ISBN 验证器

本地 isbn-validator 思路，在浏览器本地快速验证并转换国际标准书号 (ISBN-10 与 ISBN-13)。

ISBN Validator

A browser-based tool to strictly validate and convert International Standard Book Numbers (ISBN). Runs entirely locally for guaranteed data privacy.

How to use

  1. Paste or enter the ISBN number you want to validate in the input box.
  2. The tool analyzes it in real-time and displays the validation result.
  3. If valid, it provides both ISBN-10 and ISBN-13 equivalents for copying.

Features

  • 100% local processing, no data upload required
  • Performs strict length, format, and checksum checks
  • Supports two-way conversion between ISBN-10 and ISBN-13

Why use this?

  • Ensure correctness of entered book numbers
  • Automatically calculate missing check digits
  • Free, fast, and secure for unlimited local use

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