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Carbon-Calculator

Chrome extension by jonathangrinstead.design · Productivity · Tools

A Chrome extension in Productivity · Tools with 43 users, barely installed.

Every site you visit. This extension can read and change the content of any page you open.

What the developer says, and 2 screenshots

Loading from the Chrome Web Store. Open the listing if it does not appear.

Users
43
Rating
not rated yet
Users, last 14 days
unchanged
Version
1.0
Updated in the store
2025-01-21
Published
2025-01-21
Manifest
V3
Browser access
3 permissions, 3 site patterns

How it has moved

Users
unchanged since 01.09
40-45 · 7 readings
  1. 2026-09-0143
  2. 2026-09-0345
  3. 2026-09-0442
  4. 2026-09-0641
  5. 2026-09-0840
  6. 2026-09-0943
  7. 2026-09-1443
Users
unchanged since 01.09
40-45 · 7 readings
  1. 2026-09-0143
  2. 2026-09-0345
  3. 2026-09-0442
  4. 2026-09-0641
  5. 2026-09-0840
  6. 2026-09-0943
  7. 2026-09-1443

A dot marks a day the store showed a different number. Between them the line carries the last one forward: we read every listing more than once a day and record a point only when something moves. History beyond ninety days is in the app.

What it can reach

Every site you visit. This extension can read and change the content of any page you open.

  • Watch the network requests your browser makes webRequest
  • Run its own code on the pages it can access scripting
  • Act on the current tab, but only after you click it activeTab

The full permission history for this extension

What changed recently

Nothing has moved on this listing since we started watching it.

The publisher

jonathangrinstead.design.

Like this one

Listings the catalog judges closest in what they say they do.

  1. Carbon Footprint Calculator Describes nearly the same job, smaller audience 15 users
  2. Carbolt | The Digital Carbon Footprint Calculator Describes nearly the same job, smaller audience 35 users ★ 5.0
  3. Sustainable Browsing Carbon Calculator Describes nearly the same job, smaller audience 6 users
  4. Pebble - Digital Carbon Emissions Calculator Describes nearly the same job, with an established audience 20k users (last published figure) ★ 4.7
  5. Arboria Carbon Tracker Describes nearly the same job, smaller audience 3 users (last published figure)

The top 5 only. The full comparison, with why each one is close, is on the alternatives page; ranking a whole neighbourhood by your own criteria is in the app.

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Figures come from our own daily pass over the public Chrome Web Store listing, last read on . We publish no contact details for extension developers.