Extract Pages from PDF API

Pull specific pages out of a PDF by a single page number or a range like 2-4. Ideal for splitting documents or isolating sections into a new, smaller file.

The function Calling it Other PDF tools

How it works

Every PDF tool runs as a small CustomJS function using our built-in pdfUtils. Write a few lines of JavaScript, deploy once, and you get a private API endpoint you can call from anywhere. Make.com, n8n, or plain curl.

Paste the function below into the editor at app.customjs.space.

Set the Response Type to PDF and deploy.

Call your function URL with the x-api-key header.

The CustomJS function

Import EXTRACT_PAGES_FROM_PDF from ./utils and return its result. Remember to set the function's Response Type · PDF

const { EXTRACT_PAGES_FROM_PDF } = require('./utils');

const pdfInput = input.file || input.url;

return EXTRACT_PAGES_FROM_PDF(pdfInput, input.pageRange);

Calling your endpoint

POST to your function URL. Pass the source PDF either as a public URL or a Base64 string. The request payload is capped at 6 MB.

Request body

Field	Type	Description
url	string	Public URL of the source PDF. Provide either `url` or `file`.
file	string	Base64-encoded PDF binary (payload max 6 MB).
pageRange	string	Required. Page number or range to extract, e.g. `"1"` or `"2-4"`.

Example. Source from a URL

curl -X POST https://e.customjs.io/<your-function-id> \
  -H "Content-Type: application/json" \
  -H "x-api-key: YOUR_API_KEY" \
  -d '{
    "url": "https://css4.pub/2017/newsletter/drylab.pdf",
    "pageRange": "1"
  }' --output first-page.pdf

Example. Source as Base64

curl -X POST https://e.customjs.io/<your-function-id> \
  -H "Content-Type: application/json" \
  -H "x-api-key: YOUR_API_KEY" \
  -d '{
    "file": "JVBERi0x..........EyNzg3CiUlRU9GCg==",
    "pageRange": "1-2"
  }' --output pages.pdf

Other PDF tools

HTML to PDF

Render HTML & templates to PDF

PDF to PNG

Pages to high-res images

PDF to Text

Extract plain text

Merge PDFs

Combine files into one

Compress PDF

Shrink file size

// try it first

Prefer to play before you code?

Open the interactive playground on the product page. Generate PDFs live, tweak the code, and copy the generated curl or SDK snippet straight into your stack.

Open the playground Get an API key

extract-pages-from-pdf.curl

curl -X POST https://e.customjs.io/<your-function-id> \
  -H "Content-Type: application/json" \
  -H "x-api-key: YOUR_API_KEY" \
  -d '{
    "url": "https://css4.pub/2017/newsletter/drylab.pdf",
    "pageRange": "1"
  }' --output first-page.pdf

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