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Clean, convert, and generate data formats — JSON, CSV, TOML, SQL, and more. All processing stays in your browser.
Zero uploads. Zero exposure.
All processing happens in your browser. Your data never touches a server.
No external API calls. Paste your data and format — no internet required.
Auto-formats as you type with a short debounce. No submit button needed.
Pretty-print, minify, validate and query JSON with JSONPath
Format, validate and inspect CSV with automatic delimiter detection
Format and validate YAML with line-level error reporting
Convert between JSON, CSV, YAML and TypeScript — seven conversion pairs
Generate JSON Schema from data and validate JSON against schemas
Decode JWT tokens and inspect header, payload and expiry
Encode and decode Base64 strings with full Unicode support
URL-encode and decode strings and query parameters
Test regular expressions with real-time match highlighting and capture groups
Generate MD5, SHA-256, and SHA-512 hashes from text or files
Convert Unix timestamps to dates and back. Auto-detects seconds vs milliseconds
Explain cron expressions in plain English with next run times and field breakdown
Your data stays on your device
Every tool on formatvault runs entirely in your browser. No data is ever uploaded, stored, or logged. Paste sensitive credentials, tokens, and payloads with confidence.