Base64 & Developer Tools

Encode, decode, debug, test and compare — all in one place.

Base64 Encoder / Decoder

Encode text to Base64 or decode Base64 back to readable text. Supports UTF-8.

Input

Encode Decode Clear

Output Copy

URL Encoder / Decoder

Encode special characters for safe use in URLs, or decode percent-encoded strings back to text.

Input

Encode Decode Clear

Output Copy

JWT Debugger

Decode and inspect JSON Web Tokens. Note: this tool decodes tokens but does NOT verify signatures.

JWT

Header

Copy

Payload

Copy

Signature

Signature verification is not performed. Do not use this tool to validate token authenticity.

Regex Tester

Test regular expressions with real-time matching, group capture and highlighting.

Pattern

Flags

g i m s u

Test String

Matches

Diff Checker

Compare two texts side by side and highlight every addition, deletion and unchanged line.

Original

Modified

Compare