Developer Tools Index

• JSON Beautifier: Instantly beautify, indent, and format raw JSON into a clean, readable structure with syntax highlighting. Ideal for developers, analysts, and QA teams, this tool makes it easy to inspect API responses, debug payloads, or review configuration files. Simply paste or upload your JSON and get a consistently formatted output that’s easy to scan and understand. It supports large files, works entirely in-browser, and requires no signup or tracking. Whether you’re working with REST APIs, server logs, or event data, this tool streamlines your workflow and helps you catch issues faster with clear, structured JSON output.
• Directory Tree Generator: Convert your folder structure into a clean, visual tree using simple text formatting. This tool helps developers, technical writers, and project managers quickly visualize and document directory layouts for codebases, design systems, or file structures. Just paste a list of files or directories, and the tool will generate a structured, collapsible tree view that’s easy to share or embed in documentation. It’s perfect for readmes, wikis, onboarding guides, and architecture overviews. The output is fully client-side, so your data stays private. Whether you’re organizing source code or documenting a project’s hierarchy, this tool makes folder structures instantly understandable.
• XML Beautifier: Clean up and format raw XML with proper indentation and tag structure for improved readability and easier debugging. This tool is ideal for developers, ad ops professionals, and engineers working with XML-based ad tags, RSS feeds, or backend service responses. Simply paste your unformatted XML, and the tool will automatically reformat it into a well-structured, easy-to-read layout. It highlights nested tags, preserves attributes, and ensures consistent spacing, making complex XML much easier to navigate. Everything runs client-side to ensure data privacy. Whether you're troubleshooting VAST tags or reviewing integration payloads, this formatter saves time and reduces parsing errors.
• Code Preview: Preview code snippets in real-time with syntax highlighting across multiple programming languages. This tool is perfect for developers, technical writers, and educators who need to showcase code clearly in documentation, demos, tutorials, or prototypes. Simply write or paste your code into the editor, choose your preferred language, and see an instant, styled preview rendered side-by-side. It supports multiple file tabs, line numbers, and customizable settings like wrapping, read-only mode, and layout orientation. All rendering is handled client-side, ensuring privacy and speed. Whether you're building a coding guide or testing frontend snippets, this tool provides a fast, focused code presentation experience.
• VAST Inspector: Test and debug VAST ad tags with full XML inspection, playback simulation, and real-time event tracking—all in one tool. Built for ad engineers, QA teams, and ad ops specialists, this tool uses the Google IMA SDK to simulate real-world ad playback and surface any issues in tag structure or delivery. Paste your VAST tag to view formatted XML, preview creative playback, and monitor SDK events like AdLoaded, AdStarted, and AdComplete in real time. It’s ideal for troubleshooting wrappers, verifying third-party tags, or confirming tracking pixels. Everything runs client-side for speed and privacy during development and testing.
• User Agent: Detect and analyze browser User-Agent strings to identify operating systems, device types, and client environments in real time or using custom input. This tool is essential for developers, QA testers, and ad tech professionals who need accurate device and browser insights. Instantly parse your current User-Agent string or manually enter one to simulate different user environments. The output breaks down the platform, browser, rendering engine, and device category for easy reference and troubleshooting. Useful for testing compatibility, debugging delivery issues, or building targeting logic, the tool runs fully in-browser to ensure speed, security, and zero data tracking.
• JSON Diff: Compare two JSON objects side-by-side to quickly identify differences in structure, keys, and values. This tool is designed for developers, QA teams, and analysts working with API responses, configuration files, or data migrations. Paste two JSON payloads into the editor, and the tool highlights added, removed, and modified elements in real time. It supports deep nesting, formatted output, and synchronized scrolling for easy visual comparison. Whether you're validating integrations, debugging discrepancies, or reviewing schema changes, this tool makes it fast and intuitive. Everything runs client-side, ensuring privacy, speed, and a distraction-free environment for precise JSON inspection.
