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🛠 Mojibake Fixer

Automatically decodes garbled text by combining multiple encodings and suggests the most "natural Japanese" result. Batch-tests misreadings of Shift_JIS, UTF-8, EUC-JP, and ISO-2022-JP.

100% Free No signup Browser-only 5 languages Dark mode

🔒 About Privacy

📖 How to Use

  1. 1
    Paste garbled text
    Copy garbled text from your email or file and paste it here.
  2. 2
    Press Auto Fix
    It tries UTF-8 / Shift_JIS / EUC-JP / ISO-2022-JP / URL combinations.
  3. 3
    Pick a candidate
    Higher-scoring candidates appear at the top. Copy the right one.

❓ Frequently Asked Questions

Why are multiple candidates shown?
Mojibake can arise from multiple paths and cannot always be uniquely identified. We score candidates by Japanese character frequency and rank them.
Is my input sent to a server?
No. We load encoding.js from a CDN and decode entirely in your browser. Text is never transmitted.
Can I load a Shift_JIS or EUC-JP file directly?
Currently only text paste is supported. For full file encoding conversion use the Line Endings & Encoding tool.
🐛 Found a bug or issue with this tool?

Free to use, no signup. Even just the steps to reproduce are helpful. Reports go directly to the operator and help us fix issues.

* Browser info (UA / screen / language / URL) is sent automatically to help reproduce the issue