DocuGenerate vs pdf-lib

DocuGenerate creates PDF documents by filling Word-style templates with values from JSON or spreadsheet data. Templates can be uploaded as DOCX, DOC, ODT, TXT or SQL files, and listed data formats include JSON, XLSX, XLS, ODS and CSV. Merge tags can place images, tables, lists, conditional content and QR codes into a document. A REST API is available on every plan, including Free, alongside integrations such as Zapier, Make, n8n and Pipedream, plus connectors or plugins for Bubble, Coda, Power Apps, Xano and Backendless. Usage counts generated documents rather than pages, so a 100-page report counts as one document. The Free plan is free and includes 20 documents per month, two templates, API and integrations access, single-document generation and one concurrent document. Plus is $19 a month and includes 500 documents monthly; additional documents cost $0.04 each. Generated files stay stored until deleted, while data used to generate them is described as transient and not stored. Listed processing and storage regions include the United States, European Union, United Kingdom and Australia.

pdf-lib has no write-up on Specifiction yet; its figures are above.