All Online Tools

These tools cover common tasks such as developer checks, encoding, text processing, colors, time, and security validation.

Developer Tools

Format, minify, and validate JSON locally in your browser.

Generate UUID v4 values locally in your browser.

Decode JWT Header and Payload locally. Signature verification is not performed.

Test a JavaScript regular expression against text and inspect matches.

Drop or choose a local file to calculate its MD5 checksum.

Generate MD5, SHA-1, SHA-256, and SHA-512 hashes for text.

Encode and decode UTF-8 text with Base64 locally.

Encode or decode URLs and query parameter values with encodeURIComponent.

Convert HEX colors to RGB and HSL with a live color preview.

Convert Unix timestamps to local time and back, supporting seconds and milliseconds.

Count characters, words, lines, paragraphs, and UTF-8 bytes.

Convert text between camelCase, PascalCase, kebab-case, snake_case, and CONSTANT_CASE.

Preview common Markdown syntax as HTML locally in the browser.