📊 CSV 分析（行列统计 / 列类型预览）Analyze CSV

使用说明与常见问题How-to & FAQ

「CSV 分析（行列统计 / 列类型预览）」是什么？What is the Analyze CSV tool?

分析 CSV/TSV：行数、列数、空行、空单元格，并按列统计非空数、唯一值数和样例。自动识别分隔符，适合导入前快速检查数据质量。Analyse a CSV or TSV: row and column counts, blank lines and empty cells, plus per-column non-empty counts, unique values and samples. The delimiter is detected — handy for a quick data-quality check before import.

如何使用「CSV 分析（行列统计 / 列类型预览）」？How do I use the Analyze CSV tool?

在「CSV 分析（行列统计 / 列类型预览）」中，把内容粘贴或输入到上方输入框，结果会实时显示在下方，点击「复制结果」即可复制。Paste a CSV or TSV into the box. The report below shows the row and column counts, blank lines, empty cells and a summary of each column, and it updates as you edit; click "Copy result" to copy it.

“唯一”是怎么算的？How is uniqueness counted?

按单元格全文完全相同计数，区分大小写；空单元格不计入唯一值。样例最多列出 5 个不同的值。Exact full-cell match, case-sensitive; empty cells are not counted as unique values. At most 5 distinct sample values are listed.

会修改数据吗？Does it change the data?

不会，只做只读分析，结果是文字报告。No — read-only analysis; the result is a text report.

有哪些选项可以调整？What options can I adjust?

「CSV 分析（行列统计 / 列类型预览）」的设置：可勾选：「第一行是表头」（默认勾选）。改动任一选项后结果会按新设置重新生成。You can adjust the "First row is a header" (on by default) checkbox. The result updates as soon as you change a setting.

代码或数据会被上传吗？Is my code or data uploaded?

不会。「CSV 分析（行列统计 / 列类型预览）」完全用 JavaScript 在本地运行，适合处理含有密钥、内部接口等敏感内容的数据。No. The Analyze CSV tool runs entirely in local JavaScript, so it is safe for data containing keys or internal endpoints.

「CSV 分析（行列统计 / 列类型预览）」免费吗？需要注册吗？Is the Analyze CSV tool free? Do I need an account?

「CSV 分析（行列统计 / 列类型预览）」完全免费，无需注册或安装，打开网页即可使用，手机和电脑都能用；输入的内容只在你的浏览器本地处理。The Analyze CSV tool is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.