The 10 usability heuristics in practice

0:00 The 10 usability heuristics

Have you ever tapped a button, seen nothing happen, and tapped it again? And then discovered you'd ordered two of something? That tiny moment of confusion has a name, and a fix. In the nineteen nineties, usability expert Jakob Nielsen published ten general principles for interface design, called usability heuristics. Three decades later, they're still one of the fastest ways to find problems on any page. In this lecture, you'll learn all ten with marketing examples, how to run a quick heuristic review, how to score severity, and where this method falls short.

0:40 Why it matters

Why should a marketer care about a checklist from the nineties? Because heuristic reviews are fast and cheap. One person with a phone can review a landing page in thirty minutes and find the problems that are quietly wasting ad spend. No recruitment, no special tools. Think of heuristics like a pilot's pre-flight checklist. The pilot knows how to fly. The checklist makes sure nothing obvious gets missed when everyone's in a hurry. Before a campaign launch, you're in a hurry too. And because the ten heuristics are shared vocabulary, they also end arguments. Instead of saying I don't like this pop-up, you can say this breaks user control and freedom, because the close button is hard to find. That turns taste into a reasoned, fixable problem.

1:35 Heuristics 1 to 5

Let's go through the first five. One, visibility of system status. Keep people informed, like showing sending, then thanks, check your inbox, after a form submit. Two, match between the system and the real world. Use your customers' words. Book a call, not initiate consultation workflow. Three, user control and freedom. Give people a clear way to undo, go back or close, like a close button on a pop-up that's actually findable. Four, consistency and standards. Links look like links, and buttons look the same across the site. Five, error prevention. Stop mistakes before they happen, with a date picker instead of free text.

2:20 Heuristics 6 to 10

Now six to ten. Six, recognition rather than recall. Show options instead of making people remember them, like displaying the chosen plan at checkout. Seven, flexibility and efficiency. Help newcomers and regulars, with autofill and saved details. Eight, aesthetic and minimalist design. Remove anything that competes with what matters, often one primary call to action per section. Nine, help users recognize, diagnose and recover from errors. Instead of error code fifty-one, say your card was declined, please try another card. And ten, help and documentation. Put answers where questions arise, like an FAQ right beside pricing.

3:02 Running a heuristic review

Here's how to run a review. First, define one task, like register for the webinar on mobile. Second, walk through it as a new user would, on the device your audience actually uses. Third, log every problem: where it happens, which heuristic it breaks, and a suggested fix. Fourth, rate severity. A common scale runs from zero, not a problem, to four, blocks the task. Think about frequency, how many people hit it, impact, how badly it hurts, and persistence, whether it keeps happening. Fifth, if you can, have two or three people review independently. Different people spot different problems.

3:45 Worked example 1: phone case store

Worked example one. A small online store selling phone cases. The task: buy a case on mobile. After tapping add to cart, nothing visibly changes, so people tap again. That's heuristic one. Shipping is labeled fulfillment fee. That's heuristic two. Some buttons are green and rounded, others gray and square. Heuristic four. The phone model is typed as free text, causing wrong orders. Heuristic five. And card errors say transaction failed, code fifty-one. Heuristic nine. Each fix is small. A cart badge and a toast message. The word shipping. One button style. A model dropdown. A human error message.

4:28 Worked example 2: agency pre-launch (illustrative)

Worked example two, a business scenario with illustrative details. A digital agency in Manchester is about to launch a paid campaign for a client's online course. There are twenty-five findings from the review and one week to launch. What do they fix? They sort by severity. At the top: the enroll button is hidden behind a cookie banner on small phones, and the payment error just says failed. Both block the task for many people. Lower down: an inconsistent icon in the footer. They fix the top five before launch and schedule the rest. The campaign launches on a page that works.

5:12 Watch me do it: the review sheet

Watch me do it. I open a shared sheet with columns for task, screen, problem, heuristic, frequency, impact, persistence, severity and fix. My task: buy a gift card on Android from a Facebook ad. I walk the task and log only what I see. Tapped buy, spinner never stopped. That's heuristic one. I rate frequency two, impact three, persistence two. My severity formula weights impact the most and gives me a four. Next row: the delivery date uses a free text box. Heuristic five, severity two. After fifteen minutes, I sort by severity and highlight the top three fixes.

5:55 AI and the limits of heuristics

One more tool. You can paste screenshots into a multimodal AI assistant and ask it to suggest possible heuristic violations. It's good for breadth. It might notice jargon or a missing confirmation message. But it also invents problems and misses context, like how your customers actually talk. So treat it as an extra reviewer whose findings you confirm on a real device. And remember the biggest limitation of heuristic reviews in general. They're expert judgment, not user evidence. They miss problems specific to your audience, and they create some false alarms. Combine them with usability testing and analytics.

6:38 Severity turns a list into a plan

Let's get more precise about severity, because that's what turns a list into a plan. Ask three questions about each problem. How many people hit it? That's frequency. How badly does it hurt them? That's impact. And does it keep happening, or is it a one-time annoyance? That's persistence. In the lesson sheet, a simple formula weights impact the most and maps the result onto a zero to four scale. The exact weights matter less than agreeing on them before the review. Then sort. A missing confirmation on a paid-traffic form will almost always beat a slightly inconsistent footer icon.

7:21 Common mistakes

Common mistakes. Evaluating on desktop when your customers are on phones. Listing problems without severity, so the team fixes trivial things first. Writing opinions instead of observations. Treating the heuristics as rigid laws instead of guides. And skipping real user testing because we already did a heuristic review. How do you know your review worked? Track open high-severity issues over time, and watch whether the specific problems stop showing up in recordings, support tickets and test sessions.

7:54 Recap and try this now

Let's recap. Nielsen's ten heuristics give you a fast, structured way to review any page or flow. Define a task, walk it on the right device, log each problem with its heuristic, severity and fix, and prioritize by frequency and impact. Use AI as an extra reviewer, not a judge. And always validate with real users. Try this now. Pick one key task on your site, like signing up or booking. Walk it on your phone, log at least six problems in the review sheet from the lesson, and choose the top three to fix before your next campaign.