Some things should be boring. PDF generation is one of them.

The last PDF service you'll ever buy.

Rename the customer, break the total, or rewrite the line items. The PDF below is generated from exactly that JSON through the docfuchs API.

Public demo: Do not enter real personal, confidential, or secret information. How the demo processes data

template.typ

This Typst template is rendered with the JSON on the right. Public previews always receive an injected DEMO stamp.

DEMO enforced

#import "default-data.typ": default-data

#let data = if "data" in sys.inputs { json(bytes(sys.inputs.data)) } else { default-data }
#let catalogue = data.at("catalogue", default: (:))
#let supplier = data.at("supplier", default: (:))
#let products = data.at("products", default: ())
#let is-draft = data.at("isDraft", default: false)

#let category-assets = (
  controls: "assets/category-controls.png",
  sensing: "assets/category-sensing.png",
  networking: "assets/category-networking.png",
  power: "assets/category-power.png",
  cabinet: "assets/category-cabinet.png",
  cabling: "assets/category-cabling.png",
  drives: "assets/category-drives.png",
  services: "assets/category-services.png",
)

#let product-visual(product) = {
  let category = product.at("category", default: "")
  let asset = category-assets.at(lower(category), default: none)
  let label = if category == "" { "NO IMAGE" } else { category }

  block(
    width: 26mm,
    height: 26mm,
    fill: rgb("#eef4f1"),
    radius: 2pt,
    clip: true,
  )[
    #if asset == none {
      align(center + horizon, text(size: 7pt, fill: rgb("#66736d"), weight: "bold", label))
    } else {
      image(
        asset,
        width: 100%,
        height: 100%,
        fit: "cover",
        alt: "Representative illustration for " + category,
      )
    }
  ]
}

#set page(
  paper: "a4",
  margin: (top: 16mm, bottom: 16mm, left: 14mm, right: 14mm),
  background: if is-draft {
    place(center + horizon, rotate(45deg, text(120pt, fill: rgb("#d7d7d7").transparentize(45%), weight: "bold")[DEMO]))
  },
  footer: context align(right)[#text(size: 8pt, fill: rgb("#66736d"))[#catalogue.at("edition", default: "") - Page #counter(page).display()]],
)
#set text(font: "Libertinus Sans", size: 9pt, fill: rgb("#17211d"))

#block(fill: rgb("#17211d"), inset: 16pt, radius: 3pt)[
  #text(fill: rgb("#9fd1b8"), size: 9pt, weight: "bold")[APPROVED BUYING CATALOGUE]
  #v(2mm)
  #text(fill: white, size: 30pt, weight: "bold")[#catalogue.at("title", default: "Catalogue")]
  #v(2mm)
  #text(fill: rgb("#d6e7df"))[
    #(catalogue.at("edition", default: "") + " / " + catalogue.at("owner", default: ""))
  ]
]

#v(7mm)
#grid(columns: (1fr, auto), align: (left, right), [
  Supplier: #supplier.at("name", default: "")
  #linebreak()
  Contact: #supplier.at("email", default: "")
], [
  #text(weight: "bold")[#supplier.at("terms", default: "")]
])

#v(7mm)
#grid(
  columns: (1fr, 1fr),
  gutter: 4mm,
  ..products.map(product => block(
    breakable: false,
    stroke: 0.45pt + rgb("#dbe3df"),
    inset: 8pt,
    radius: 3pt,
  )[
    #text(size: 8pt, fill: rgb("#22664b"), weight: "bold")[#product.at("category", default: "")]
    #h(1fr)
    #text(size: 8pt, fill: rgb("#66736d"))[#product.at("sku", default: "")]
    #v(2mm)
    #grid(
      columns: (26mm, 1fr),
      gutter: 3mm,
      align: (center, top),
      product-visual(product),
      [
        #text(size: 12pt, weight: "bold")[#product.at("name", default: "")]
        #v(1mm)
        #text(size: 8.5pt, fill: rgb("#4f5d57"))[#product.at("description", default: "")]
      ],
    )
    #v(3mm)
    #grid(columns: (1fr, auto), [
      Lead time: #product.at("leadTime", default: "")
    ], [
      #text(weight: "bold")[#product.at("price", default: "") #catalogue.at("currency", default: "EUR")]
    ])
  ])
)

data.json

This payload is sent directly to the render API. Changes show up in the PDF.

