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Technical · 6 min read

Last-minute Black Friday website fixes that matter

Panicking before Black Friday? A calm triage of what to fix in the last 2 weeks, 7 days and 48 hours, and what to leave alone.

November 11, 2026

Last-minute Black Friday website fixes that matter

Key takeaways

Fix what stops a customer paying first: checkout, payment methods, forms, shipping information, mobile layout, your promo banner and discount codes.
Redesigns, new apps and theme swaps can wait until December.
Place a test order and look at your site on a phone before anything else.
If you cannot fix something, send a short, specific brief early.

If you are reading this with a knot in your stomach, take a breath. Black Friday is Friday 27 November 2026 and there is still time to fix what matters. Most of the list in your head does not affect whether a customer can pay you, and the fastest way to make things worse now is to change too much.

This is a triage for owners on Shopify, Squarespace, WordPress, Showit or Elementor: what to fix, what to leave alone, and when.

Fix first: anything that loses a sale if it breaks

These Black Friday website fixes earn a place on a last-minute list. If a customer cannot do one of these, nothing else matters.

Checkout: can a stranger add something and pay without getting stuck?
Payment methods: are the ones you advertise switched on and working?
Forms: do enquiry, booking and newsletter forms send, and do you receive them?
Shipping and returns: is the information visible, accurate and clear about holiday cut-offs?
Mobile layout: buttons, banners and menus must work on a phone.
Promo banner and discount codes: is the banner right, does the code apply, and does it stop when it should?
Slow pages: especially the home page, sale collection and top products.

Watch out: A discount code that works on the wrong products costs more than most design problems. Test every code you plan to announce.

Safe late changes and risky late changes

If a change can be undone in seconds and touches one thing, it is probably safe. If it touches how the whole site works, it is not.

Usually safe: updating text and prices, swapping a banner, fixing a broken link or form notification, compressing an oversized image, clarifying shipping information.

Risky, so leave it for December: installing a new app or plugin, swapping or heavily editing your theme, a redesign, moving host, renaming page addresses, or changing how checkout is set up. If you must change an address, set up a redirect so old links keep working; Google’s guide to 301 redirects explains the idea.

Tip: Before any change, make sure you can go back: take a backup and write down what you changed.

The countdown

When	What to do
Last 2 weeks (from Fri 13 Nov)	List what is broken. Fix checkout, payments, forms, shipping information and mobile layout. Test it all.
Last 7 days (from Fri 20 Nov)	Set up the promo banner and discount codes. Remove anything unfinished. Stop adding apps.
Last 48 hours (from Wed 25 Nov)	Change freeze: fix only what is broken. Place a final test order and check the emails.
Thanksgiving, Thu 26 Nov	Look at the site on your phone once, then leave it alone.
Black Friday, Fri 27 Nov	Watch orders and enquiries. Fix only urgent problems.
Small Business Saturday, Sat 28 Nov	Check the banner and message suit the day.
Cyber Monday, Mon 30 Nov	Check stock, codes and shipping information again.

Smiling woman working on a laptop at a cafe table — Most problems show up when you look at your own site the way a customer would.

Not sure what is realistic?

If you have a list and no time, tell us what is broken or needs to change and we will reply with what is realistic and a date before we start. Send us a message.

How to test, in order

Place a test order. Go through the whole journey on a phone: choose a product, apply a discount code, pay, and receive the confirmation. Use your platform’s test mode if it has one, or place a small real order and refund it.
Look at it on a phone. Check the banner, menu, product pages, buttons and forms.
Check your emails. Order confirmations and enquiry notifications should arrive, look right and not land in spam.
Check speed. Run your home page and sale page through PageSpeed Insights. Look for big problems such as huge images, not a perfect score. web.dev’s guide to Core Web Vitals explains the measurements.

A short note by platform

Each platform does these checks differently, so use its own help pages for exact steps.

Shopify: Shopify’s performance guidance for themes explains common causes of slow stores. See also our product page checklist.
Squarespace: use Squarespace’s own help centre for commerce, payments and mobile settings.
WordPress: take a backup first; the developer handbook has a guide to backups, and the documentation covers the rest.
Showit: use Showit’s help centre, and check the mobile design separately from the desktop one.
Elementor: the Elementor help centre covers responsive editing. For a slow site, see our Core Web Vitals checklist.

When to get help, and what to send

Ask when something is broken and you do not know why, when a fix touches checkout or payments, or when you have made it worse. The sooner you ask, the more options there are. Send:

Your platform and a link to the page.
What you expected, and what happens instead.
A screenshot or short screen recording, and the phone or browser used.
Which codes or products are involved, and when your sale runs.
Whether you have a backup, and anything you changed recently.

Our guide to briefing a build goes deeper, and our launch checklist is worth a read afterwards. For cover after the rush, see our care plans.

Woman using a laptop at a table during an online meeting — A short call to walk through a problem often beats a long email.

Your next step

Tell us what needs to change and by when. We are a small owner-led studio working on Shopify, Squarespace, WordPress, Showit and Elementor sites, and we reply with what is realistic and a date before starting. If we are full, we will say so plainly. Start at contact, and see how we work for what happens next. An NDA is available. We do not run ads, SEO or social, only the website.

Frequently asked questions

Is it too late to change my website for Black Friday?

No, as long as the changes are small and focused on things that stop a sale. Leave redesigns and new apps for December.

Should I install a new app or plugin now?

Usually not. New apps can slow pages or clash with checkout, and there is little time to find out.

What if something breaks on Black Friday itself?

Undo your last change if you can, and send the details above to whoever builds your site.

What can safely wait until after Cyber Monday?

Redesigns, theme changes, new layouts and anything cosmetic. Make a list and tackle it in December.

Sources and further reading

Shopify: theme performance best practices — what slows a store down.
web.dev: Core Web Vitals — plain explanations of speed measurements.
PageSpeed Insights — free speed test for any page.
WordPress developer handbook: backups — how to back up a WordPress site.
WordPress documentation — official help for site owners.
Elementor help centre — official guides for Elementor sites.
Google: 301 redirects — keeping old links working if a page address changes.

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