Frontend Hero — Page Ruler
Pixel-perfect measurements on any page. Click and drag.
Draw a ruler on any page and get exact width, height, and position values. Snap-to guides lock onto element edges automatically. Resize and reposition freely.
11 developer tools. One extension. $98 $59 one-time · 3-day money-back guarantee
Measure anything with confidence
Snap-to-Element Precision
The ruler locks onto element edges automatically. No manual alignment — just accurate measurements every time.
Resize, Move, Remeasure
Drag edges to resize, reposition freely. Measurements update in real-time as you adjust.
Every Value You Need
Width, height, top, left, and distances between elements. Implement designs to spec with confidence.
Get started in 3 steps
From install to your first use in under 30 seconds.
Activate Page Ruler
Click the Frontend Hero icon and select Page Ruler.
Click and drag
Draw a rectangle anywhere on the page. It snaps to element edges automatically.
Read the values
Width, height, and position update in real-time. Drag edges to fine-tune.
Who uses Page Ruler
Frontend Developer
Verify your implementation matches the design spec — measure directly on the live page.
Designer
Check spacing and alignment between elements during code review.
QA Engineer
Verify that elements meet exact sizing requirements before sign-off.
"Page Ruler with the snapping guides is way better than the janky free ruler extensions I was using before. The color picker outputting Tailwind classes directly saves me constant trips to the docs."
Marcus Webb
Senior Frontend Engineer
One-time purchase. 11 tools included. 3-day money-back guarantee.
Page Ruler + 10 more tools for $59
Every Frontend Hero license includes all 11 tools. No add-ons, no upsells.
CSS Scanner
Inspect any element's styles in one hover
Font Explorer
See every font on any page at a glance
Color Palette Explorer
Extract the full color palette from any site
Color Picker
Pick any color — copy as HEX, RGB, HSL, or Tailwind
Tailwind Scanner
Inspect, toggle, and edit Tailwind classes live
Tailwind Converter
Click any element, get its Tailwind classes
Element Screenshot
Click any element, get a perfect screenshot
Asset Spy
Download every image from any page — even hidden ones
Console Spy
Monitor console output without opening DevTools
Text Edit Mode
Change any text on any page — without code
Get Frontend Hero Today
One license = One browser. Use on multiple devices? Get multiple licenses.
Each license works on one browser. Need team licenses? Email sales@frontend-hero.com for volume discounts.