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JSON & data

YAML

YAML Flattener / Unflattener YAML to JSON

XML

XML Formatter XML Linter XML to JSON XML to HTML XPath Tester

CSV

CSV Viewer CSV Cleaner

CSV to JSON CSV to Table CSV Splitter & Merger SQL INSERT to CSV

TOML, .env & properties

TOML to YAML Env File Converter Properties Converter TOML Linter

Files

Encode & convert

Text & writing

Web & design

Dev & ops

Security

Generate & media

Calculators & reference

English

Changelog Attributions

© 2026 Daniel Chen

PrismKit

Data Formats

YAML Flattener / Unflattener

YAML Flattener / Unflattener

Runs in your browserLocal

Flatten nested YAML into dotted keys, or expand dotted keys back into nested structure.

YAML Merger

Deep-merge two or more YAML documents, with each one overriding the values before it.

YAML to JSON

Convert YAML into JSON, including multi-document streams.