PageScale Measure
Turn any webpage into a measuring tool. Calibrate a scale from two known points, then click to measure plans, maps, photos or screenshots — in mm, cm, m, in, ft or yd.
How it works
Pick two points on the page whose real-world distance you know — the length of a wall, a map's scale bar, the size of a known object — and enter that distance. PageScale Measure works out how many real-world units correspond to one pixel on your screen. From then on, every line you draw is automatically converted into a real measurement, shown in a clean label right next to it.
Calibrate
Click two points with a known distance and enter the real length and unit.
Measure
Switch to Measure mode and click any two points to get a red line with its length.
Export
Select an area and export a PNG snapshot with your measurements and labels.
📐 How to Use
- Install the extension from the Chrome Web Store.
- Open the page containing the plan, map, or image you want to measure.
- Click the extension icon and choose "Activate on this tab".
- Click two points whose real-world distance you know, then enter that distance and unit (mm, cm, m, in, ft, yd).
- Switch to Measure mode and click any two points — you'll get a red line with a clean length label.
- Click Export, select the area you want to save, and export it as a PNG with your measurements included.
📺 Video Tutorial
🎬 Open this tutorial on its own page →
✅ Features
- On-the-fly scale calibration from any two known points
- Click-to-measure with instant, clean length labels
- Multiple units: mm, cm, m, in, ft, yd — plus combined feet + inches
- Export a PNG snapshot of your measurements and labels
- Compact overlay panel that stays out of your way
- Undo, clear and show/hide controls with handy keyboard shortcuts
- Works entirely in your browser — nothing uploaded, no tracking
🎯 Perfect For
- Floor plans and architectural drawings
- Furniture and room layout planning
- Woodworking and fabrication projects
- Maps and site plans
- Product photos and screenshots
🔒 Privacy & Security
PageScale Measure works entirely inside your browser. There's no analytics, no tracking, and nothing is ever uploaded — exports happen locally on your device. Measurements reflect what's on your screen and aren't a substitute for certified surveying or engineering tools, so always calibrate at the same zoom level you plan to measure at.
With PageScale Measure, any image on the web becomes a ruler. Calibrate once, then measure everything else in seconds — directly in your browser. 📐