JSON to CSV Converter & Viewer Live

View, edit, and convert JSON and CSV files on mobile with ease! JSON CSV Master is a lightweight yet powerful data productivity tool that instantly parses complex JSON and CSV files into clean, readable spreadsheet tables. Seamlessly convert between JSON and CSV with a single tap, flatten nested JSON objects, format minified code, and edit data on the go—built specifically for mobile developers, data analysts, QA engineers, and students. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Key Features ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 📊 1. Instant Tabular Grid Viewer (JSON & CSV) • Renders JSON arrays and CSV files into clean, structured table rows and columns. • Smooth horizontal and vertical scrolling allows effortless navigation through large datasets on your smartphone screen. • Preserves the original JSON key order so your columns appear exactly as structured in the source file. • For non-tabular or deeply unstructured objects, smoothly switch to the built-in code editor with a single tap. 🔄 2. Seamless Two-Way Conversion (JSON ↔ CSV) • JSON to CSV: Convert JSON arrays into standardized CSV format in seconds. • CSV to JSON: Convert comma-separated table rows back into structured JSON data effortlessly. • Robust handling of commas, quotes, line breaks, and special characters with automated CSV escaping. ⚡ 3. Advanced Nested JSON Handling Say goodbye to broken tables caused by nested hierarchies. Choose between two powerful parsing methods: • Flatten with Dots: Transforms nested keys like {"user": {"name": "John"}} into dot-separated headers such as "user.name", neatly mapping all deep data into flat CSV columns. • Keep Objects as Strings: Preserves nested objects or arrays as raw JSON strings inside individual cells, maintaining original schema integrity. ✏️ 4. Built-in Code Editor & JSON Prettifier • View and edit both original source data and converted outputs directly within the app. • Prettify Formatter: Beautify minified, single-line JSON files with clean indentation for effortless inspection. • Search & Replace: Quickly find keywords with live highlights, jump between occurrences, and replace text in bulk. • Developer-friendly controls: Line numbers, Jump to Line, Undo/Redo history, and font adjustments. • Read-Only Lock Mode: Protect critical datasets from accidental touches and unintended edits. 📋 5. Fast Import & Direct Clipboard Paste • Open Local Files: Easily import .json and .csv files from your device storage via the native Storage Access Framework. • Paste from Clipboard: Quickly paste API payloads copied from web browsers, curl outputs, or messaging apps to view them in tabular format immediately. • Built-in Sample Datasets: Explore sample files to quickly test flat tables, non-tabular objects, and nested conversions. 🔒 6. 100% Offline & Private On-Device Processing • All parsing, conversion, and editing run entirely on your local device. • No cloud uploads, no external server transfers, and no tracking. Confidential API tokens, test payloads, and proprietary customer data remain strictly private and secure. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Who Is This App For? ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ • Mobile & Web Developers checking REST/GraphQL API responses on the move. • Data Analysts & Scientists who need to inspect CSV reports and JSON feeds quickly. • QA Testers verifying data structures and edge-case payloads without needing a desktop. • Computer Science Students learning data formats and data preprocessing. Streamline your mobile data workflow today with JSON to CSV Converter & Viewer!