What is Diff Checker?
Diff Checker is a lightweight Chrome extension that instantly highlights differences between any two blocks of text, code, JSON or even two open tabs, and can generate an AI-powered summary on demand. All comparisons run locally; nothing leaves your browser.
Problem
Users need to compare text, code, or JSON files manually or with basic tools, which is time-consuming and error-prone manual comparisons. Traditional diff tools lack AI-powered summaries and browser integration, and cloud-based options pose data privacy risks.
Solution
A Chrome extension that lets users instantly highlight differences in text, code, or JSON between two blocks or open tabs, with AI-generated summaries. Examples: Compare code versions locally or generate a summary of JSON changes without data leaving the browser.
Customers
Developers, technical writers, QA engineers, and data analysts who frequently compare code, documentation, or datasets. Behavior: Regular code reviews, version control checks, or data validation.
Unique Features
Local processing for privacy, AI summary generation, tab-to-tab comparison, and lightweight browser-native execution without external servers.
User Comments
Saves time during code reviews
AI summaries simplify complex JSON diffs
No data leaves the browser, ensuring security
Convenient Chrome integration
Essential for QA workflows
Traction
Launched on ProductHunt with 260+ upvotes (as of analysis). Active Chrome Web Store presence but specific user/MRR data not publicly disclosed.
Market Size
The global DevOps market, a key user segment, was valued at $10 billion in 2023 (Grand View Research).
