Developer Tools
A JSON validator, regex tester, cron explainer, Base64 encoder, ASCII table and password generator. New to the command line? Start with the Linux lessons.
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14 tools
- JSON ValidatorValidate, fix and format JSON, with a searchable tree and private history
- Regex TesterTest a regular expression live, with groups, replace and a plain-English explanation
- Cron Expression GeneratorRead a cron schedule in plain English, see its next runs, and write it for crontab, Quartz, AWS, GitHub or Kubernetes
- Base64 Encoder/DecoderEncode and decode Base64 text, files and data URIs
- Password GeneratorStrong passwords and passphrases, generated on your device
- ASCII TableEvery character with its decimal, hex, binary and HTML code
From Learn
Developer Tools
JSON Validator
Validate, fix and format JSON, with a searchable tree and private history
OpenRegex Tester
Test a regular expression live, with groups, replace and a plain-English explanation
OpenCron Expression Generator
Read a cron schedule in plain English, see its next runs, and write it for crontab, Quartz, AWS, GitHub or Kubernetes
OpenBase64 Encoder/Decoder
Encode and decode Base64 text, files and data URIs
OpenASCII Table
Every character with its decimal, hex, binary and HTML code
OpenPassword Generator
Strong passwords and passphrases, generated on your device
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