Developer Tools

Paste JSON, validate it, format it clearly, and minify it privately in your browser.

Encode plain text to Base64 or decode Base64 back to text privately in your browser.

Encode or decode URL text safely and privately in your browser.

Paste a JWT, inspect its header and payload, and review its claims privately in your browser.

Inspect .env files privately in your browser for syntax issues, duplicate keys, public exposure, and likely secrets.

Build and validate Content Security Policy headers privately in your browser.

Inspect HTTP security headers privately in your browser for parse errors, coverage gaps, and deprecated controls.

Generate secure UUIDs and validate UUID strings privately in your browser.

Convert Unix timestamps to dates and dates back to Unix time privately in your browser.

Test JavaScript regular expressions against sample text and preview replacements privately in your browser.

Encode text into HTML entities and decode entities back to readable text privately in your browser.

Convert text between UPPERCASE, lowercase, Title Case, Sentence case, camelCase, PascalCase, snake_case, kebab-case, and CONSTANT_CASE privately in your browser.

Validate sitemap XML locally for structure, syntax, and Next.js sitemap pitfalls without leaving your browser.

Audit robots.txt content locally for syntax, crawler directives, sitemap declarations, and high-risk blocking rules.

Convert CSV data into deterministic JSON privately in your browser with local structural validation.

Convert flat JSON arrays into deterministic CSV privately in your browser with structural validation.

Format and validate YAML syntax privately in your browser with deterministic local processing.

Format and validate XML syntax privately in your browser with deterministic local processing.

Compare two text blocks privately in your browser with deterministic line-by-line diff output.