dev-document

Document Generation

Goal

Create professional documents in different formats: PDF, DOCX, XLSX, PPTX.

Supported formats

Format	Extension	Recommended tool	Usage
PDF	.pdf	puppeteer, wkhtmltopdf, markdown-pdf	Reports, invoices, formal docs
Word	.docx	docx (npm), python-docx	Editable documents, specifications
Excel	.xlsx	exceljs, openpyxl	Tabular data, numeric reports
PowerPoint	.pptx	pptxgenjs, python-pptx	Presentations, pitch decks

Instructions per format

PDF - Generation from HTML/Markdown

# Option 1: Puppeteer (Node.js)
npm install puppeteer

# Option 2: wkhtmltopdf (CLI)
wkhtmltopdf input.html output.pdf

# Option 3: markdown-pdf (Markdown -> PDF)
npm install markdown-pdf

// Puppeteer - HTML to PDF
import puppeteer from 'puppeteer';

async function generatePDF(htmlContent: string, outputPath: string) {
  const browser = await puppeteer.launch();
  const page = await browser.newPage();
  await page.setContent(htmlContent, { waitUntil: 'networkidle0' });
  await page.pdf({
    path: outputPath,
    format: 'A4',
    margin: { top: '20mm', right: '15mm', bottom: '20mm', left: '15mm' },
    printBackground: true,
  });
  await browser.close();
}

DOCX - Word documents

// npm install docx
import { Document, Packer, Paragraph, TextRun, HeadingLevel } from 'docx';
import * as fs from 'fs';

async function generateDOCX(title: string, sections: Section[]) {
  const doc = new Document({
    sections: [{
      properties: {},
      children: [
        new Paragraph({
          text: title,
          heading: HeadingLevel.TITLE,
        }),
        ...sections.flatMap(section => [
          new Paragraph({
            text: section.heading,
            heading: HeadingLevel.HEADING_1,
          }),
          new Paragraph({
            children: [new TextRun(section.content)],
          }),
        ]),
      ],
    }],
  });

  const buffer = await Packer.toBuffer(doc);
  fs.writeFileSync('output.docx', buffer);
}