URL / Route to PDF

index.mjs

import chromium from '@sparticuz/chromium';
import puppeteer from 'puppeteer-core';
import { S3Client, PutObjectCommand } from '@aws-sdk/client-s3';

const s3 = new S3Client({ region: process.env.AWS_REGION || 'us-east-1' });

export const handler = async (event) => {
  let browser = null;

  try {
    const { url, fileName } = event;
    const bucketName = process.env.S3_BUCKET_NAME;

    if (!url || !fileName || !bucketName) {
      throw new Error('Missing required parameters: url, fileName, or S3_BUCKET_NAME');
    }

    browser = await puppeteer.launch({
      args: chromium.args,
      defaultViewport: chromium.defaultViewport,
      executablePath: await chromium.executablePath(),
      headless: chromium.headless,
    });

    const page = await browser.newPage();
    await page.goto(url, { waitUntil: 'networkidle2' });
    await page.emulateMediaType('print');

    const pdfBuffer = await page.pdf({
      format: 'Letter',
      printBackground: true,
      margin: { top: '0.25in', right: '0.25in', bottom: '0.25in', left: '0.25in' },
    });

    await s3.send(new PutObjectCommand({
      Bucket: bucketName,
      Key: fileName,
      Body: pdfBuffer,
      ContentType: 'application/pdf',
    }));

    return {
      statusCode: 200,
      body: {
        message: 'PDF generated successfully',
        url: `https://${bucketName}.s3.amazonaws.com/${fileName}`,
      },
    };

  } catch (error) {
    console.error('PDF generation failed:', error);
    return {
      statusCode: 500,
      body: { error: error.message },
    };
  } finally {
    if (browser) {
      await browser.close();
    }
  }
};

PDF Generator Lambda

Converts a webpage to PDF and uploads it to S3.

Runtime: Node.js 22.x (x86_64)

Environment Variables

• S3_BUCKET_NAME — destination S3 bucket

Payload

{
  "url": "https://example.com",
  "fileName": "output.pdf"
}

Usage

cURL:

curl -X POST https://your-lambda-url.lambda-url.us-east-1.on.aws \
  -H "Content-Type: application/json" \
  -d '{"url": "https://example.com", "fileName": "output.pdf"}'

AWS SDK (Node.js):

import { LambdaClient, InvokeCommand } from '@aws-sdk/client-lambda';

const lambda = new LambdaClient({ region: 'us-east-1' });
const response = await lambda.send(new InvokeCommand({
  FunctionName: 'your-function-name',
  Payload: JSON.stringify({ url: 'https://example.com', fileName: 'output.pdf' }),
}));

AWS SDK (PHP/Laravel):

use Aws\Lambda\LambdaClient;

$lambda = new LambdaClient([
    'region' => 'us-east-1',
    'version' => 'latest',
]);

$response = $lambda->invoke([
    'FunctionName' => 'your-function-name',
    'Payload' => json_encode([
        'url' => 'https://example.com',
        'fileName' => 'output.pdf',
    ]),
]);

Dependencies

• @sparticuz/chromium
• puppeteer-core
• @aws-sdk/client-s3