YAML Tools

Turn JSON into clean, readable YAML.

Convert a CSV table into a YAML list of records.

Convert classic [section]-based INI files into nested YAML.

Convert .env-style KEY=value lines into a flat YAML mapping.

Convert HCL blocks and attributes (a Terraform-style config subset) into nested YAML.

Convert HOCON (Typesafe Config) key/value pairs and dot-paths into nested YAML.

Convert a CREATE TABLE statement into a YAML table/column schema description.

Convert simple, well-formed HTML into a YAML tree of tag/attributes/children/text nodes.

Merge two YAML documents, either shallowly (B's keys win) or deeply (nested mappings merge too).

Convert YAML into TOON, a compact, indentation-based, LLM-token-efficient format.

Re-serialize YAML into a consistent, alphabetized, comment-free, diff-friendly form.

Parse NestedText's key/list/multiline syntax into nested YAML.

Rebuild nested YAML from flat Java-style key=value .properties lines.

Generate realistic-looking random YAML for testing and demos.

Convert TOML tables and arrays of tables into nested YAML.

Convert tab-separated values into a YAML list of records.

Convert XML documents into readable YAML.

Decode a Base64 string back into readable YAML.

Base64-encode a YAML document for embedding in configs or env vars.

Pull out every # comment in a YAML document, one per line.

Strip every comment from a YAML document, leaving just the data.

Compare two YAML documents and see exactly which keys were added, removed, or changed.

Edit YAML with a live structure view alongside it.

Deliberately corrupt valid YAML with reproducible syntax errors, for testing parsers and linters.

Collapse nested YAML mappings and sequences into flat dot-notation keys.

Prettify messy or flow-style YAML into clean, indented block style.

Turn YAML into syntax-highlighted HTML you can paste anywhere.

List the full dot-path of every mapping key in a YAML document.

Collapse block-style YAML into compact, single-line flow style.

List every number-typed leaf value in a YAML document, one per line.

Re-quote every YAML string, keys and values, with double quotes.

Re-quote every YAML string, keys and values, with single quotes.

Recursively sort every YAML mapping's keys alphabetically.

Get key counts, nesting depth, size, and a leaf-type breakdown for any YAML document.

List every string-typed leaf value in a YAML document, one per line.

See a YAML document's nesting as a live, color-coded tree as you type.

Convert a YAML list of records into a CSV table.

Render YAML as a syntax-highlighted PNG image.

Convert YAML documents into properly formatted JSON.

Convert YAML into NestedText's minimal, everything-is-a-string format.

Format and syntax-highlight YAML, then print or save it as a PDF.

Turn YAML into a ready-to-paste PHP array literal with proper quoting and escaping.

Flatten YAML into Java-style key=value .properties lines.

Convert YAML into TOML's table and array-of-tables syntax.

Convert a YAML list of records into tab-separated values.

Convert YAML documents into indented XML.

Cap a YAML document's nesting depth, array length, and string length while keeping it valid.

Decode a percent-encoded string back into readable YAML.

Percent-encode a YAML document for safe use in a URL.

Check whether YAML is syntactically valid and inspect its structure.

List every leaf scalar value in a YAML document, one per line.

Search a YAML document for mapping keys whose name matches a query.

Rename a mapping key to a new name everywhere it appears in a YAML document.

Search a YAML document's leaf values for ones matching a query, labeled by path.

Replace every leaf scalar value that exactly matches a query with a new value.

Replace text inside YAML comments everywhere it appears, leaving the data untouched.

Paste a PHP array literal and get back the equivalent YAML document.