Magic Decoder (Auto-Detect Encoding)

Paste an unknown blob and automatically find the chain of decodings (Base64, hex, gzip, URL, ROT13, UTF-16 and more) that turns it into readable text or a recognisable file.

Mode

Examples

Input

172 bytes

Looks like

high

Base64-encoded gzip data

The prefix “H4sI” is the base64 form of that file’s magic bytes.

medium

Base64

172 characters, valid length and alphabet.

Decode chains

Searching…

Heuristic search (depth ≤ 5, beam width 6) scored by readability, known structures and file signatures. It cannot break encryption or guess keys; confidence is a hint, not proof. Everything runs locally in your browser, and inputs are capped at 1.9 MB.

Base64 Encode / Decode

Encode text to Base64 (standard or URL-safe) and decode it back — live.

Encodingwasm

Hex Encode / Decode

Convert text to hexadecimal and back, with optional uppercase.

Encodingwasm

URL Encode / Decode

Percent-encode and decode text or whole-component URL strings.

Encoding

Gzip Base64 Compress / Decompress

Compress text with gzip and output Base64, or decode Base64 gzip back to the original text.

Encoding

Magic Decoder (Auto-Detect Encoding)

Command Palette