DeveloperLocal processing
TOML Formatter
Config trio with JSON and YAML
Input
Output
title = "Universal Toolbox"
version = 1
[features]
local = true
free = true
About This Tool
TOML Formatter is a free online tool. Format, validate TOML and convert to/from JSON All processing runs locally in your browser — files are never uploaded to any server, keeping your data private.
Use Cases
- Format JSON, YAML, TOML, SQL, and XML for API debugging
- Encoding, hashing, JWT decode, AES crypto, and security tasks
- Regex, JSONPath, IP, Cron, and other developer utilities
- Run locally — configs and secrets never leave your device
How to Use
- Step 1
Paste TOML or JSON
- Step 2
Choose mode
- Step 3
View result
- Step 4
Copy output
Frequently Asked Questions
- Is TOML Formatter free?
- Yes, completely free with no registration required and no usage limits.
- Are my files uploaded to a server?
- No. TOML Formatter processes everything locally in your browser. Your data never leaves your device or gets uploaded to any server.
- Which browsers are supported?
- Chrome, Firefox, Safari, Edge, and other modern browsers. We recommend using the latest version for the best experience.
- How do I use TOML Formatter?
- 1. Paste TOML or JSON 2. Choose mode 3. View result 4. Copy output