API Integration
Compatibility API layers for label rendering
Labelary Compatibility API (Closed Beta)
HTTP API for rendering ZPL labels to PDF and PNG formats with API key authentication.
- Base URL:
https://api.zpl.tools/compatibility/labelary/ - Authentication: Required via
X-API-Keyheader - Core Support: Basic PDF and PNG label rendering
- Documentation: Labelary Compatibility Guide
Key Advantages
- No Page Count Limits: Render documents with unlimited pages in a single request
- No Request Limits: Process as many requests as you need
- Diagnostics: Opt-in linting reports skipped commands and silent fallbacks with every render — see the Diagnostics Reference
Support
In case of issues, contact us at https://zpl.tools/contact
Compatibility status
The rendering surface (PNG/PDF via GET and POST, dpmm/dimensions/index
path parameters, X-Rotation, X-Quality, X-Linter, and PDF
page-layout header validation) matches Labelary's documented behavior
for the formats we support. A handful of gaps remain open by design or
by not-yet-implemented status — full page composition for the
X-Page-* headers, alternate print languages (EPL/IPL/DPL/SBPL/PCL),
and JSON label-data extraction chief among them. Every difference,
closed or open, is listed on the
Labelary Compatibility page.