Tool hub
Developer tools with fast static pages and clear behavior
Use small, reliable utilities for everyday developer tasks: UUID/GUID generation, JSON formatting, URL encoding, HTML escaping, timestamps, references, and color tools.
Developer Tools
UUID / GUID Generator
Generate RFC 4122 version 4 UUIDs in your browser with copy-ready output and clear usage notes.
JSON Formatter And Validator
Format, validate, and minify JSON in your browser with clear error messages and copy-ready output.
URL Encoder And Decoder
Encode and decode URL components in your browser, with clear notes about percent encoding and privacy risks in URLs.
HTML Escape And Unescape
Escape and unescape HTML entities in your browser for safer display of text in markup contexts.
Unix Timestamp Converter
Convert Unix timestamps to readable UTC/local dates and convert dates back to timestamps in your browser.
JSON Schema Validator
Validate JSON data against a JSON Schema-like object in your browser with clear limitations.
JWT Decoder
Decode JWT header and payload locally in your browser with explicit warnings about token secrecy and signature verification.
Regex Tester
Test JavaScript regular expressions in your browser with match output and ReDoS warnings.
API And Guides
Privacy And Limitations
Developer tools in this section are designed to run locally in the browser whenever possible.
- Generated identifiers are only useful when they match the format expected by your system.
- Browser-side tools should not be used as the only control for security-sensitive backend workflows.
- Reference pages are educational and should be checked against project-specific requirements.
FAQ
Do developer tools upload my input?
The initial developer tools are static browser-side utilities. UUID generation happens locally in your browser.
Why start with UUID generation?
UUID generation is useful, deterministic to test at the format level, and fits the privacy-first browser-side approach.
How is quality controlled for new developer pages?
New pages are added through canonical source entries with explicit intent, privacy notes, limitations, and static build audits.
Can these tools replace backend validation logic?
No. They accelerate local workflows, but production validation, authorization, and persistence rules must remain on the backend.