Developer Documentation

Build with 1FRX

Everything you need to integrate 1FRX into your workflow — from free tools to automated integrations.

⌕
Start here
🚀
Getting Started
Understand free vs paid tiers, get your API key, and make your first authenticated request in under 5 minutes.
Read guide →
⚡
API Reference
Complete endpoint documentation with example requests, responses, and error codes for every 1FRX tool.
View reference →
🔑
Authentication
How API keys work, how to include them in requests, and how to rotate or revoke them from your dashboard.
Learn more →
Free vs paid
Free tier
Tools
No account needed · No limits on individual use
  • QR Code Generator
  • Open Graph Image Generator
  • Invoice PDF Generator
  • YouTube Thumbnail Generator
  • Event Speaker Promo Generator
  • PDF Certificate Generator
  • Event Ticket Generator
  • Social Share Preview
Use free tools →
Free tools — no account needed
ℹ️
All 8 tools below run entirely in your browser. No data is sent to 1FRX servers — everything is generated locally and downloaded directly to your device. No account, no tracking, no watermark.
Image
QR Code Generator
● Live
Image
OG Image Generator
● Live
PDF
Invoice Generator
● Live
Image
YouTube Thumbnail
● Live
Image
Speaker Promo Generator
● Live
PDF
Certificate Generator
● Live
PDF
Event Ticket Generator
● Live
Social
Social Share Preview
● Live
Integrations — API key required
Ghost
CMS
Docs ready
Webflow
CMS
Docs ready
WordPress
CMS · Plugin
Docs ready
Airtable
Database
Docs ready
Zapier
Automation
Docs ready
Make
Automation
Docs ready
N8N
Automation
Docs ready
ChatGPT
AI · Custom GPT
Docs ready