Developer tools
Format converters, regex, cron, JWT, UUID, colors
Subtopics
Format converters
8 tools
Regex tester
1 tools
Cron generator
1 tools
JWT decoder
2 tools
UUID & hashes
2 tools
Colors
2 tools
Timestamps
2 tools
Diff
1 tools
Mock data
2 tools
URL encoding
1 tools
Markdown
1 tools
SQL formatter
1 tools
HTTP codes & headers
2 tools
Git
1 tools
Docker
1 tools
Development estimate
1 tools
IP & networks
1 tools
TLS certificates
1 tools
API documentation
1 tools
Developer's glossary
1 tools
Calculators
JSON → CSV
Json To Csv — Converters
CSV → JSON
Csv To Json — Converters
JSON → XML
Json To Xml — Converters
XML → JSON
Xml To Json — Converters
JSON ↔ YAML
Json Yaml — Converters
JSON → TypeScript
Json To Types — IT Tools
Base64
Base64
Base64 — Converters
Regex
Test and debug RegExp
Cron
Decode cron expressions
JWT
Decode JSON Web Token
JWT decoder
Jwt — Converters
UUID
Generate unique identifiers
Hash
SHA-256, SHA-384, SHA-512, SHA-1
Color
HEX, RGB, HSL
WCAG contrast
Contrast — IT Tools
Timestamp ↔ Date
ms/s, ISO, UTC/Local
Unix time
Timestamp converter
Diff
Compare two texts
Luhn check
Luhn — IT Tools
Fake Data
Fake Data — IT Tools
URL encode
Url Encode — Converters
Markdown → HTML
Md To Html — Converters
SQL formatter
Format SQL queries
301 Redirects
Redirect Map — IT Tools
Semver
Semver — IT Tools
Error budget
Error Budget — IT Tools
PERT estimate
Pert — IT Tools
IPv4 subnets
Subnet — IT Tools
TLS Certificates
DV/OV/EV, wildcard, trust chain, TLS 1.2/1.3, mTLS and expiry alerts — a certificate guide.
API Documentation
openapi.yaml structure, error codes, versioning, request examples, changelog — how to maintain API docs.
Dev Glossary
Web, data, architecture, operations, Git, testing — a glossary of key development concepts.