Will minifiers change my code behavior?

Minifiers remove whitespace and may rewrite syntax for size. Always test minified output. Use source maps in your own build pipeline for production.

Is the regex tester full PCRE?

It uses JavaScript’s RegExp flavor. Features differ from Python, PHP, or POSIX regex—check compatibility for your target environment.

Does the meta tag preview fetch remote URLs?

The Open Graph / Twitter preview parses pasted HTML only. It does not fetch live URLs or run network requests for arbitrary sites.

Web & developer

Web & developer tools

Ship faster with formatters, minifiers, and converters that run in the tab: validate structure, shrink assets, and debug strings without leaving your workflow.

All web & developer tools (13)

JSON formatter & minifier
Pretty-print or minify JSON online. Fix unreadable API responses and shrink payloads for logs.
HTML minifier
Remove extra whitespace from HTML snippets—smaller payloads for inline templates and emails (test output).
CSS minifier
Minify CSS with csso to cut file size—pair with your build pipeline for production assets.
JavaScript minifier
Minify JavaScript with Terser for smaller scripts—verify behavior after minification.
CSV ↔ JSON converter
Convert between CSV text and JSON arrays or objects—handy for spreadsheets, APIs, and ETL quick fixes.
Regex tester (JavaScript)
Try regular expressions against sample text with flags—debug patterns before you ship them.
WCAG contrast checker
Compute contrast ratio between two hex colors and aim for accessible text on UI backgrounds.
YAML ↔ JSON converter
Convert YAML to JSON and back—note that some YAML features are lossy when round-tripping through JSON.
XML formatter
Pretty-print or minify XML with the browser’s parser—quickly tidy configs and SOAP snippets.
JWT builder (HS256)
Build a signed HS256 JWT from JSON header and payload—testing only; protect secrets appropriately.
Cron expression explainer
Parse cron strings and list upcoming run times—verify schedules for crontab and orchestrators.
URL & query-string helper
Parse URLs, edit query parameters, and copy the result—fewer hand-editing mistakes in links.
Open Graph & Twitter meta preview
Paste HTML and inspect og: and twitter: tags—no live fetch; validates markup you already have.

Frequently asked questions

Will minifiers change my code behavior?: Minifiers remove whitespace and may rewrite syntax for size. Always test minified output. Use source maps in your own build pipeline for production.
Is the regex tester full PCRE?: It uses JavaScript’s RegExp flavor. Features differ from Python, PHP, or POSIX regex—check compatibility for your target environment.
Does the meta tag preview fetch remote URLs?: The Open Graph / Twitter preview parses pasted HTML only. It does not fetch live URLs or run network requests for arbitrary sites.

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