Regex tester

Browser

Test a regular expression against text with live highlighted matches.

Runs in your browser. Your files are not uploaded.

Pattern

//

i — case-insensitive

m — multiline

s — dot matches newline

u — unicode

Test string

JSON formatter

Format, validate and minify JSON.

Base64 encode / decode

Encode text or files to Base64, or decode it back.

Hash generator

Get the MD5, SHA-1, SHA-256 or SHA-512 hash of text or a file.

UUID generator

Generate random v4 UUIDs, one at a time or in bulk.

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