Insights
Short, practical articles on making pages lighter, choosing a green host and showing your results honestly.
Lighter websites6 min read
A lighter page loads faster and has a smaller estimated footprint, and it doesn't have to look plainer. Practical, design-friendly ways to cut images, video, fonts and scripts.
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Lighter websites6 min read
One hour, one page, six steps: measure, fix the biggest images, prune plugins and embeds, trim fonts, check caching, then re-check and compare.
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Lighter websites5 min read
Many pages download code they never run. How to find unused JavaScript with Chrome's Coverage panel and PageSpeed Insights, and what to do about it.
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Lighter websites5 min read
Gzip and Brotli shrink HTML, CSS and JavaScript before they travel. How to check your site uses them, why images don't benefit, and what a test counts.
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Lighter websites6 min read
Before-and-after checks only mean something if you compare like with like. How to use report history, PDFs and re-checks to show real progress.
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Lighter websites5 min read
Video can be the heaviest thing on a page, even before anyone presses play. How poster images, preload settings and click-to-load embeds keep it in check.
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Lighter websites6 min read
Preload, prefetch and preconnect can make a page feel faster, or fetch files nobody uses. What each hint does and how to check what your theme adds.
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Lighter websites6 min read
A lighter page is often a faster one, but not always. How Core Web Vitals relate to page weight, why they can disagree, and which number each tool reports.
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Lighter websites5 min read
A per-view carbon estimate only counts when someone loads the page. What that means for old pages, what the model leaves out, and where to focus instead.
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Badges and trust5 min read
GreenTracer offers two website badges. One shows a page's carbon grade, the other your host's listing. What each says, when it dates, and how to word it.
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Lighter websites6 min read
No one can meter the carbon of one page view. What the Sustainable Web Design Model assumes, what GreenTracer adds, and why the estimate still helps.
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Lighter websites6 min read
Brochures and PDFs linked from a page aren't in its carbon test, but everyone who opens one downloads it. How to keep them lean, and when HTML is better.
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Lighter websites6 min read
Page builders and big themes often load styles for features a page never uses. How to measure unused CSS with Chrome DevTools and what you can do about it.
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Lighter websites6 min read
The big banner at the top of a home page is often its heaviest part. Keep a strong first impression with one well-sized image, a lighter slider or video.
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Lighter websites5 min read
A few icons can bring a whole icon font with them. How to check what your icon library adds, and why inline SVG is often lighter and more accessible.
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Green hosting5 min read
A CDN can make a site faster, but it only lowers a carbon estimate if it sends fewer bytes. What it changes, what it doesn't, and the hosting check.
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Lighter websites6 min read
Check the same page twice and the result can change. Why live pages and lab tests vary, and how to compare checks so real changes stand out.
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Lighter websites6 min read
Each GreenTracer grade is a limit in grams, which works out as a page weight. The kilobytes for every grade, where they come from, and how to budget.
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Lighter websites6 min read
Maps, chat widgets, booking tools and social posts often load before anyone uses them. How click-to-load previews and lazy iframes hold them back.
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Lighter websites6 min read
How Cache-Control lets returning visitors skip files they already have: max-age, immutable, no-cache vs no-store, and why caching won't change your grade.
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Lighter websites6 min read
Which image format should you use? A plain guide to JPEG, PNG, WebP, AVIF and SVG: what each is good at, browser support today, and when to add a fallback.
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Lighter websites6 min read
Three ways to see how much data your page sends: Chrome DevTools, PageSpeed Insights and a GreenTracer check, plus what the numbers mean for your grade.
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Lighter websites6 min read
Photos are often the heaviest part of a page. How to find oversized images, choose a modern format, size them for each screen and load the rest later.
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Lighter websites5 min read
Brand fonts can add more to a page than you expect. Keep your typography and download less: fewer files, WOFF2, subsetting, self-hosting and smart loading.
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Green hosting5 min read
A green host lowers a GreenTracer estimate by about 18%, not to zero. What the hosting check means, what it doesn't prove, and why page weight matters more.
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Lighter websites6 min read
A carbon report gives you an estimate, a grade and a hosting status. They answer different questions. Here is what each one means, what the test includes, and what to do next.
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Lighter websites6 min read
The same page can get a B on mobile and a D on desktop. The usual reason is one large image chosen for wide screens. How to find it, and how to send each screen the size it needs.
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Lighter websites6 min read
A carbon test doesn't click your cookie banner, so tags that wait for consent aren't counted, but visitors who accept still download them. How to see what your tags really add, and trim them.
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Green hosting6 min read
“Listed as green” and “Grade B” answer different questions. Here is what a green-hosting listing and a website carbon rating each tell you, how they interact, and how to describe them honestly.
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Lighter websites6 min read
A website carbon test turns the data one page transfers into an estimate of emissions per visit. Here is what goes into that number, how to read it, and the questions it can't answer.
Read articleThe free checker estimates the carbon of one page view on a page, gives it a grade and tells you whether its host is listed as green.
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