World's simplest yaml tool
Quickly check Yet Another Markup Language syntax for errors. Enter your YAML in the input box below and you'll immediately get its syntax validated. Enter YAML, get it validated. There are no ads or downloads, and everything works right in your browser. Made by developers for developers.
Yaml validator tool What is a yaml validator?
This YAML validator checks the syntax of YAML (Yet Another Markup Language) data. If there are mistakes, then it returns a detailed syntax error message that explains what happened. It also tells the position of error and displays the conflicting snippet.
Yaml validator examples Click to use
Invalid YAML Syntax
Invalid YAML file. It displays and error and a explains what happened.
plain text is not yaml
Valid YAML Syntax
Valid YAML data without any errors. All checks pass and you get a green badge.
list: - entry1 - entry2 - entry3
Pro tips Master online yaml tools
You can pass input to this tool via ?input query argument and it will automatically compute output. Here's how to type it in your browser's address bar. Click to try!
All yaml tools
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Quickly convert a YAML dataset to a CSV dataset.
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Quickly convert TSV files to YAML files.
Quickly convert YAML to a PNG, GIF, JPG or BMP Image.
Quickly convert YAML to base-64 encoding.
Quickly convert previously base-64 encoded YAML back to YAML.
Quickly URL-escape a YAML file.
Quickly URL-unescape a YAML file.
Quickly edit a YAML file in a simple YAML editor.
Quickly generate random YAML configs.
Coming soon These yaml tools are on the way
Diff Two YAML Files
Compare two YAML files and show differences between them.
Show YAML Statistics
Show detailed information about a YAML config.
Loop over YAML and truncate lists, arrays, and strings.
Create PHP array from YAML
Convert YAML config to a PHP data structure
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