TemplateFox turns a template into an API endpoint. Design your document or visual once in the editor, then generate PDFs and images from it by posting your data to a REST call — invoices, packing slips, certificates, shipping labels, social visuals. It ships SDKs in seven languages, an OpenAPI schema, a Postman collection, and native integrations for Zapier, Make, n8n and Pipedream, so it drops into an existing automation without glue code. Free tools (invoice, packing slip, barcode, QR code generators) are available without an account.