Customjs

Run JavaScript, host HTML pages, generate PDFs, and capture screenshots — all via one API for no-code and AI workflows.

customjs.space

Verified API available Works with n8n Free tier

Quick facts
What is it	Run JavaScript, host HTML pages, generate PDFs, and capture screenshots — all via one API for no-code and AI workflows.
Pricing	Freemium — from $9/mo
Free tier	Yes
Platform	Web Application
API	Yes
Works with	n8n
Best for	Adding custom JavaScript logic to Make.com or n8n workflows, Generating invoice PDFs from Airtable data
Domain registered	2022

Data updated Aug. 1, 2026

What does Customjs do?

Customjs is a toolkit that lets you run JavaScript, host HTML pages and forms, and generate PDFs — all through a single API. It is designed for no-code workflows and AI-powered projects, bridging the gap between simple automation and custom logic. You can execute Node.js code with full NPM support, convert HTML to pixel-perfect PDFs, capture screenshots of any web page, deploy static HTML pages, build forms with a drag-and-drop editor, and even forward incoming emails to webhooks. The platform integrates directly with Make.com, n8n, Power Automate, and Zapier, so you can add custom logic without leaving your favorite automation tools.

Customjs stands out because it gives you the power of code without forcing you to manage servers or write complex infrastructure. You can write inline JavaScript in Make.com modules for quick scripts, or store complex functions on the Customjs platform with dynamic parameters and version control. The PDF generation and screenshot APIs are straightforward — send HTML or a URL, get back a file. The Headless Forms product provides a backend for custom forms, handling submissions, spam protection, and email routing. An MCP Server lets you expose every tool to AI agents, making it useful for AI projects that need to generate PDFs or scrape websites.

The tool is best for no-code developers, automation specialists, and AI project builders who need to add custom logic, generate documents, or capture web content without writing a full backend. Real-world use cases include generating invoice PDFs from Airtable data, creating interactive HTML forms with success pages, exporting Airtable data as JSON, and automating email creation with ChatGPT. If you use Make.com, n8n, or similar platforms and need more flexibility than their built-in modules offer, Customjs fills that gap cleanly.

Workflow Automation

#api#automation#form builder#javascript-execution#no-code#pdf generation#screenshot-api#web scraping

Key features

What makes it stand out

Execute Node.js with full NPM support directly in Make.com, n8n, or via API

Convert HTML to pixel-perfect PDFs with a single API call

Capture screenshots of any web page in seconds

Host executable, AI-generated HTML pages with static hosting

Build forms with a drag-and-drop editor and get a robust backend with Headless Forms

Who is Customjs for?

Who benefits most from this tool

Adding custom JavaScript logic to Make.com or n8n workflows

Generating invoice PDFs from Airtable data

Capturing website screenshots for monitoring or reporting

Pricing

Free tier available — start without a credit card

Free

20 Requests / day
JS Executions
PDF Generation
Request timeout 30s
3 Forms (incl. Headless)
500 Form Responses / month
With CustomJS Logo
1 Mail Hook
10 Incoming Emails / day
5 Hosted Pages
Unlimited Bandwidth*
No credit card required

Pro

$9.0/month

$6.75/month billed yearly

100 Requests / day
JS Executions
PDF Generation
Request timeout 60s
9 Forms (incl. Headless)
2,000 Form Responses / month
No CustomJS Logo (white-label)
3 Mail Hooks
50 Incoming Emails / day
15 Hosted Pages
Unlimited Bandwidth*
1 Custom Domain
Email Support

Ultra

$29.0/month

$21.75/month billed yearly

500 Requests / day
JS Executions
PDF Generation
Request timeout 60s
29 Forms (incl. Headless)
6,000 Form Responses / month
No CustomJS Logo (white-label)
19 Mail Hooks
250 Incoming Emails / day
40 Hosted Pages
Unlimited Bandwidth*
1 Custom Domain
Email Support
JavaScript Coding Support

Mega

$99.0/month

$74.25/month billed yearly

5,000 Requests / day
JS Executions
PDF Generation
Request timeout 60s
59 Forms (incl. Headless)
30,000 Form Responses / month
No CustomJS Logo (white-label)
49 Mail Hooks
1,000 Incoming Emails / day
100 Hosted Pages
Unlimited Bandwidth*
1 Custom Domain
Email Support
JavaScript Coding Support
Zoom Meeting Support

Trust & presence

Domain Domain registered 2022

Gallery

Click any image to enlarge

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