This Tool Tests your UI Design Skills

DesignCourse| 00:05:15|Jun 4, 2026
Chapters12
Introduction to why relying on AI for perfect design can lead to bad results and the purpose of the built in evaluation tool.

DesignCourse’s free UI test tool lets you spot bad design by evaluating white space, contrast, color, typography, scale, and alignment.

Summary

DesignCourse’s host introduces a free, no-account UI test tool designed to gauge whether your design judgment holds up against real-world examples. The core idea is to click through six fundamentals—white space, contrast, color, typography, scale, and alignment—and mark any elements that are applied incorrectly to a design on the right. He walks through several scenarios, starting with a drop-down menu and moving to a pricing comparison, showing how each mistake is identified and how the tool visually updates to reflect improvements. Notably, contrast is flagged when black text sits on a dark gray background, and typography issues pop up when a condensed font clashes with an extended one. The host also demonstrates how scale and alignment affect visual hierarchy, such as oversized branding elements and misaligned footer content. After making fixes, users can compare before-and-after versions to see the cumulative impact of subtle changes across multiple pages. The video emphasizes that most UI problems are less obvious at first glance, and the exercise is designed to sharpen your ability to spot bad design without relying on AI alone. He hints at expanding the test library and even inviting others to contribute their own tests, inviting viewers to subscribe for future updates.

Key Takeaways

  • The tool tests UI fundamentals—white space, contrast, color, typography, scale, and alignment—against a design on the right side of the canvas.
  • Contrast issues are flagged when text color contrasts poorly with the background, such as black text on a dark gray background.
  • Typography problems are shown when fonts with different characteristics (condensed vs extended) are used inconsistently within the same design.
  • Scale and alignment are demonstrated with examples like oversized header text versus smaller partner copy, and misaligned footer elements that disrupt visual flow with the brand logo for reference.

Who Is This For?

Essential viewing for UI designers and front-end developers who want to sharpen their ability to critique designs without overreliance on AI—great for those building or evaluating UI systems and style guidelines.

Notable Quotes

"Can you spot bad vibe design? That's a very important question if you're not skilled in UI design because if you're just relying on the AI to spit out perfect design, you're going to have a bad time."
Opening framing question that motivates the need for the test tool.
"The way this works is there's a UI of some sort in this right canvas area. And then over here, we have six different UI fundamentals."
Describes the tool layout and the six fundamentals.
"It updates that to the correct color."
Demonstrates real-time improvement of a color mistake.
"These subtle changes make a big difference and especially when you add them all up accumulatively across an entire design, across multiple pages, this is what's going to kill the quality of your UIs if you can't spot this stuff."
Emphasizes why spotting small issues matters for overall design quality.
"I think there’s like 15 or 20 or something. And just see I go through these and there is a point system, so you can kind of score yourself."
Mentions the scoring system and the scope for more tests.

Questions This Video Answers

  • How can I use a free UI design test to improve my critique skills?
  • What are the most common UI pitfalls in typography and color?
  • Can a no-account design test really help me raise my design game?
  • What is the impact of proper alignment on UI readability?
  • How do you balance scale and typography for responsive layouts?
UI DesignUI TestingDesignCourseContrastTypographyWhite SpaceColorScaleAlignment
Full Transcript
Can you spot bad vibe design? That's a very important question if you're not skilled in UI design because if you're just relying on the AI to spit out perfect design, you're going to have a bad time. I'm going to show you with this tool that I made a few years ago, which is more relevant than ever, how to determine if you're actually, you know, you have a good ability to determine what is good or bad design. This is 100% free. It doesn't even require an account. You can just click the link and start taking it. But, watch a couple of of these examples and me walking you through them so you understand how to do it. So, we'll take this one right here, drop-down menu. So, the way this works is there's a UI of some sort in this right canvas area. And then over here, we have six different UI fundamentals. We have white space, contrast, color, typography, scale, and alignment. Your goal is to choose the options that you think are incorrectly applied to the given design on the right. So, let's take this I step by step. White space. White space is the empty space around elements in your design. It's a fundamental. And if you don't understand what it is or how, you know, what what correct white space is, you're going to have a hard time. In terms of white space, I don't think there's any issues here. You know, nothing's spread out way too far, nothing's too close. What about contrast? Yes, contrast right here, risk management, black text on a dark gray background is bad. So, I'm going to click on contrast. Now, what's cool, you click on it, it lets you know if you're right. And if you are right, it will make an improvement to that contrast. We can see it's much better now. Now, what about color? I think color is fine here. What about typography? Bad typography. Why? Because Home Services of Fact is a condensed font, but the rest of this font right here is more of like an extended font. So, I'm going to click typography and notice how it updates that. Now, what else? Now, the way to know if there's something else to click is if it didn't complete the test. So, there's still something wrong. And so, the other remaining two are scale and alignment. Scale. All right, the size of things, the size of your topography. Does it make sense? Well, I think HomeAdvisor in fact is way too large compared to Crypto Company. So, one of them either has to shrink or the other one has to get larger for better scale. So, I'm going to click scale. And there we go. So, now if we zoom out, this is a much better interpretation. If you click on show more or show before rather, this is the original and this is after fixing things. So, now you can continue on to the next one. So, what about footer design? Okay, here's a footer, a very simple, maybe like a tablet-based footer. Any issues with white space? Nah, I don't think so. What about contrast? Nah, what about color? Yes. This purple against this shade of kind of like a bluish doesn't look It just looks terrible. So, let's click that. And now it updates that to the correct color. What about typography? I think that's all good. It's all consistent looking, the type itself. What about scale? I think that's good. We have good visual hierarchy between the typography. What about alignment? Alignment's probably the one that we want to look at because right here, why would there be this indent, right? This white space right here. It would be much better alignment just to put this on the same exact column established by the company brand logo right here. So, I'm going to put alignment. It's going to move that over. So, now we can see the before and after. Show before. Show after. Much better. These subtle changes make a big difference and especially when you add them all up accumulatively across an entire design, across multiple pages, this is what's going to kill the quality of your UIs if you can't spot this stuff. I'll do one more. Here's pricing comparison. Okay. Um pricing comparison. Right here, I would say color. Having this outline in red does not make sense. First, from a UX perspective, that means danger. That doesn't really make sense. So, I'm going to put color. It's going to update this to purple, which already looks a lot better um in terms of color. Now, what else is wrong about this? I mean, these can be really tricky. I If you look at this and you kind of like just zoom out and scale, what kind of makes most sense to me since the brown the bronze package and this personal hosting across all three of the this this this subtitle and the title is centered and then this stuff is kind of just pushed over here to the left. It might be better if we take alignment and we center those all of the sudden. So, we could do the show the before with the red stroke and left align here and then show after and it fixes both of those issues. So, I won't do any more because I think there's like 15 or 20 or something. And just see I go through these and there is a point system, so you can kind of score yourself. They're not very easy. Sometimes they can be a little bit subjective. I'm thinking about making more of these and making more modern, but figure out just do this and see how well you can spot bad design because it is more difficult than what you think. So, make sure to subscribe up here. Let me know if you want me to update these. I'll create more tests. Uh I think it could be fun and maybe we can create a system where other people can create their own tests in kind of like a cool system. Anyhow, I will see you all very soon and goodbye.

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