{
  "catalogue": {
    "currency": "EUR",
    "edition": "Q3 2026",
    "owner": "Sternwerk Musterbetrieb GmbH (fiktiv) – Demo-Einkauf",
    "title": "Industrial Automation Catalogue"
  },
  "isDraft": false,
  "products": [
    {
      "category": "Controls",
      "description": "Compact controller for machine-side orchestration, Modbus and OPC UA ready.",
      "leadTime": "14 days",
      "name": "Edge controller 4IO",
      "price": "690.00",
      "sku": "CTRL-EDGE-4"
    },
    {
      "category": "Controls",
      "description": "Expanded I/O controller with dual network uplinks and local buffering.",
      "leadTime": "14 days",
      "name": "Edge controller 8IO",
      "price": "980.00",
      "sku": "CTRL-EDGE-8"
    },
    {
      "category": "Controls",
      "description": "Dual-channel safety relay for guard doors and emergency stops.",
      "leadTime": "21 days",
      "name": "Safety relay module",
      "price": "340.00",
      "sku": "CTRL-SAFE-2"
    },
    {
      "category": "Sensing",
      "description": "Magnetic vibration sensor with trend-ready RMS and peak metrics.",
      "leadTime": "10 days",
      "name": "Vibration sensor",
      "price": "185.00",
      "sku": "SNS-VIB-M"
    },
    {
      "category": "Sensing",
      "description": "Rugged temperature probe for washdown environments.",
      "leadTime": "7 days",
      "name": "Temperature probe IP67",
      "price": "96.00",
      "sku": "SNS-TMP-IP67"
    },
    {
      "category": "Sensing",
      "description": "Stainless transmitter with M12 connector and factory calibration.",
      "leadTime": "12 days",
      "name": "Pressure transmitter 16 bar",
      "price": "225.00",
      "sku": "SNS-PRS-16"
    },
    {
      "category": "Networking",
      "description": "DIN-rail managed switch with redundant power input.",
      "leadTime": "14 days",
      "name": "Industrial switch 8-port",
      "price": "540.00",
      "sku": "NET-SW-8P"
    },
    {
      "category": "Networking",
      "description": "Managed switch for production cells with VLAN profiles.",
      "leadTime": "21 days",
      "name": "Industrial switch 16-port",
      "price": "890.00",
      "sku": "NET-SW-16P"
    },
    {
      "category": "Networking",
      "description": "Industrial temperature SFP+ module for backbone links.",
      "leadTime": "10 days",
      "name": "10G optical module",
      "price": "120.00",
      "sku": "NET-SFP-10G"
    },
    {
      "category": "Power",
      "description": "Compact DIN-rail power supply with status relay.",
      "leadTime": "7 days",
      "name": "24V PSU 10A",
      "price": "160.00",
      "sku": "PWR-24-10"
    },
    {
      "category": "Power",
      "description": "High-load power supply for cabinet modernization projects.",
      "leadTime": "14 days",
      "name": "24V PSU 20A",
      "price": "260.00",
      "sku": "PWR-24-20"
    },
    {
      "category": "Power",
      "description": "UPS buffer module for controlled PLC shutdown.",
      "leadTime": "21 days",
      "name": "24V buffer module",
      "price": "390.00",
      "sku": "PWR-UPS-24"
    },
    {
      "category": "Cabinet",
      "description": "Powder-coated industrial cabinet with mounting plate and plinth.",
      "leadTime": "28 days",
      "name": "Control cabinet 600x2000",
      "price": "1,480.00",
      "sku": "CAB-600-2000"
    },
    {
      "category": "Cabinet",
      "description": "Wide cabinet for drive and network retrofits.",
      "leadTime": "28 days",
      "name": "Control cabinet 800x2000",
      "price": "1,760.00",
      "sku": "CAB-800-2000"
    },
    {
      "category": "Cabinet",
      "description": "Thermostat-ready cabinet fan with replaceable filter mat.",
      "leadTime": "14 days",
      "name": "Filter fan IP54",
      "price": "145.00",
      "sku": "CAB-FAN-IP54"
    },
    {
      "category": "Cabling",
      "description": "Shielded M12 cable for sensor installations.",
      "leadTime": "5 days",
      "name": "M12 sensor cable 2m",
      "price": "18.00",
      "sku": "CBL-M12-02"
    },
    {
      "category": "Cabling",
      "description": "Shielded M12 cable for longer production-cell runs.",
      "leadTime": "5 days",
      "name": "M12 sensor cable 5m",
      "price": "26.00",
      "sku": "CBL-M12-05"
    },
    {
      "category": "Cabling",
      "description": "Oil-resistant Ethernet cable, cut to length, tested and labeled.",
      "leadTime": "7 days",
      "name": "Industrial Ethernet cable",
      "price": "4.60/m",
      "sku": "CBL-ETH-IND"
    },
    {
      "category": "Drives",
      "description": "Compact drive for conveyor and pump applications.",
      "leadTime": "21 days",
      "name": "VFD 0.75 kW",
      "price": "410.00",
      "sku": "DRV-0K75"
    },
    {
      "category": "Drives",
      "description": "General-purpose drive with STO and fieldbus option slot.",
      "leadTime": "21 days",
      "name": "VFD 2.2 kW",
      "price": "690.00",
      "sku": "DRV-2K2"
    },
    {
      "category": "Drives",
      "description": "Heavy-duty drive for high-inertia machinery.",
      "leadTime": "28 days",
      "name": "VFD 7.5 kW",
      "price": "1,540.00",
      "sku": "DRV-7K5"
    },
    {
      "category": "Services",
      "description": "Inspection report with photos, wiring checks, and sign-off evidence.",
      "leadTime": "10 days",
      "name": "Panel QA report",
      "price": "490.00",
      "sku": "SVC-PANEL-QA"
    },
    {
      "category": "Services",
      "description": "Factory acceptance test over video with recorded checklist.",
      "leadTime": "10 days",
      "name": "Remote FAT session",
      "price": "1,200.00",
      "sku": "SVC-FAT-REMOTE"
    },
    {
      "category": "Services",
      "description": "Updated drawings, terminal plans, bill of materials, and serial exports.",
      "leadTime": "14 days",
      "name": "As-built documentation",
      "price": "1,850.00",
      "sku": "SVC-DOC-ASBUILT"
    }
  ],
  "supplier": {
    "email": "katalog@kometenbauteile.invalid",
    "name": "Kometenbauteile Lieferbund Ltd. (fiktiv)",
    "terms": "Demo framework contract DEMO-FC-0004"
  }
}

