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🔄 Encoding Toolkit

Encode and decode Base64, URL percent-encoding, and Hex — essential for security analysis and CTF work.

Format

Action

Quick Reference

Base64

Encodes binary data as printable ASCII using 64 characters. Commonly used in JWTs, email attachments (MIME), and HTTP Basic auth.

aGVsbG8= → hello

URL Encoding

Encodes special characters for safe use in URLs. Attackers use double-encoding (%2520 = % → /) to bypass WAF and input filters.

hello world → hello%20world

Hex

Each byte represented as two hex digits. Used in shellcode, file magic bytes, hash values, and network packet analysis.

hello → 68656c6c6f