11 件のツール

Encoding ツール

ブラウザ内で動作する無料オンライン encoding ツール。

Base64 Encode

Encode plain text into Base64.

Decode Base64 back to readable text.

Decode Base64 image input and preview or download the result instantly.

Convert uploaded images to a Base64 Data URL string in your browser.

Percent-encode text so it can be safely used inside a URL.

Decode a percent-encoded URL string back to readable text.

Encode special characters into HTML entities.

Decode HTML entities back to readable characters.

Convert plain text to binary and decode binary bytes back to text.

Translate text to Morse code and decode Morse back to letters. Supports letters, digits, punctuation, and word separators.

Encode and decode text with a classic Caesar shift cipher. Includes a slider, a ROT13 preset, and a brute-force preview of all 26 shifts.