TOML Formatter
Format TOML configuration files with aligned key-value style and section spacing
TOML-Specific Behavior
Normalizes key-value spacing and inserts clean blank lines between TOML sections.
Professional TOML Formatter Processing Features
Everything you need to work with TOML Formatter data efficiently and professionally
TOML Specification Validation
Validate TOML files against the v1.0 specification, checking inline tables, arrays of tables, and dotted keys for correctness.
Clean TOML Layout
Reformat TOML with aligned key-value pairs, normalized spacing, and consistent section organization.
Compact Output
Produce a clean, minimal TOML output by normalizing spacing and removing redundant blank lines between sections.
String Value Handling
Properly escape and unescape special characters in TOML string values including multiline and literal strings.
Fast Client-Side Engine
Format TOML files up to 10MB instantly in your browser with zero data transfers to external servers.
Monaco Config Editor
Edit TOML with syntax highlighting, section folding, and real-time error detection powered by the Monaco Editor.
How It Works
Simple steps to process your TOML Formatter like a pro
Paste TOML Config
Paste your TOML file content, whether Cargo.toml, pyproject.toml, or any other TOML configuration.
Set Preferences
Choose section spacing, key-value alignment, quote style, and blank line rules for your configuration.
Format & Validate
Run the formatter to clean up your TOML and validate it against the specification simultaneously.
Copy & Apply
Copy the formatted TOML to your clipboard or download it for immediate use in your project configuration.
Professional TOML Formatter Formatter & Validator
TOML Formatter processing runs entirely in your browser — no uploads, no accounts, no limits.
Processing method
Use this tool’s examples, syntax limits and source documentation to understand its output.
Key Technical Features:
- • TOML v1.0 specification compliant parsing and validation
- • Advanced error detection with precise line-by-line reporting
- • Monaco Editor integration for professional code editing
- • Client-side processing for maximum security and speed
- • Support for large files up to 10MB
Processing and output
Check the stated processing method and compare the result with your input before using it.
Security & Privacy:
- • 100% client-side processing - data never sent to servers
- • No tracking, cookies or data collection
- • HTTPS encryption for secure connections
- • Open source validation algorithms
- • GDPR and CCPA compliant approach
Why Professionals Choose EZ Formatter
Your data stays in your browser
Frequently Asked Questions
Common questions about Toml Formatter formatting answered
Yes, our TOML formatter is completely free with no registration required. All processing happens in your browser.
Yes, the formatter fully supports all TOML v1.0 features including inline tables, arrays of tables, dotted keys, and multiline strings.
Absolutely. The formatter handles Cargo.toml (Rust), pyproject.toml (Python), and any other TOML configuration files used in modern development workflows.
Yes, the formatter preserves your comments while normalizing whitespace, aligning key-value pairs, and adding proper section spacing.
You can control section spacing, key-value alignment, quote style for string values, blank line insertion between sections, and indentation for nested tables.
TOML (Tom's Obvious, Minimal Language) is the config format of Cargo (Rust), Poetry (Python), and static site generators - designed for unambiguous parsing where INI is underspecified and YAML is surprising. The current spec is version 1.0, published at toml.io.
Top-level key-value pairs come first, then [table] headers each on their own line with their keys indented below, and [[array-of-tables]] entries kept in document order. Dotted keys (server.tcp.port) stay dotted rather than being expanded - both forms are equivalent per spec, and the original form is preserved.
All of them: integers (including hex 0x, octal 0o, binary 0b), floats, booleans, offset date-times, local dates, times, strings (basic, multi-line, literal), arrays, and inline tables. Values are never re-encoded - a literal string with backslashes stays single-quoted instead of being re-escaped.
Authoritative References
Standards and official documentation that define the formats this tool works with.
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