InterviewPrep

Offline-first technical interview preparation for developers.

InterviewPrep is an offline-first browser extension for developers preparing for technical job interviews. All questions and your progress are stored locally — no account, no server, no internet connection required during study. ─── BUILT-IN CONTENT ─────────────────────────────────── ▸ TypeScript — 197 questions across 11 topics Basics, Interfaces & Types, Functions, Generics, Classes, Advanced Types, Async, Modules, Compiler Config, Runtime Validation, Real-World Patterns ─── DOWNLOADABLE SUBJECT PACKS ───────────────────────── Install additional subjects with one click from the Subjects screen: ▸ Python & FastAPI — 200 questions, 20 topics Python fundamentals, OOP, typing, collections, iterators/generators, concurrency, testing, and 8 FastAPI-specific topics including Pydantic, dependency injection, auth, middleware, and deployment ▸ Java — 222 questions, 11 topics Core Java, OOP, Collections, Concurrency, JVM, Spring Boot, Streams, Exceptions, Generics, I/O, JDBC, and Annotations ▸ Node.js — 150 questions, 6 topics Event loop, async patterns, Express.js, streams, and production best practices ▸ Spring Boot — 120 questions, 12 topics Fundamentals, auto-configuration, DI, REST, JPA, transactions, security, testing, Actuator, microservices, and performance ▸ React — 80 questions, 8 topics Fundamentals, components/props, state/events, rendering/lists, Hooks/effects, forms/context, performance/routing, and testing ▸ DevOps — 150 questions, 6 topics Docker, Kubernetes, CI/CD, Linux, Infrastructure as Code, and monitoring ─── KEY FEATURES ─────────────────────────────────────── ✓ Study mode — step through questions at your own pace with full explanations ✓ Practice interview — timed simulation with configurable question count and topics ✓ Progress tracking — per-topic completion rates and correct/incorrect history ✓ Bookmarks — save questions to review later ✓ Filtering — by difficulty (beginner / intermediate / advanced), question type, and common interview questions ✓ Dark and light themes ✓ Font size control (8 sizes) ✓ Export any subject as JSON to edit and re-import as a custom pack ✓ Import your own question packs in the open SubjectPackJSON format ✓ Fully offline — works with no internet connection after install ─── PRIVACY ──────────────────────────────────────────── No data ever leaves your device. There is no account, no telemetry, no analytics, and no external service beyond fetching optional subject packs from GitHub when you choose to install them. ─── OPEN SOURCE ──────────────────────────────────────── Project website: https://www.fuatyazar.com/interviewprep Source code: https://github.com/fuvito/interview-prep