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Format & validate JSON. Convert JSON/CSV/YAML/TOML. JSONPath queries. AI analysis via OpenAI, Claude, Gemini & Mistral. DevJSON is a developer toolkit built into your browser for working with JSON data quickly and efficiently. ───────────────────────────────── 🔍 JSON FORMATTER & VALIDATOR ───────────────────────────────── Paste any JSON and instantly see a clean, collapsible tree view. Spot syntax errors with precise error messages. View live stats including line count, node count, and file size. Copy or download the formatted output directly from the output panel. ───────────────────────────────── ⚙️ FORMAT CONVERTER ───────────────────────────────── Convert data between JSON, YAML, CSV, and TOML. Upload a file by dragging and dropping it onto the converter — the format is detected automatically. Download both the original input and the converted output as files. ───────────────────────────────── 🔎 JSONPATH QUERY ENGINE ───────────────────────────────── Run JSONPath expressions against any JSON input and see results instantly. Includes a built-in cheat sheet with one-click example queries. ───────────────────────────────── 🤖 AI-POWERED ANALYSIS ───────────────────────────────── Connect your own API key and choose from leading AI models: • OpenAI (GPT-4o, GPT-4 Turbo, GPT-3.5 Turbo) • Anthropic Claude (claude-3-5-sonnet, claude-3-haiku) • Google Gemini (gemini-1.5-flash, gemini-1.5-pro) • Mistral (mistral-large, mistral-small, codestral) Use AI to explain a JSON structure in plain English, infer a JSON Schema from sample data, transform or filter data with a natural language prompt, or ask any custom question about your data. Your API keys are stored locally on your device and are never shared with anyone except the AI provider you choose. ───────────────────────────────── 🖱️ PICK ELEMENT ───────────────────────────────── Click "Pick Element" and then click any element on any webpage to instantly extract its content as JSON. Works with HTML tables, data grids, and JSON code blocks across popular frameworks including Ant Design, Material UI, AG Grid, Confluence, and JIRA. ───────────────────────────────── 🔒 PRIVACY FIRST ───────────────────────────────── No data collection, no telemetry, no analytics. All processing happens in your browser. API keys are stored locally and never synced to the cloud. DevJSON is free, with no subscriptions or paywalls.