YAML Formatter
Format and validate YAML files
Format and validate YAML files. Key features include Syntax highlighting and Error detection. Use it for everyday development and data tasks. All processing runs locally in your browser. Your files and text are not sent to Tool-web's server.
Encrypted with HTTPSProcessed in your browser
All processing runs locally in your browser. Your files and text are not sent to Tool-web's server.
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Actions:
How to Use
- Paste your YAML code
- Click "Format" to beautify
- Check for syntax errors
- Copy the formatted YAML
Features
- Syntax highlighting
- Error detection
- Indentation normalization
- Comment preservation
- Copy to clipboard
Frequently Asked Questions
Does it support YAML 1.2?
Yes. The tool supports YAML 1.2 syntax including anchors, aliases, and multi-line strings.
Will formatting change my YAML?
The formatter normalizes indentation and spacing while preserving the logical structure and comments.
Can it convert JSON to YAML?
Currently, this tool only formats existing YAML. Use the JSON to YAML converter for format conversion.
What developer tools are available?
We offer JSON formatter, Base64 encoder/decoder, UUID generator, CSS minifier, JavaScript formatter, HTML previewer, regex tester, SQL formatter, and more tools.
Are these developer tools free?
Yes. No account is required. Local formatting tools run in your browser; API Tester uses our server and has request limits.
Is my code data safe?
Formatters process text locally. API Tester sends the request URL, headers (including any API keys), and body through Tool-web's server to the destination API. HTML previews may request resources referenced by your code. Check the tool's processing note before entering sensitive data.
Do these tools support large files?
Capacity depends on the tool, input, and available browser memory. Server-assisted tools also enforce request and response limits.
Can I use these tools offline?
Local tools may work once their required code has loaded. API requests, remote resources, and other network features require a connection.
Privacy & Security
All processing happens entirely in your browser using client-side JavaScript. Your files and text are not uploaded to Tool-web's server.
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