Best alternatives to Quantcast - Tag Inspector (2026)
10 Chrome extensions that do a similar job to Quantcast, closest first. Each shows real store users, its rating, how recently it was updated and how many permissions it asks for.
Quantcast - Tag Inspector today
Quantcast alternatives, compared
- 1
Web Inspector
Use Web Inspector tool as a CSS viewer and website inspector for any page. It is a browser plugin for google chrome inspect element.
≈1K users4.7★ from 10 ratingsUpdated 12 months ago3 permissions- About 2.0× fewer users than Quantcast
- Updated more recently
- Asks for fewer permissions (3 vs 8)
- 2
Spacing Inspector
See margin, padding, border and gaps on any page. Measure distances, audit spacing and copy as CSS or Tailwind.
939 users5.0★ from 1 ratingUpdated 3 weeks ago3 permissions- About 2.1× fewer users than Quantcast
- Updated more recently
- Asks for fewer permissions (3 vs 8)
- 3
KWCAG A11y Inspector
KWCAG 2.1.3 operable criteria measurement tool
≈1K usersNot rated yetUpdated 11 months ago7 permissions- About 2.0× fewer users than Quantcast
- Updated more recently
- Asks for fewer permissions (7 vs 8)
- 4
Font Inspector
Click on any HTML element to get the font info in a popup!
≈10K users3.3★ from 11 ratingsUpdated in the last day4 permissions- About 5.0× more users than Quantcast
- Updated more recently
- Asks for fewer permissions (4 vs 8)
- 5
HTML Inspector
Find hidden information for a target website for OSINT research.
595 users5.0★ from 1 ratingUpdated 21 months ago5 permissions- About 3.4× fewer users than Quantcast
- Asks for fewer permissions (5 vs 8)
- Listed under Tools
- 6
CSS Inspector
Activate this extension to view any information in a CSS-formatted pop-up with one click.
≈1K usersNot rated yetNot updated for 2+ years2 permissions- About 2.0× fewer users than Quantcast
- Updated less recently
- Asks for fewer permissions (2 vs 8)
- Listed under Tools
- 7
Hover inspector
Inspector is the tool which mimic display dimension between selected and hover element. It would be good for designers, QA
≈8K users4.8★ from 33 ratingsUpdated 8 days ago8 permissions- About 4.0× more users than Quantcast
- Updated more recently
- 8
Alignment Inspector
Visually inspect element alignment on any webpage. Compare center, left, right, top, and bottom edges with live pixel measurements.
593 users5.0★ from 2 ratings2 permissions- About 3.4× fewer users than Quantcast
- Asks for fewer permissions (2 vs 8)
- 9
Design Inspector
Hover over any element to instantly inspect fonts, colours, spacing, images and design tokens.
584 users5.0★ from 2 ratings4 permissions- About 3.4× fewer users than Quantcast
- Asks for fewer permissions (4 vs 8)
- 10
Inspect Element
Measure any element on a page - content, padding, border and margin - while you build, debug or review a layout.
≈20K users2.9★ from 35 ratingsUpdated 6 weeks ago3 permissions- About 10× more users than Quantcast
- Updated more recently
- Asks for fewer permissions (3 vs 8)
Quantcast alternatives: questions
What is the best alternative to Quantcast?
By users, the most popular alternative is Inspect Element with ≈20K users and a 2.9-star rating. The closest match by what it does is Web Inspector.
Is there a Quantcast alternative that asks for fewer permissions?
CSS Inspector asks for 2 permissions, against 8 for Quantcast.
How many alternatives to Quantcast are there?
We list 10 close alternatives to Quantcast on the Chrome Web Store, picked by what they do and ranked by how close they are.
Users and ratings are the figures shown on the Chrome Web Store, re-checked continuously. Alternatives are matched on name, description, category and topic. Browse best-of lists by niche.