Changelog

Notable changes to the zpl.tools API, newest first. Entries follow semantic versioning. Breaking change marks a change that can break an integration.

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v1.0.0-beta

2026-07-28 · Public API beta

Added

• Render API: renders ZPL to PNG or PDF over HTTP, with no page-count, request-size, or rate limit.
• Render an entire multi-label document into a single multi-page PDF in one request.
• API-key authentication with the X-API-Key header. You manage keys from the dashboard.
• Labelary-compatible endpoints: an existing client migrates with a base-URL change and a key.
• Opt-in render diagnostics: send X-Linter: On and the response carries an X-Warnings header that lists ignored commands and silent defaults, up to 20 entries. See the Diagnostics Reference.
• OpenAPI 3.1 reference in the documentation.
• Guides: first-party quickstart, multi-page retailer packets, and the Labelary migration guide.

Notes

• The Labelary-compatible endpoints are the complete public API. The API has no native POST /api/parse route. The online viewer and desktop app provide structured ZPL inspection.