HiTable — Instant Analysis of Web Page Table Data

Analyze data instantly on web page tables, without leaving the page, without copying data, without Excel.

• Standard HTML tables — including complex ones with merged cells (rowspan/colspan)
• Nested tables — tables inside tables, recursively flattened into one unified grid
• Div-based tables — CSS Grid / Flexbox layouts detected by class patterns and geometric analysis
• ARIA grids — elements with role="grid" or role="table" detected via semantic markers

• Three-scope anomaly detection: across the entire selection, within each column, and within each row
• Values deviating from the mean by more than 2× standard deviation are highlighted with a slow pulsing animation
• Hover over anomalous cells to see the reason (global / column / row) and specific deviation values
• Toggle on/off in the configuration page

Six statistical tests to help identify potentially fabricated data:

Results appear as a ⚠ indicator below the overlay. Problematic cells are visually marked with colored outlines.

• Currency symbols: $, €, £, ¥, ₹, ₽, HK$, NT$
• Magnitude suffixes: K (×1,000), W/万 (×10,000), M (×1,000,000), 亿 (×100,000,000), 万亿 (×10¹²), B (×1,000,000,000)
• Romanian / European numbers: 1.234,56, 1 234,56; currency codes RON, MDL and leu/lei before or after the value
• Number format override in Config for ambiguous values such as 1,234
• Full-width digits: １２３ → 123
• Percentages: 12.5% → 0.125
• Statistical results retain the source decimal format, currency position and magnitude suffix when consistent across a column or row; no currency conversion is performed
• Column types (integer, decimal, currency, percentage) shown in tooltips

• Demo Page: 8 sample tables with 11 background families and a light/dark switch. Right-click → Demo; its footer links to Help and GitHub.
• Help Page: Comprehensive in-extension help covering all features, 10 languages. Right-click → Help.

1. Activate: Click the HiTable icon in your browser toolbar. The icon turns green when active.
2. Select: With HiTable active, drag across table cells. HiTable captures the table at the start; display, statistics and copying use that snapshot.
3. View: Statistics appear on all four sides of the selection.
4. Choose algorithms: Open an outer-corner menu to choose a statistic by its localized name.
5. Copy data: Press Ctrl+C (Mac: ⌘C) to copy the selected cells. Press it twice quickly to copy the entire overlay including statistics.
6. Quick select: Hold Shift and click the top-left cell of a table to select the entire table.
7. Clear / refresh: Click outside the selection or press Esc to dismiss it. Drag again to capture fresh data.
8. Deactivate: Click the HiTable toolbar icon again to restore the page’s original table selection, links and controls. Esc only clears the selection; HiTable remains active.

Drag an inner data-corner handle to resize the range using the same snapshot; use arrow keys when a handle is focused. Press Esc during a resize to restore the previous range. Copying shows a success or failure notification with the selection dimensions. Algorithm menus open directly below their button at the same width, or above it when space is limited.

Non-numeric cells are greyed out and skipped in calculations; copying preserves their original text. Moving the mouse within the selected area highlights a cross-hair to help match rows and columns to their statistics.

Two activation modes: Manual (click to activate per tab) and Auto (automatically activates on specific domains).

Right-click the extension icon → Config. Customize:

• Activation Mode: Manual or Auto
• Number Format: Automatic (table/browser language), decimal comma, or decimal point
• Theme: Choose the multicolour swatch to select a colour family automatically from the page background, or one of 11 solid swatches to keep your chosen family. Both modes use designed light/dark palettes for data, statistics and highlighting, with matching text colours. White, grey and beige pages use Neutral Graphite in Automatic mode. Page theme changes update only the overlay colours; selection data, statistics and copying keep the same snapshot. The actual page background takes priority over the browser toolbar's appearance. Existing saved colours keep their family.
• Enabled Algorithms: Select which statistics appear in algorithm menus
• Default Algorithms: Set the default for each edge (top, right, bottom, left)
• Conditional Formatting: Toggle anomaly highlighting on/off

Automatic uses light Neutral Graphite to preview this settings page; actual overlays follow the webpage background in either mode. The demo offers 11 background colour families and a dark-background switch; select a background and drag cells again to compare.

Install from the Chrome Web Store or load as an unpacked extension from this repository.

git clone https://github.com/wxy/HiTable.git
# Load the repository as an unpacked extension in chrome://extensions
# Run tests: open chrome-extension://<ext-id>/pages/test.html

HiTable does not collect any user data. All data processing happens locally on your computer. No network requests to external services.

MIT

Open an issue on GitHub.

