Speed optimization
What slows a site down depends on what built it — and what fixing it is worth depends on what you need from the site. Pick either way in, and check your own URL for a measured before/after.
By what you need from it
What speed actually buys — each page states what we measured, and what the measurement does not prove.
Speed up your site to win back search traffic
Core Web Vitals are a ranking signal, and the band that matters is “Poor”. Here is what leaving it looked like across the sites we audited — and what the numbers still do not prove. Run the free check on your own site.
Faster pages, fewer people lost on the way
Slow pages lose buyers before they arrive. We can show you the seconds we removed from real sites; what those seconds are worth on yours is a projection, and we say so. Run the free check.
Send half as much data for the same page
The same page, the same content, roughly half the bytes on the wire. Here is what we measured across our published cases, including the sites where it went the other way. Run the free check on yours.
A lighter site is a lower-carbon site
Data transfer costs energy, and we can show you exactly how many bytes came off. The grams are a published model applied to that measurement, and we keep the two clearly apart. Run the free check.
By who you are
Same service, read from where you sit — what it changes for the way you work.
By what your site runs on
Speed up WordPress without plugins or code changes
We audited 560 WordPress sites and found the same three bottlenecks. See what they cost your site — free before/after PageSpeed comparison, no plugin to install.
29 → 63 best mobile gain · 560 audited sitesSpeed up Duda sites without a rebuild
We audited 154 Duda sites. The bottleneck isn't CSS — it's scripts running while the page draws. Run the free tool on your own Duda website and see the before/after in about a minute.
43 → 78 best mobile gain · 154 audited sitesSpeed up WooCommerce without plugins or a rebuild
We audited 544 WooCommerce stores. On 88% of them the head blocked the first paint, and on 89% scripts held up the parser. See what it costs your store — free before/after PageSpeed comparison, nothing to install.
39 → 91 best mobile gain · 544 audited sitesSpeed up a Divi site without rebuilding it in another builder
Across 72 audited Divi sites, one defect showed up on all but one and a second on all but four. See what they cost your site — free before/after PageSpeed comparison, nothing installed.
32 → 70 best mobile gain · 72 audited sitesSpeed up Wix — no rebuild, no migration
We audited 361 Wix sites. 358 of them shipped scripts that block the browser while it draws the page. See what that costs your site, free, in about a minute.
30 → 68 best mobile gain · 361 audited sitesSpeed up Tilda without rebuilding your pages
We audited 214 Tilda sites. 99% loaded third-party scripts eagerly, and 97% carried a head padded with assets the page never used. See what it costs your site, free.
56 → 87 best mobile gain · 214 audited sitesSpeed up Bitrix without a developer or a redeploy
We audited 97 Bitrix sites. 92% shipped a render-blocking head and 68% shipped images with no dimensions. See what it costs your site — free before/after comparison.
53 → 91 best mobile gain · 97 audited sitesSpeed up Squarespace without moving off Squarespace
We audited 1,032 Squarespace sites. 80% shipped their CSS as a pile of small files, and 83% ran scripts while the page was still drawing. See what it costs your site, free.
38 → 60 best mobile gain · 1032 audited sitesBuilt on something else? WebSpeed optimizes at the HTML level, so it works on any platform — these are simply the ones we have written up. Check your URL below.
See the numbers for your own site
A free before / after PageSpeed comparison on mobile and desktop. No signup.
That doesn’t look like a website address. Enter a domain — for example example.com or https://example.com/page.
No signup. See your before/after PageSpeed score in about a minute. What the report shows