PDF Engine
Business PDFs from JSON that survive downstream workflows.
Open real labels, property reports, government forms, technical reports, invoices, lab reports, tickets, and contracts generated from one payload. The useful question is not whether a PDF exists, but whether it holds up once forms, layout discipline, tagging, or signing become part of the job.
[01] Shipping labels
FREEYoga flexbox grid positions 4 shipping labels on an A4 sheet. Font subsetting produces 15KB documents instead of 150KB — critical at millions of labels per day. No coordinate math, no absolute positioning.
{"page": { "size": "A4", "margin": 24 },"children": [{"type": "heading","value": "Shipping Labels — Batch #2026-03-31","level": 1,"fontSize": 14},{"type": "container","style": {"flexDirection": "row","flexWrap": "wrap","gap": 12},"children": [{"type": "container","style": { "width": "48%", "padding": 14 },"children": [{ "type": "paragraph", "value": "ORD-2026-48291" },{ "type": "paragraph", "value": "FROM" },{ "type": "paragraph", "value": "Meridian Labs Inc." },{ "type": "paragraph", "value": "SHIP TO" },{ "type": "paragraph", "value": "Rachel Torres" },{ "type": "paragraph", "value": "1420 NW Gilman Blvd" }]}// ... 3 more labels]}]}
- Yoga flexbox grid layout
- Multiple labels per page
- Barcode-ready text areas
- Custom fonts via subsetting
- A4 and Letter page sizes
- ~25ms render time
[09] Capabilities
When PDF stops being a basic export.
Pro is enough when you need strong PDF generation on its own. All Formats and Enterprise start making sense when the same workflow also needs signatures, forms, archival output, or the rest of the document stack.
| Feature | Pro (PDF) | All Formats / Enterprise |
|---|---|---|
| Yoga flexbox layout | ||
| Headings, paragraphs, containers | ||
| Tables with pagination | ||
| Font subsetting (small file size) | ||
| Internal & external links | ||
| Validation & repair | ||
| AcroForms (text fields, checkboxes, dropdowns) | — | |
| Table of contents (auto-generated) | — | |
| Bookmarks / outline tree | — | |
| Dynamic headers & footers | — | |
| Page numbering (Page X of Y) | — | |
| Tagged PDF / accessible structure | — | |
| PDF/A-2a archival compliance | — | |
| Digital signatures (PKCS#7) | — | |
| Streaming generation (100+ pages) | — | |
| HarfBuzz complex script shaping | — |
Get started
Generate PDFs that do more than print cleanly.
Start with the PDF that already needs more than clean rendering, then check whether layout, forms, signing, or archival output hold up in the real workflow.