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.
• 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.
• 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.
• 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.