• MP4 to HLS Converter: Convert standard MP4 video files into HLS format (.m3u8 playlist and .ts segments) directly in your browser using FFmpeg.wasm. This tool is perfect for developers, streamers, and media engineers who need to test HLS playback or prepare content for adaptive streaming without server-side encoding. Upload an MP4 file and instantly generate a ready-to-serve HLS package—all client-side, with no uploads or external processing. Ideal for debugging, lightweight workflows, or creating demo streams, it supports configurable segment lengths and playback testing. Whether you're building a video app or verifying HLS compatibility, this tool offers fast, private, browser-based video conversion.
• Word Counter: Analyze any block of text by counting words, characters, lines, paragraphs, and estimating reading time—all in real time. This tool is ideal for writers, editors, marketers, and developers who need quick insights into text structure and density. Paste or type your content to get an instant breakdown of key metrics, including total word and character counts, line and paragraph numbers, and average reading time. Toggle filters to exclude whitespace, symbols, or stopwords, and view word frequency charts to better understand repetition and emphasis. Everything runs in-browser for speed and privacy, making it perfect for content audits, SEO, or editorial workflows.
• JSX Viewer: Live edit and preview JSX components inside a Monaco editor environment with instant rendering and real-time feedback. This tool is perfect for frontend developers, designers, and educators looking to prototype UI components, experiment with props, or debug layout behavior quickly. Write JSX directly in the browser and see immediate visual output alongside your code—no build step required. Supports multiple file tabs for managing components, customizable settings, and error highlighting. Whether you're testing a new UI pattern, teaching React concepts, or building isolated design elements, this tool provides a fast, private, and distraction-free environment for experimenting with React-style components.
• Pivot Table: Upload any CSV and create instant pivot tables and charts with full control over rows, columns, values, and aggregation methods. Built for marketers, analysts, and developers, this tool gives you an Excel-like pivot experience right in your browser—no spreadsheets, no setup. Customize groupings, explore live data summaries, and generate clear visuals to find trends fast. Ideal for campaign reports, log files, and performance exports.
• Code Compare: Compare any two code snippets side-by-side with smart syntax highlighting and automatic language detection to quickly spot differences with precision. This tool is ideal for developers, code reviewers, and engineers working across multiple languages or reviewing version changes. Simply paste two code blocks, and the tool will auto-detect the language, apply relevant formatting, and highlight added, removed, or modified lines. It supports over a dozen languages, handles large files efficiently, and provides a clean, focused UI for accurate comparisons. Whether you're debugging, reviewing pull requests, or analyzing diffs, this tool streamlines the process with clarity and speed—all in-browser.
• Find and Replace: Search and replace text or code using advanced regex support, case sensitivity, whole word matching, and more—all powered by Monaco Editor. With a large library of preset find/replace rules, this tool makes it easy to clean up HTML, reformat JSON, fix encoding issues, and much more. Perfect for developers, QA engineers, content editors, and anyone working with structured or unstructured text. Preview matches live, use smart presets, and export results with a clean, modern UI that’s fast and fully in-browser.
• Global Rating Matrix: Explore and compare content age ratings across countries and regulatory systems. This tool maps age-based classifications from MPA, BBFC, FSK, CNC, AGCOM, Eirin, ACB, CHVRS, KMRB, and others to standardized categories like '12+', '15+', and 'Adults Only'. Instantly understand how media is rated around the world for ad compliance, parental controls, and content distribution.
• Global Genre Matrix: Compare top-level genre categories across countries and systems. This matrix aligns how genres like Drama, News, Kids, and Comedy are classified across regulatory and industry-standard systems, helping media and compliance teams align global programming strategies.
• URL Redirect Resolver: Trace the full redirect path of any URL—including HTTP status codes, redirect locations, and per-hop latency. This tool is ideal for debugging shortened links, tracking domains, and verifying destination URLs before you click. Lightweight, fast, and fully client-friendly.