Format anything.
Share nothing.
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.
Available tools
- JSON Formatter
Pretty-print, minify, validate and query JSON with JSONPath
- CSV Formatter
Format, validate and inspect CSV with automatic delimiter detection
- YAML Formatter
Format and validate YAML with line-level error reporting
- Converters13 pairs
Convert between JSON, CSV, YAML, TOML, XML and TypeScript
- JSON Schema
Generate JSON Schema from data and validate JSON against schemas
- JWT Decoder
Decode JWT tokens and inspect header, payload and expiry
- Base64
Encode and decode Base64 strings with full Unicode support
- URL Encoder
URL-encode and decode strings and query parameters
- Regex Tester
Test regular expressions with real-time match highlighting and capture groups
- Hash Generator
Generate MD5, SHA-256, and SHA-512 hashes from text or files
- Timestamp Converter
Convert Unix timestamps to dates and back. Auto-detects seconds vs milliseconds
- Cron Explainer
Explain cron expressions in plain English with next run times and field breakdown
All tools
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.