About APISmash
The story behind the tool and the person who built it.
About the App
APISmash is a lightweight API testing tool built for developers to quickly test APIs without installing heavy software. It runs entirely in the browser and focuses on speed, simplicity, and privacy. No account required, no data stored, just pure developer utility at your fingertips.
The platform supports all standard HTTP methods (GET, POST, PUT, DELETE, PATCH) and includes advanced features like saved requests, request history, code generation, JSON formatting, environment variables, and keyboard shortcuts — all built for developer efficiency.
About the Builder
Rohit Siva Shankar
2nd Year Mathematics and Computing · IIT Guwahati
“I build systems that scale, tools that developers love, and products that actually get used.”
Background
I am a Mathematics and Computing student at IIT Guwahati who loves solving hard problems — both in algorithms and in real-world systems. From competitive programming to full-stack development, I focus on building things that are not just functional, but scalable and clean.
CP sharpens thinking
Competitive programming trains me to find the optimal path under pressure — designing algorithms that work within tight constraints and edge cases.
Dev brings ideas to life
Full-stack development turns elegant solutions into real products people use — bridging theory with practical engineering impact.
Experience
Web Developer
Alcheringa · IIT Guwahati
- Built registration system handling 10,000+ users
- Worked on performance & reliability at scale
- Designed scalable backend flows for event management
Founder & Builder
CodeSmash
- Built CodeSmash — a platform for DSA, competitive programming, and developer tools
- Shipped 4+ independent products reaching thousands of developers
- End-to-end development — design, engineering, deployment & SEO
Connect
Other Products
CodeSmash ↗
DSA, competitive programming & developer tools platform
PDFTools ↗
Merge, split, compress, rotate PDF files in-browser
Color Picker ↗
Eye-dropper, palette generation & color conversion
Jsonify ↗
CSV to JSON, format, validate, TypeScript generation
ImageKit ↗
Compress and convert images directly in your browser
APISmash is part of the growing CodeSmash ecosystem — a suite of free, privacy-first developer tools built by Rohit Siva Shankar at IIT Guwahati. From PDF manipulation to JSON formatting, API testing to color picking — every tool in the CodeSmash family is designed with the same principles: fast, minimal, no-nonsense, and always free. The goal is to give every developer access to professional-grade tools without subscriptions, logins, or bloat.