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DesignDiff

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Overview

Find the differences between designs and website codes with pixel-perfect precision.

A inspection and ruler tool for web developers and designers. Measure elements, distances, margins, and padding with pixel-perfect precision directly in your browser. 专为 Web 开发人员和设计师打造的检查和标尺工具。直接在浏览器中以像素级精度测量元素、距离、外边距和内边距。 ## Features - **Click to toggle**: Enable/disable by clicking the extension icon. - **📏 Pixel-Perfect Rulers**: Horizontal and vertical rulers that keep in sync with page scroll. - **🎨 Visual Inspector (Figma Style)**: - **Visual Feedback**: Selected elements have a hatch pattern background (darker when locked, lighter when hovered). - **Detailed Info**: Displays a label with the element's **Tag name**, **ID**, and **Class name**. - **Smart Coordinates**: Real-time **X/Y coordinates** for all four edges shown directly on the rulers and reference lines. - **Hover** over any element to view its dimensions, margins (red), and padding (green). - **Click** an element to **lock** it; press **`Esc`** to unlock. - While locked, **hover** other elements to measure **relative distances** (gaps, padding, overlap) and **alignment offsets**. - **Guides**: Faint dashed reference lines assist alignment around the selected element. - **📐 Smart Guides**: - **Create**: Drag from top or left ruler to add a guide. - **Snap**: Hold **`Alt` (Option)** when dragging to snap guides to element edges or centers (target element highlights in blue). - **Select**: Click a guide to select (turns red). - **Delete**: Press `Delete` or `Backspace` to remove the selected guide. - **🖼️ Comparison Mode** (NEW): - **Toggle**: Double-press **`Ctrl`** (or `Command` on Mac) to switch between measurement and comparison modes. - **Image Upload**: First time entering comparison mode, select an image to overlay on the webpage. - **Move**: Click and drag the image to reposition; hold **`Shift`** while dragging to constrain movement to horizontal or vertical. - **Resize**: Drag corners or edges to resize; hold **`Shift`** to maintain aspect ratio; hold **`Alt`** to resize from center. - **Keyboard Move**: Use arrow keys to move image by 1px; hold **`Shift`** + arrow keys to move by 10px. - **Opacity**: Type two digits (01-99) to set opacity; 00 sets 100%. - **Toolbar**: Floating toolbar shows X, Y, W, H, Opacity (all editable); includes **1:1** (reset to original size) and **Fit** (fit to window) buttons. - **Drag Toolbar**: Click and drag the toolbar from the grip icon to reposition it anywhere on screen. - **Delete**: Press **`Delete`** or **`Backspace`** to remove the image and exit comparison mode. - **Persistent**: Image remains visible but non-interactive when switching back to measurement mode. ## 功能特性 - **启动**:点击扩展图标即可启用/禁用。 - **📏 像素级标尺**:跟随页面滚动的水平和垂直标尺。 - **视觉反馈**:选中元素显示斜线纹理背景(锁定状态颜色更深,悬停状态较浅)。 - **详细信息**:标签显示选中元素的 **标签名**、**ID** 和 **类名**。 - **智能坐标**:所有4个边缘的实时 **X/Y 坐标** 直接显示在顶部和左侧的标尺/参考线上。 - **悬停**在任何元素上即可查看尺寸、外边距(红色)和内边距(绿色)。 - **点击**元素以**锁定**它。按 **`Esc`** 键取消锁定。 - 锁定后**悬停**其他元素以测量**相对距离**(间距、内边距、重叠)和**对齐偏差**。 - **参考线**:选中元素时显示弱化的虚线参考线,辅助视觉对齐。 - **📐 智能参考线**: - **创建**:从顶部或左侧标尺区域拖动即可创建。 - **吸附**:拖动时按住 **`Alt` (Option)** 键可将参考线吸附到元素边缘和中心(目标元素会高亮显示为蓝色)。 - **选中**:点击参考线以选中它(变红)。 - **删除**:按 `Delete` 或 `Backspace` 键删除选中的参考线。 - **🖼️ 对比模式** (新功能): - **切换**:连续按两次 **`Ctrl`** (或 Mac 上的 `Command`) 在测量模式和对比模式间切换。 - **图片上传**:首次进入对比模式时,选择一张图片覆盖在网页上。 - **移动**:点击并拖动图片重新定位;按住 **`Shift`** 键拖动可限制为水平或垂直移动。 - **缩放**:拖动顶点或边缘进行缩放;按住 **`Shift`** 保持宽高比;按住 **`Alt`** 从中心缩放。 - **键盘移动**:使用方向键移动图片 1px;按住 **`Shift`** + 方向键移动 10px。 - **透明度**:连续输入两位数字 (01-99) 设置透明度;00 设置为 100%。 - **工具栏**:浮动工具栏显示 X、Y、W、H、透明度(均可编辑);包含 **1:1** (恢复原始大小) 和 **适配** (适配窗口) 按钮。 - **拖动工具栏**:从拖动图标点击并拖动工具栏,可将其移动到屏幕上的任何位置。 - **删除**:按 **`Delete`** 或 **`Backspace`** 键删除图片并退出对比模式。 - **持久显示**:切换回测量模式后,图片保持可见但不可交互。

Details

  • Version
    1.2.0
  • Updated
    January 1, 2026
  • Offered by
    paul
  • Size
    1.33MiB
  • Languages
    English
  • Developer
    Email
    gp5251@qq.com
  • Non-trader
    This developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.

Privacy

The developer has disclosed that it will not collect or use your data.

This developer declares that your data is

  • Not being sold to third parties, outside of the approved use cases
  • Not being used or transferred for purposes that are unrelated to the item's core functionality
  • Not being used or transferred to determine creditworthiness or for lending purposes

Support

For help with questions, suggestions, or problems, please open this page on your desktop browser

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