is reproducible and auditable.

Prepress-grade viewer

lens-pdf renders per-channel separations, TAC heatmaps, layer toggles, a densitometer, and annotation overlays — embeddable in any host.

Self-host or hosted

Every tool is AGPL-3.0 OSS you can run on Docker Compose or Railway. Or skip ops entirely with managed hosting — same tools, managed.

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.