PDF preview

Rendered from the JSON on the left. Not reconstructed, not painted.

Not rendered yet

PDFs you can poke

Some things should be boring. PDF generation is one of them.

docfuchs turns JSON and Typst templates into reliable PDFs through a clean API. Invoices, work orders, reports, and compliance documents - generated without document drama, printer folklore, or that one spreadsheet nobody dares to open.

Try the live editor See the API

POST /api/render/business/catalogue/v1
Authorization: Bearer sk_live_quietly

{
"data": {
"customer": "Acme Procurement",
"total": 18420,
"approved_by": "Someone wearing a lanyard"
}
}

200 OK
Content-Type: application/pdf

Typst templatesVersioned and reviewable

JSON inputThis exact payload is rendered

PDF outputNo screenshot, no trick

Time for stats

Measured, not guessed.

Local reference run on this machine with the business invoice template, release build, and full CPU concurrency.

Hardware AMD Ryzen 9 5950X, 16 cores / 32 threads, 62 GiB RAM

37,599 PDFs in 30.02 seconds

1,252.30 PDFs per second

800 µs average per PDF

32 parallel workers

Throughput depends on template complexity, fonts, assets, hardware, and render concurrency.

API-first, boardroom-safe

Drop it behind your product, ERP, CRM, or that one internal tool everyone pretends is temporary.

Template control

Layouts live as code, can be reviewed, and stay versioned per customer or document family.

Predictable renders

JSON in, PDF out. Schema validation catches bad data before it becomes a finance incident.

Operationally boring

Bearer auth, health checks, render timeouts, and concurrency limits. The exciting part is your product.

Small surface area

Seven endpoints. API docs, obviously.

Health, templates, schema, examples, source, and render. Most PDF pipelines do not need a maze.

Open API docs

GET/api/health
GET/api/templates
GET/api/templates/{name}/schema
GET/api/templates/{name}/example
GET/api/templates/{name}/source
POST/api/render/{name}
POST/api/render-source

On Prem, Dockerized, or native

Run it the way your business runs software.

docfuchs is not a black-box subscription held together by hope. You get a serious PDF pipeline, with editor or without, with support, and with a deployment model that fits your organization.

On Prem

For documents and data that need to stay inside. Behind your reverse proxy, under your processes, in your environment.

Scalable, with support

Render timeouts, concurrency limits, and clear operational boundaries. Plus support when the PDFs are not just nice to have, but production-critical.

Dockerized or native

Ship it as a container or install it natively. Add the template editor for teams that want control, or run the lean API without a UI.

Make your document pipeline boring in the best possible way.

Bring your templates, compliance constraints, and the PDF that once broke production.

Book a serious demo