无需离开网页、无需复制数据、不用打开 Excel，即可在网页的表格上进行各种统计分析。

• 标准 HTML 表格 — 包括含合并单元格（rowspan/colspan）的复杂表格
• 嵌套表格 — 表格中的表格，递归展开为统一网格
• Div 表格 — CSS Grid / Flexbox 布局，通过类名模式和几何分析检测
• ARIA 表格 — 带有 role="grid" 或 role="table" 的元素，通过语义标记检测

• 三重范围异常检测：整个选区 / 列内 / 行内
• 偏离均值 2 倍标准差以上的值以慢脉冲动画高亮
• 悬停异常单元格可查看标记原因（全局/列/行）和具体偏离值
• 可在配置页面开关

六项统计检测帮助发现潜在造假数据：

结果以 ⚠ 指示器显示在浮层下方，问题单元格有彩色边框标记。

• 货币符号：$、€、£、¥、₹、₽、HK$、NT$
• 数量级后缀：K（千）、W/万（万）、M（百万）、亿、万亿、B（十亿）
• 罗马尼亚及欧洲数字格式：1.234,56、1 234,56；支持数字前后的 RON、MDL 和 leu/lei
• 配置中可指定数字格式，处理 1,234 等歧义数值
• 全角数字归一化：１２３ → 123
• 百分比自动转换：12.5% → 0.125
• 统计结果保留列/行一致的小数格式、货币位置和数量级后缀；不进行汇率换算
• 列类型（整数/小数/货币/百分比）显示在 tooltip 中

• 演示页面：内置 8 张示例表格、11 种背景色系和明暗开关，右键 → 演示；页脚可打开帮助或 GitHub
• 帮助页面：内建完整帮助，覆盖所有功能，支持 10 种语言。右键 → 帮助

1. 激活：点击浏览器工具栏中的 HiTable 图标，图标变绿表示已激活
2. 选择：激活后拖拽表格单元格；HiTable 在开始时固定表格数据，显示、统计和复制均使用这份快照
3. 查看：四边显示统计结果
4. 选择算法：点击外围角点的菜单，用本地化名称直接选择统计方法
5. 复制数据：按 Ctrl+C（Mac: ⌘C）复制选中单元格；快速连续按两次复制快捷键，复制整个浮层（含统计数据）
6. 快速全选：按住 Shift 点击表格左上角单元格即可选择整个表格
7. 清除／刷新：点击选择区外或按 Esc 关闭浮层，再次拖选可读取最新数据
8. 停用：再次点击工具栏中的 HiTable 图标，恢复网页原有的表格选择、链接和控件操作。Esc 只清除选区，扩展仍保持激活

拖动内层数据选区的四角手柄可调整范围，手柄获得焦点后也可用方向键；调整沿用同一份快照，过程中按 Esc 恢复原范围。复制后会提示成功或失败以及选区行列数。

非数值单元格灰显并在计算时跳过，复制时保留原文。在选择区域内移动鼠标会高亮十字线，帮助对应行列与统计结果。

两种激活模式：手动（点击激活每个标签页）和自动（在特定域名自动激活）。

右键扩展图标 → 配置。可自定义：

• 激活模式：手动或自动
• 数字格式：自动（表格／浏览器语言）、逗号小数或句点小数
• 主题：选择多彩色块按网页背景自动选择色系，或选择 11 种纯色色块之一固定色系。两种模式都根据网页实际明暗使用设计好的浅色或深色配色，数据区、统计区和高亮分别匹配文字颜色。自动模式在白色、灰色和米黄色页面选择中性石墨。页面切换主题时仅更新浮层样式，选区、统计和复制继续使用同一份数据快照；网页底色优先于浏览器工具栏外观。已有配色偏好保留所选色系。
• 启用算法：选择算法菜单中出现的统计
• 默认算法：设置四边各自的默认统计
• 条件格式化：开关异常值高亮

选项页在自动模式下使用浅色中性石墨预览，实际浮层跟随网页底色；演示页提供 11 个背景色系和深色背景开关，切换后重新拖选即可对比。算法菜单与按钮同宽，在按钮下方展开，空间不足时向上展开。

从 Chrome 应用商店 安装，或从此仓库作为未打包扩展加载。

git clone https://github.com/wxy/HiTable.git
# 在 chrome://extensions 中加载仓库目录为未打包扩展
# 运行测试：打开 chrome-extension://<扩展ID>/pages/test.html

HiTable 不收集任何用户数据。所有数据处理均在您的计算机上本地完成，不向任何外部服务发送网络请求。

MIT

在 GitHub 上提交 issue。