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HEX エンコード/デコードと16進ダンプ

Hex converter: support text and hex conversion with offset and ASCII hex dump viewer for development and debugging, with one-click copy and offline.

使い方

「テキスト→HEX」または「HEX→テキスト」を選択。HEX 内のスペースは自動無視。「16進ダンプ」でバイトを行単位表示。

Overview

Hex Encode/Decode & Hex Dump Viewer is an Encoding tool. Hex converter: support text and hex conversion with offset and ASCII hex dump viewer for development and debugging, with one-click copy and offline. It runs 100% in your browser with no upload, so you get instant results with privacy. Whether you need a quick answer or batch processing with precise control, you can enter, validate and export in seconds. The UI is responsive on mobile, tablet and desktop and supports one-click copy.

Use cases

  • Daily use of Hex Encode/Decode & Hex Dump Viewer: Convert text to/from hex; spaces are ignored when decoding. Hex dump mode shows bytes with offsets and ASCII. — enter and get instant results without manual lookup.
  • One-click copy keeps results ready to save, check or share with family and pros.
  • Use Hex Encode/Decode & Hex Dump Viewer offline or on poor network — all calculations stay local and private.
  • Encrypt sensitive snippets locally
  • Debug URL/Base64/JWT encoding

How to use

  1. 1 Convert text to/from hex; spaces are ignored when decoding. Hex dump mode shows bytes with offsets and ASCII..
  2. 2 Choose encode/decode/hash and options
  3. 3 Review highlighted errors and counts
  4. 4 Copy or download the result

Highlights

  • Local & private: processing stays in your browser
  • Live validation with tolerant parsing
  • One-click copy and export for docs, code or sheets
  • Batch and offline support under poor network

Notes

  • Hashing is irreversible
  • Whitespace and padding matter
  • Huge payloads may use more memory

FAQ

Will my data be uploaded?
No. Everything runs locally in your browser.
Why did decoding fail?
Illegal characters or wrong charset are common causes.
How is Hex Encode/Decode & Hex Dump Viewer different?
It runs locally with a focus on speed and privacy, plus tolerant parsing for “hex dump” and one-click copy for reuse.
Can I use results in official reports?
Use it as a working draft and cross-check with authoritative sources; keep the exported log and parameters for traceability.
Tip：Tip: Bookmark this page or pin the tab; find related tools via categories and search.
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すべての計算はブラウザ内で実行され、データはアップロードされません。