ConfigGenerator

TOML Converter

Convert TOML to JSON, TOML to YAML, or JSON to TOML online for Cargo.toml, pyproject.toml, Rust, Python, Go, and Hugo configurations.

Output:A ready-to-use configuration file for TOML Converter with best practices applied.

What is this tool?

Quick Answer: What is a TOML Converter?

Use a TOML Converter when you need to translate TOML files into JSON or YAML (or vice versa). It automatically parses TOML configurations used in Rust (Cargo.toml), Python (pyproject.toml), Go, and Hugo, and converts them into structured JSON or YAML for use in web APIs, scripts, and other automation workflows.

What is TOML used for?

TOML (Tom's Obvious, Minimal Language) is a configuration file format designed to be easy to read and write. It is built around key/value pairs, tables, and arrays, making it look similar to traditional .ini files, but with much stronger typing and nesting capabilities.

  • Rust: Cargo.toml is the standard package manifest.
  • Python: pyproject.toml is the modern standard for defining Python build requirements.
  • Static Site Generators: Tools like Hugo use TOML for front-matter and global configurations.
  • Go & Node: Many newer CLI tools are adopting TOML over JSON because it allows comments and cleaner multi-line strings.

TOML to JSON / YAML Example

TOML Input:

[package]
name = "my-app"
version = "1.0.0"

[dependencies]
express = "^4.17"

[[authors]]
name = "Alice"
email = "alice@example.com"

JSON Output:

{
  "package": {
    "name": "my-app",
    "version": "1.0.0"
  },
  "dependencies": {
    "express": "^4.17"
  },
  "authors": [
    {
      "name": "Alice",
      "email": "alice@example.com"
    }
  ]
}

How to Use This Tool

  1. Paste or Upload: Paste your TOML, JSON, or YAML into the editor.
  2. Select Target Format: The tool automatically detects your input format and converts it to JSON, YAML, or TOML depending on your selection.
  3. Copy or Download: Instantly copy the converted code to your clipboard or download the file.

Frequently Asked Questions

What is a TOML Converter?
A TOML Converter is a tool that parses TOML files and translates their structure into equivalent JSON or YAML formats, handling specific TOML features like tables and arrays of tables.
How do I convert TOML to JSON?
Just paste your TOML code into the editor. The tool parses it and automatically outputs clean, structured JSON on the right panel.
Can TOML represent arrays of tables?
Yes. TOML uses [[table]] syntax for arrays of tables, which accurately maps to a JSON array of objects. The converter handles this conversion seamlessly.
Can I convert JSON to TOML?
Yes, you can convert JSON to TOML, provided the root of your JSON is an object (dictionary). TOML requires the root level to act as a table.
Why can't I convert YAML arrays to TOML?
If a YAML or JSON file has a sequence (array) as its root element, it cannot be converted to standard TOML. TOML requires a root object to map key-value pairs.
How does TOML handle dates?
TOML has native support for first-class date and time types. When converting to JSON, these are typically serialized as ISO-8601 strings.
Is this TOML converter secure?
Yes. The conversion logic runs entirely in your local browser using JavaScript. We do not transmit your configuration files to our servers.

How We Keep Your Configs Safe & Valid

Built-in Error Checking

Every file is checked against official rules. We catch missing fields and bad syntax. YAML indentation errors are flagged right away. Kubernetes, Terraform, and Docker specs are all covered. API versions and labels are verified too. You get valid output every time you generate.

100% Private & Local

All tools run in your browser only. Your API keys never leave your machine. We do not use any tracking scripts. No data is sent to any server. Passwords and secrets stay on your device. Crypto operations use the Web Crypto API. Your privacy is fully protected at all times.

Secure Settings by Default

Configs use safe defaults out of the box. Containers run as non-root users. Root filesystems are set to read-only. Dangerous Linux capabilities are dropped. Network policies limit pod-to-pod traffic. TLS 1.3 is enabled for web servers. Security headers are added where needed.

Ready for CI/CD & Git

Output files are ready for your Git repo. Use them with ArgoCD, Flux, or GitHub Actions. Files use clear formatting and comments. Code review is easy for your team. Indentation and key order are consistent. Test in staging before going to production. Every file is clean and well-structured.

Infrastructure as Code

Store configs in Git alongside your code. Terraform modules include typed variables. Backend configs support remote state locking. Outputs work across multiple modules. Ansible playbooks use clear task steps. Chef and Puppet configs are also supported. Every file works with version control tools.

Monitoring & Tracing

Set up Prometheus with auto-discovery rules. Create Grafana dashboards with template variables. Add alerting rules with severity labels. Use OpenTelemetry for trace collection. Forward logs to Loki or Elasticsearch. Connect to Jaeger or Tempo for tracing. Monitor metrics, logs, and traces together.

Container & Docker Safety

Dockerfiles use multi-stage builds for small images. Base images are pinned to exact versions. Dev files are excluded from final images. Health checks are added for orchestrator use. Containers switch to non-root users. Docker Compose uses named volumes and networks. Resource limits are set in deploy configs.

Multiple Output Formats

Export as YAML, JSON, HCL, or TOML. Kubernetes uses YAML with proper separators. Terraform uses HCL with correct escaping. JSON output has consistent indentation. Copy to clipboard with one click. Preview output with syntax highlighting. Line numbers help you review quickly.