DiffChecker Pro was born out of frustration. Every developer has experienced the pain of jumping between a dozen single-purpose tools just to compare data. We decided to fix that — permanently.
In 2023, Alex Chen was working on a large-scale data migration at Google. The migration involved comparing JSON configs, SQL schemas, CSV exports, and YAML infrastructure files — each requiring a different tool, a different workflow, and a different mental model. Hours were lost context-switching between browser tabs.
He called Maria Santos, who was having the same frustration at GitHub, dealing with thousands of pull requests that required comparing structured data across multiple formats. Together, they sketched out what a unified comparison platform would look like — one that handled every format, ran fast, kept data private, and could explain changes in plain English using AI.
DiffChecker Pro launched in early 2024. Within six months, it had processed over a million comparisons from developers, data engineers, and analysts at companies of every size. The product was resonating — not just because it was faster, but because it was the first tool that felt like it was built by developers who actually understood the problem.
Today we are a team of eight, fully remote with headquarters in San Francisco. We are backed by developers who use the product every day, and we intend to keep it that way.
“Empower developers with fast, accurate, AI-powered comparison tools that make data review effortless.”
We measure success not in revenue or growth metrics, but in how many hours of developer frustration we eliminate every day. When a developer can instantly understand what changed between two configs, two database schemas, or two API responses — that is a win we celebrate.
“Be the go-to platform for comparing any data format — from plain text to complex schemas — anywhere in the world.”
We envision a future where any two pieces of data can be compared with a single tool, in any format, with AI-assisted understanding available at a click. From individual developers to enterprise data teams, DiffChecker Pro will be the universal standard for data comparison.
Our values are not a wall poster — they are the lens through which we make every product and engineering decision.
Every millisecond counts when you are in flow. We run diff computations client-side wherever possible so results are instant, not waiting on a network round-trip.
A wrong diff is worse than no diff. We obsess over algorithm correctness, test against thousands of edge cases, and continuously improve our format parsers.
Your data is yours. Text comparisons never leave your browser. For file uploads, data is processed ephemerally and deleted immediately after your session ends.
We believe in giving back. Our diff algorithms draw inspiration from open-source projects, we contribute upstream fixes, and we publish our research openly.
We are developers building for developers. Every feature ships with an API. Every interface supports keyboard navigation. Every output is machine-readable.
We are a small, focused team of engineers and product people who care deeply about developer experience. Every person on our team uses DiffChecker Pro daily.
Alex spent seven years as a software engineer at Google, working on developer productivity tools that scaled to millions of engineers worldwide. Frustrated by the fragmented landscape of data comparison tools, he left to co-found DiffChecker Pro with a simple goal: one tool that handles everything. He holds a BS in Computer Science from Stanford University.
Maria was a principal engineer at GitHub, where she led the team responsible for code review and diff infrastructure serving 100 million repositories. She brings deep expertise in large-scale diff algorithms, real-time collaboration, and developer experience. Maria holds an MS in Computer Science from MIT and is a regular speaker at systems engineering conferences.
David shaped core product experiences at Figma, including the design system and collaborative editing features used by design teams at thousands of companies. He is passionate about reducing friction in developer workflows and building interfaces that feel invisible. David brings a unique blend of design thinking and engineering empathy to every product decision.
Sarah led platform engineering at Stripe, building the infrastructure that powers billions of dollars in annual payment volume. At DiffChecker Pro she oversees our backend systems, AI pipeline, and reliability engineering. She is a strong advocate for operational excellence, zero-downtime deployments, and building engineering cultures where quality is non-negotiable.
Our stack is chosen for reliability, performance, and developer experience — the same criteria we apply to our own product.
Next.js 15 with React 19, TypeScript in strict mode, and Tailwind CSS. Client-side diff algorithms for instant results with zero server dependency.
Laravel 11 on PHP 8.2, MySQL 8, Redis for caching and queues. Python microservices (FastAPI) handle heavy format conversions like Excel, PDF, and Parquet.
Powered by Anthropic Claude for natural language diff summaries, risk assessment, and intelligent format detection. AI responses are cached to protect user privacy.