22 tools found

Text & Writing

Word CounterCount words, characters, and reading time.
Case ConverterTransform text between cases and coding styles.
Markdown PreviewPreview Markdown with live HTML rendering.
Diff CheckerCompare two blocks of text and see line-by-line differences.
Lorem Ipsum GeneratorGenerate placeholder text in paragraphs, sentences, or words.
Slug GeneratorConvert text into URL-friendly slugs with custom options.

Developer

Base64Encode and decode text or files as Base64.
JSON FormatterFormat, validate, and minify JSON.
QR Code GeneratorGenerate customizable QR codes for text or URLs.
URL Encoder / DecoderEncode and decode URLs and components with a built-in parser.
UUID GeneratorGenerate v4 and v7 UUIDs in bulk with formatting options.
JWT DecoderInspect the header, payload, and signature of any JWT.
Regex TesterTest regular expressions with highlighted matches and groups.

Converters

Unit ConverterConvert length, weight, temperature, volume, area, and data.
Color ConverterConvert HEX, RGB, HSL and check contrast ratios.
Timestamp ConverterConvert between Unix timestamps and date formats.
Number Base ConverterConvert between binary, octal, decimal, and hexadecimal.
HTML Entity Encoder / DecoderEncode and decode HTML entities and numeric references.
JSON ↔ CSV ConverterConvert between JSON arrays of objects and CSV with headers.

Security

Password GeneratorCreate secure, random passwords in your browser.
Hash GeneratorGenerate MD5 and SHA hashes from text and compare values.
File Hash CheckerCompute hashes of files and verify them against known values.

Gegamo/Tools/

Regex Tester

//

Test input

Text to test against

Matches0 matches

Enter a pattern to start.

Pattern and input stay in your browser. Capped at 5,000 matches to keep things responsive.