Why is your website slow, and does it matter?

The short answer: a slow website is usually caused by things you can see and change yourself, and the biggest one by far is photos uploaded at full size straight from a phone or camera. It matters because visitors give a page only a few seconds before they give up, and because Google pays some attention to speed too. But before you fix anything, test it properly. Many new website owners think their website is slow when it is fine, and the reverse.

Quick answer

• The most common cause of a slow website is big photo files. A phone camera photo can be ten times larger than a web page needs.
• Other everyday causes: videos that play automatically, pages crowded with widgets and effects, and slow hosting.
• It matters because visitors leave slow pages before they load, and every one of them leaves without seeing what you offer.
• Test like a stranger: open your website on a phone using mobile data, not on your own computer, which remembers your website and flatters it.
• Most fixes are settings and uploads inside your website editor. No code, and usually no cost.
• Good enough is good enough. If your pages show up within a couple of seconds on a phone, move on to things that matter more, like what the pages say.

How do you know if your website is actually slow?

Do not judge it from your own computer. After the first visit, your computer keeps copies of your website's biggest pieces, so every visit after that skips most of the downloading. You are seeing the best case that no new visitor gets. Your wifi is probably also faster than the phone signal a real visitor is on while they search for a plumber from their car.

The honest test takes two minutes. Take a phone, turn off wifi so it uses mobile data, and open your website. Better yet, ask a friend who has never visited it to do the same and tell you what happens. Count in your head. If the page is readable within a couple of seconds, you do not have a speed problem. If you are still watching a blank screen at five or six, you do.

If you want a second opinion, Google offers a free tool called PageSpeed Insights. You paste in your website address and it reports how fast the page loads on phones and computers. One warning: the report is written for web developers, and it will list technical suggestions that sound alarming. You are not expected to act on that list. Look at the overall picture, confirm what your phone test told you, and ignore the rest.

While you have that phone out, it is worth checking how the website looks as well as how fast it loads. Our guide on checking your website looks right on a phone covers that side.

Why does a slow website matter?

Because visitors do not wait. Someone who taps your website from a search result is comparing options, and the next option is one tap back. A page that keeps them staring at a blank screen does not read as loading. It reads as broken. They do not know how good your work is yet, because the page showing it never arrived.

Speed is also part of the first impression itself. Before a visitor reads a single word, the website has already told them something by how it behaves. A page that appears quickly and settles down feels looked after. A page that lurches in piece by piece while they wait feels neglected, and people quietly transfer that feeling to the business behind it.

And yes, Google notices speed too. It is one signal among many that search engines use when deciding what to show, which is a real reason to care and a bad reason to panic. A clear page about what you do and where you do it counts for more than a perfect speed score. Our guide on getting your new website to show up on Google puts speed in its place among the things that actually move the needle.

What makes a website slow?

Almost always one of these, and the first one wins by a mile:

1. Full-size photos. A photo straight off a phone camera is made for printing, not for a web page. It can carry ten times the file size the page needs, and it looks identical to visitors at a fraction of the size. Ten of those on one page and even fast connections crawl. Our guide on what photos you need for your website covers getting them ready before they go up.
2. Videos that play automatically. Video is the heaviest thing a page can carry. One background video that starts by itself can outweigh everything else on the page combined.
3. A crowded page. Every map, feed, chat bubble, animation, and fancy font is one more thing to download before the page settles. Each one seems small. Eight of them are not.
4. The hosting. Every website lives on a computer somewhere that sends your pages out to visitors. If that service is overloaded or far away, every page starts late no matter how light it is. With a website builder, hosting is part of the package and generally not your problem. If you are curious what it even is, our guide on what web hosting is explains it in plain words.
5. The visitor's connection. Sometimes the website is fine and the visitor is on one bar of signal in a parking garage. You cannot fix that, which is exactly why the goal is a light page that survives a weak connection, not a perfect one.

How do you fix a slow website?

Start with photos, because that is where the weight is. Most website builders shrink photos for you when you upload them, but they can only do so much with a huge original, and older uploads may have gone up before you knew any of this. Re-upload your biggest photos at a sensible size, or run them through a free photo resizer first. This one habit fixes more slow websites than everything else combined.

Then lighten the page. Set any video to play only when clicked, or replace it with a photo that links to the video elsewhere. Walk through your homepage and remove anything you added because it looked impressive rather than because visitors use it. A page that does one thing clearly beats a page that does eight things slowly.

Hosting comes last, and with a website builder it is usually already handled. Only suspect it if your pages are light, the photos are fixed, and the website still drags on every device you try. That combination is rare.

Then stop. Speed has a finish line, and it is "fast enough that nobody notices it". Once your pages show up quickly on a phone, more hours spent chasing scores are hours taken from the words, photos, and pages that actually win you customers.

How fast is fast enough?

Here is a working rule that needs no tools: on a phone, on mobile data, your page should be readable before the visitor wonders whether something is wrong. In practice that is a couple of seconds. Nobody ever chose a plumber because the website loaded in one second instead of two. Plenty of people have left because it took ten.

So treat speed like you treat spelling. It has to be good enough not to get in the way, and past that point, nobody is handing out prizes. Check it when the website is new, check it again after you add anything heavy like a gallery or a video, and otherwise leave it alone. If you enjoy having a number to watch, the better ones to watch are visits and enquiries, and our guide on how to know if your website is working covers those.

A slow website is not a mystery and it is not a punishment for being a beginner. It is nearly always big files doing what big files do, and an afternoon with your photo uploads fixes most of it. And if you are still before all of this and the website does not exist yet, start with a plain description of your business and get a website built around it.