Inspeck - Measure Pixels Without Opening DevTools

Measure anything on any screen - no DevTools required.

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Updated Jul 2026 · Added Jul 2026

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What is Inspeck?

Inspeck is a browser extension that lets you measure, inspect, and edit any live webpage's CSS, typography, and colors without opening DevTools. Hover over elements to get exact pixel measurements and spacing, click to inspect computed styles and color contrast, then edit CSS live on the page. It's built for product designers, frontend engineers, and design system teams who need pixel-perfect accuracy without the friction of developer tools.

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Key Features of Inspeck

Hover to measure sizes and spacing gaps
Inspect computed CSS, typography, color, and contrast
Edit CSS live without DevTools
Walk the element tree
Add notes and capture screenshots with annotations
Color contrast checking
Pixel-perfect measurements
100% local - no account or tracking required
Works on any webpage

Who Should Use Inspeck?

Check design implementation against design files

Audit spacing and alignment across product surfaces

Verify color contrast compliance

Quickly inspect exact font sizes and weights

Design system teams auditing drift across surfaces

Frontend engineers inspecting live element values

Product designers validating pixel-perfect builds

Inspeck: Pros & Cons

✓Pros

No DevTools or Inspect Element needed
Instant hover-to-measure functionality
Live CSS editing on the page
Full local processing - no account or tracking
Built-in color contrast checking
Note and screenshot capture with annotations
Computed values shown - not guesses
Works on any screen and any webpage
Free for Chrome and Firefox

Frequently Asked Questions about Inspeck

Do I need to create an account to use Inspeck?

No. Inspeck requires no account and has no tracking. It works 100% locally on your device.

What browsers does Inspeck support?

Inspeck is available as a free extension for Chrome and Chromium-based browsers, as well as Firefox and Zen.

Can I edit CSS changes permanently?

No. Live CSS edits are for inspection and testing purposes on the page during your session. Changes are not saved to the actual website.

Who is Inspeck designed for?

Inspeck is built for product designers, frontend engineers, and design system teams who need to verify pixel-perfect accuracy and inspect live websites.