APIs

Learn Rapid and API Development. Find Challenges (with solutions!) and interactive examples and visuals to help you become a pro API Developer.

The 'how' and 'why' of CORS, from start to finish.

Free REST API to detect browser, OS, device from user agent string. Use APIC Agent’s easy to use API and avoid hard to maintain user-agent parsing libraries.

A free, fast and beautiful API request builder

Super fast and easy Social Media Sharing Buttons. No JavaScript. No tracking.

Cloudimage solves the problem of slow loading image-heavy sites by automatically optimizing all images for best quality and compression ratio, adjusting for individual device screen size and delivering through a dedicated image CDN network.

Contact form backend as a service. Create your form and post to our URL. We handle the rest!

Create real, private email addresses on demand. Send and receive emails and attachments in application code and integration tests. Intuitive REST APIs and SDK Libraries. Free for personal use.

Docamatic is a high quality API that allows you to convert HTML to PDF, create documents from templates and capture screenshots.

Paw is a full-featured HTTP client that lets you test and describe the APIs you build or consume. It has a beautiful native macOS interface to compose requests, inspect server responses, generate client code and export API definitions.

Simplify workflows and create better APIs – faster – with Postman, a collaboration platform for API development.

Leaflet is a modern, lightweight open-source JavaScript library for mobile-friendly interactive maps.

The ultimate favicon generator. Design your icons platform per platform and make them look great, everywhere