One way to make client sites fast, whatever they were built on
The problem with speeding up client sites is rarely one site. It is that the next one runs on something else, and the fix you learned last month does not transfer. Below is what we measured across our own audit base — how many different platforms it covers, what moved, and where this stops being useful to you.
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What we measured
Our own audits — the original page against the same page served through WebSpeed. The sample and the date are part of the result, not small print.
45 audited sites that cleared the publishing gates measured 2026-08-04
What this does not say. Breadth is not depth. Ten platforms in the sample means the same delivery layer handled ten different stacks — it does not mean every stack gains equally, and the per-platform pages show where it lands better and worse. Two gaps worth naming before you sell this to a client: we have audited only five stores so far, which is far too few to tell you anything reliable about ecommerce, and nothing here measures what happened to anyone’s traffic or revenue. What we can hand you is a before/after per site, produced the same way every time.
What WebSpeed does about it
Each one is independent and can be switched off for your domain — nothing here is all-or-nothing.
One integration per site, not one project per stack
A DNS change puts WebSpeed in front of the site. Nothing is installed, so onboarding a client is the same work whether they run WordPress, a hosted builder or a framework — and you are not maintaining a different plugin stack per account.
A public before/after you can send to the client
Every site gets its own audit page with the original and the optimized numbers on mobile and desktop, re-runnable on demand. It is the part of this that survives a client asking “did it actually do anything” three months later.
Switch off anything a client’s theme dislikes
Optimizations are per-domain and individually reversible. When one client’s build reacts badly to a specific change, you turn that one off for them and the rest keeps working — you do not lose the whole thing for one site.
One plan across the portfolio
Growth covers multiple sites on one invoice with priority cache, so adding a client is a line item rather than a new contract.
White-label on request
The standard report carries our name and the audit page lives on our domain. If that does not fit how you present work, we arrange a white-labelled version with you — it is a conversation rather than a toggle, so raise it before the first client rather than after.
The portfolio is the problem, not the site
Speeding up one site is a solved problem. There is a plugin, a guide, a checklist, and someone on the team who has done it before.
What does not survive contact with an agency is the second site. It runs on something else. The plugin does not exist there, the guide assumes a CMS you do not have, and the person who did it last time is now the only person who can do it again. Multiply that by a client list and speed stops being a technical task and becomes a scheduling one.
That is the specific thing a delivery layer changes. It works on the page as delivered, so what it does is the same regardless of what produced the page — and the work of adding a client is a DNS record rather than a project.
What we measured
The figures above come from our own audit base, and the sample size and date are stated with them. The one that matters here is the number of different platforms in it: the same pipeline, unchanged, across every one of them.
The number of sites where the mobile score went down is printed beside it, because that is the question you should be asking on behalf of a client rather than the one a vendor volunteers. Alongside it, the count of sites that started in Google’s “Poor” band and left it — the single most reportable outcome in the set, because it is the band where a client’s competitors are ranked above them for reasons the client can actually fix.
If it is just you
A one-person studio has the same problem as a twenty-person agency and less room to absorb it. You cannot keep a specialism in six platforms current, and the hour you spend re-learning where the render-blocking CSS lives on a builder you touch twice a year is an hour nobody pays for.
The part that changes for you specifically is the reporting. A client who asks whether the work was worth it gets a page with their own numbers on it, produced by a third party rather than by the person invoicing them — which is a different kind of answer than a screenshot you made. There is no minimum number of sites: Fast covers one, and Growth only becomes cheaper than several Fast plans once you actually have several.
Where this is not the answer yet
One place, and it is better you hear it from us.
Stores. Five is not a sample. We can run the pipeline on a shop as easily as anything else, but we cannot show you a number that means anything about ecommerce, and the small one we have runs below the rest of the base rather than above it. If shops are most of your list, treat this as unproven for your case and check one of them for free instead of taking our word for it.
What to do with this
Run the free check on the client site you are least happy with. It takes about a minute, it produces the same before/after page you would send them, and it costs nothing to find out that we are not the answer for that site — which happens, and the report says so when it does.
Agencies & studios — questions
Do you white-label this?
On request, yes. It is not a switch in the product — we arrange it with you case by case, so ask before you commit rather than after. What comes as standard carries our name on the report and publishes the audit page under our domain, which suits some agencies and disqualifies us for others.
What happens when a client leaves us?
The site is served through us by a DNS record, so control follows whoever controls DNS. Reverting it puts the original site back exactly as it was — nothing is installed on their side to uninstall.
Which platforms does it actually work on?
Any of them, in principle — the pipeline works on the delivered page, not inside a CMS. What differs is how much there is to gain, and that is per site rather than per platform. The platform pages list what we measured on each, and the free check answers it for one specific site in about a minute.
Can I resell it?
Talk to us. There is no reseller programme with terms and margins to point you at yet, and inventing one in a FAQ answer would be worse than saying so.
My clients are mostly shops. Is that covered?
Honestly, not yet — as evidence. We have audited five stores, which is too small a sample to make a claim from, and the median gain in it was lower than the rest of the base. The pipeline runs on them the same way; we just cannot show you numbers that mean anything yet.
Pick how hands-off you want it
The before/after check is free to run; it isn’t one of these plans. Choose a plan when you’re ready to make the speed-up permanent — or buy the report once and apply it yourself.
Fast
- The whole optimization pipeline, live
- One site
- Proxy or on-site SDK, no code changes
- Cached delivery keeps your site up during origin outages
- Priced by monthly visits, scales with you
Growth
- Everything in Fast, across multiple sites
- Priority cache — your pages stay warm
- Support with a named contact
- One invoice for the whole portfolio
Custom
- Everything in Growth
- A config built by hand for your site
- What only you can change, written up for your team
- Set up, measured and maintained by us
Subscriptions start with a 14-day free trial (Fast and Growth), then run for a minimum of 6 months — you commit only after the trial. Fast is priced by monthly visits; indicative launch pricing.
Not ready for a subscription?
Buy the Audit once and apply it yourself — the same findings the pipeline acts on, written up as instructions.
- The same fixes Fast applies, written up as a guide you run yourself
- Server settings, code changes and ready-to-paste head snippets
- Before/after PageSpeed from the free check (PDF / HTML / MD)
- Re-issued free for a year as your site changes
See your own before / after
Paste your URL for a free PageSpeed comparison on mobile and desktop. No signup, about a minute.
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.
Other outcomes: Search traffic , Conversion , Bandwidth & weight , Carbon footprint
By platform: WordPress , Duda , WooCommerce , Wix , Tilda , Bitrix , Squarespace