JSON, XML & YAML Tools

Find environment variables defined more than once, and which definition wins.

Read a .env file as a table, with duplicates flagged and secret-looking values masked.

Normalise a .env file: consistent quoting, no stray whitespace, one variable per line.

Sort environment variables alphabetically so two files can be compared.

Convert .env into JSON in your browser, with the structure preserved and parse errors explained in plain language.

Decode Base64 back into JSON and format it.

Decode Base64 back into XML and check it is well-formed.

Normalise an INI file into consistent sections and key=value lines.

Convert INI into JSON in your browser, with the structure preserved and parse errors explained in plain language.

Convert Java properties into JSON in your browser, with the structure preserved and parse errors explained in plain language.

Concatenate two JSON arrays, optionally removing duplicate records.

Reverse the order of a JSON array so the last record becomes the first.

Sort an array of objects by any field, including a nested one.

Split a large JSON array into numbered files of a fixed size.

Compare two JSON documents by path and see exactly what was added, removed or changed.

Find keys that appear more than once - the ones JSON parsers silently discard.

Remove nulls, empty strings, empty arrays and empty objects in one pass.

Escape text so it can be embedded as a JSON string value.

Flatten nested JSON into a single level of dotted paths such as user.address.city.

Format and indent JSON, with parse errors reported by line and column instead of a raw parser message.

List every distinct key used anywhere in a JSON document.

Strip one or more keys out of a document at every level.

Rename a key everywhere it appears in a document.

Sort every object key alphabetically, at every level, so two documents can be compared.

Combine newline-delimited JSON records into a single array, reporting any bad lines.

Deep-merge two JSON documents, with the second winning on conflict.

Strip every unnecessary byte from a JSON document and see how much you saved.

Remove every null value from a JSON document.

Count objects, arrays, values and nesting depth, and see which keys appear most often.

Try a dotted path against a document and see the value it resolves to.

Resolve an RFC 6901 JSON Pointer, or list every pointer in a document.

Infer a JSON Schema from a sample document, ready to refine.

Convert JSON into .env in your browser, with the structure preserved and parse errors explained in plain language.

Minify JSON and encode it as Base64 and Base64URL.

Convert JSON into INI in your browser, with the structure preserved and parse errors explained in plain language.

Convert JSON into Java properties in your browser, with the structure preserved and parse errors explained in plain language.

Convert a JSON array into newline-delimited JSON, one record per line.

Convert JSON into TOML in your browser, with the structure preserved and parse errors explained in plain language.

Convert JSON into XML in your browser, with the structure preserved and parse errors explained in plain language.

Convert JSON into YAML in your browser, with the structure preserved and parse errors explained in plain language.

See the shape of a JSON document as an indented tree, with array and object sizes.

Turn an escaped JSON string back into readable text.

Rebuild nested JSON from flat dotted paths.

Check whether JSON is valid, locate the error, and find repeated keys that parsers silently discard.

Pull every value of one key out of a document, however deeply it is nested.

Read newline-delimited JSON as a table, with the fields lined up in columns.

Normalise and sort a Java .properties file, escaping characters outside Latin-1.

Read a Java .properties file as a table, with line continuations resolved.

Strip namespace declarations and prefixes so a document is easier to query.

Normalise a TOML file by parsing and re-emitting it.

Convert TOML into JSON in your browser, with the structure preserved and parse errors explained in plain language.

Check TOML for syntax errors and inspect the structure it produces.

List every value of one attribute across a document.

Strip named attributes - or all of them - from an XML document.

Delete every comment from an XML document.

Compare two XML documents structurally, ignoring formatting.

Pull every occurrence of one element out of a document.

Escape the five characters that XML reserves.

Format and indent XML, with well-formedness checked first and errors located by line.

Merge two XML documents, with the second winning on conflict.

Strip comments and whitespace between elements to shrink an XML document.

List the namespaces a document declares and the prefixes bound to them.

Count elements and attributes, and see which element names dominate a document.

Encode an XML document as Base64 for embedding in JSON, a form field or a token.

Convert XML into JSON in your browser, with the structure preserved and parse errors explained in plain language.

Convert XML into YAML in your browser, with the structure preserved and parse errors explained in plain language.

See the structure of an XML document as an indented tree.

Decode XML entities back into plain characters.

Check whether XML is well-formed and locate the first error.

Compare two YAML documents as data, ignoring formatting and key order.

Normalise YAML indentation and quoting by parsing and re-emitting the document.

Count keys, mappings, sequences and nesting depth in a YAML document.

List every distinct key in a YAML document.

Sort YAML keys alphabetically at every level.

Merge two YAML documents, with the second overriding the first.

Produce the most compact equivalent of a YAML document.

Convert YAML into JSON in your browser, with the structure preserved and parse errors explained in plain language.

Convert YAML into XML in your browser, with the structure preserved and parse errors explained in plain language.

Check YAML for syntax errors, including the tab characters YAML forbids.