CATEGORY 09
Developer Tools
Format, inspect and encode data.
ALL DEVELOPER TOOLS
Choose a developer tool
Encode and identify
6 toolsDeveloperBase64Encode or decode UTF-8 text locally in your browser.OpenDeveloperJWT DecoderDecode JWT headers and payloads locally without implying signature verification.OpenDeveloperURL Parser and EncoderParse URL components or encode and decode URL text locally.OpenDeveloperUUID and ULIDGenerate UUID v4, UUID v7 or ULID identifiers using secure browser randomness.OpenDeveloperSHA HashCreate SHA-256, SHA-384 or SHA-512 hashes for text or local files.OpenDeveloperNumber BaseConvert integers between binary, octal, decimal and hexadecimal.Open
Structured data
4 toolsDeveloperJSON FormatterFormat, minify and validate JSON without uploading it.OpenDeveloperJSON and CSVConvert structured data between JSON and CSV without uploading it.OpenDeveloperJSON and YAMLConvert safely between JSON and YAML data in your browser.OpenDeveloperMarkdown Preview and SanitizerRender Markdown to sanitized HTML and inspect the safe output.Open
Test and network
5 toolsDeveloperRegex TesterTest a regular expression and inspect complete matches, groups and positions.OpenDeveloperText and Code Diff ViewerCompare two text or code versions and inspect additions and removals.OpenDeveloperCron Expression ParserExplain a cron expression and preview its next scheduled run times.OpenDeveloperIP SubnetCalculate IPv4 network, broadcast address, mask and usable host range.OpenDeveloperText Workflow BuilderCompose, reorder and save local text and developer transformation recipes.Open
Developer tools that stay on your device
Format, inspect and encode data. Inputs and files are processed locally and are not uploaded to FroggoTools.