Developer tools
70 tools for formatting, validating, converting and inspecting data — each one runs entirely in your browser.
Format & validate 9
- JSON FormatterFormat, validate and minify JSON
- YAML ↔ JSONConvert configuration formats
- XML FormatterFormat and inspect XML documents
- SQL FormatterMake SQL readable and consistent
- JSON ValidatorValidate JSON and inspect its type
- JSON MinifierMinify JSON for transport
- XML ValidatorValidate XML syntax locally
- YAML FormatterNormalize YAML configuration
- JSON Schema ValidatorValidate JSON against a schema
JSON 3
Encode & decode 3
Encoding 3
Converters 5
Text 8
- Regex TesterTest patterns with live matches
- Markdown PreviewWrite and preview Markdown
- Text DiffCompare two text snippets
- Whitespace CleanerNormalize spaces and blank lines
- Line SorterSort lines naturally or alphabetically
- Line DeduplicatorRemove duplicate lines
- Regex VisualizerBreak a pattern into readable tokens
- Safe Regex TesterTest patterns with abuse safeguards
Code 5
Web 7
- cURL BuilderBuild requests from method and headers
- GraphQL FormatterFormat queries and mutations
- Query String ParserParse and build URL parameters
- HTTP Status CodesLook up HTTP meanings quickly
- URL ParserInspect every URL component
- Webhook FormatterPretty-print webhook payloads
- API Request BuilderCreate fetch and cURL requests
API 4
Security 8
- JWT DecoderInspect a token locally
- Hash GeneratorCreate SHA-2 and SHA-1 hashes
- Password GeneratorGenerate strong passwords locally
- JWT HMAC SignerSign and verify HS256 tokens locally
- Certificate DecoderInspect PEM certificate metadata
- PEM InspectorIdentify PEM block types and size
- JWT RS256 VerifierVerify JWTs with a local JWK
- Log Secret RedactorRemove common secrets from logs
Payments 8
- Hex Encoder / DecoderConvert text and protocol hexadecimal bytes
- BCD Encoder / DecoderPack and unpack numeric BCD
- EBCDIC DecoderDecode common host bytes locally
- ISO 8583 BitmapShow enabled data elements
- ISO 8583 InspectorInspect MTI, bitmap and fields
- EMV TLV ParserParse BER-TLV payment tags
- Luhn / PAN CheckValidate and mask account numbers
- Track 2 InspectorParse masked Track 2 data