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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, QR codes for quick sharing, IPv4 CIDR math, HTTP status reference, SEO title and meta description checks, MIME and CSV checks, regex, token decoding, and integrity helpers.

  • Updated: 2026-05-03
  • Developer tools in this section are designed to run locally in the browser whenever possible.

SEO meta and indexing tools (priority)

Developer utilities that run in the browser where possible. See the catalog for the full list and search.

Developer tools

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 a reviewed content checklist: clear 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.