Developer Tools
Free developer utilities for formatting, validating, and converting data — entirely in your browser.
JSON Formatter
Format, validate, and minify JSON in your browser.
JSON Validator
Check whether JSON is valid.
JSON Minifier
Minify JSON by removing whitespace.
JSON Beautifier
Pretty-print JSON with indentation.
JSON to CSV
Convert JSON arrays to CSV.
CSV to JSON
Convert CSV to JSON arrays.
JSON to YAML
Convert JSON to YAML.
YAML to JSON
Convert YAML to JSON.
JSON Schema Generator
Generate JSON Schema from sample JSON.
JSON Schema Validator
Validate JSON against a JSON Schema.
JWT Decoder
Decode JWT header and payload.
Base64 Encoder/Decoder
Encode and decode Base64 strings.
URL Encoder/Decoder
Encode and decode URL components.
UUID Generator
Generate UUIDs in your browser.
Hash Generator
Generate SHA hashes from text.
cURL to Fetch
Convert cURL commands to fetch().
cURL to Axios
Convert cURL commands to Axios.
cURL to Python
Convert cURL commands to Python requests.
Regex Tester
Test regular expressions against a string.
JSONPath Tester
Query JSON with JSONPath expressions.
Cron Generator
Build and explain cron expressions.
CSV to Markdown
Convert CSV to a Markdown table.
JSON Diff
Compare two JSON documents by path.
XML Formatter
Pretty-print XML with indentation.
HTML Entity Encoder
Escape text as HTML entities.
HTML Entity Decoder
Decode HTML entities to text.
CSV Formatter
Normalize and reformat CSV.
CSV to SQL
Convert CSV rows to SQL INSERT statements.
JSON to TypeScript
Infer TypeScript types from JSON.
HMAC Generator
Compute HMAC signatures with Web Crypto.
AES Encrypt Decrypt
Encrypt and decrypt text with AES-GCM.