Carbonless
Measure and reduce your website carbon
Carbonless launched on August 12, 2026 with 8 votes, #1,241 of 23,274 launches that month and more than 90% of that year's launches.
What it does
Scan any page with a real browser, see what it costs the planet per visit, and get a list of what to fix ordered by how much each change saves.
A real browser loads your page twice, once cold and once with a warm cache, and measures every request on the wire. You get a CO₂e figure per visit and a list of what to fix, ordered by how much each change actually saves. Figures are estimates, not meter readings. How we calculatefrom carbonless.cc
Does a similar job
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Website Carbon Calculator2019 · websitecarbon.com · ▲105Find out the how much CO2 your website emits
Carbon Neutral Website2023 · carbonneutralwebsite.org · ▲107Calculate and optimize web page carbon footprint
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