Documill vs Docxtemplater

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

Docxtemplater is a JavaScript library that generates Word, PowerPoint, Excel, and OpenDocument files by filling templates with JSON data. Users add tags such as {user} to a Word or PowerPoint template, and the engine replaces them with supplied values. The core library is open source under MIT/GPLv3 and includes basic templating; advanced features are available through paid modules sold individually, in a four-module PRO pack, or through ENTERPRISE. The library is tested with active Node.js versions 12 through 24 and common browsers. Its Docker API accepts a template and JSON data over HTTP and produces DOCX, PPTX, or XLSX files. The ENTERPRISE Docker image supports use from several programming languages, while code integration uses JavaScript with examples for common frameworks. Generation runs locally without outbound network requests; on-premise deployment and air-gapped environments are supported with the APPLIANCE license. Developers configure the library, while office users can create templates with their existing document skills. Paid plans start at €500 a year. Rendering DOCX page layout and page breaks is outside its scope.