Hey there. Happy Saturday! After reviewing over 400 startup websites, I have identified several common web design pitfalls that every founder should avoid.

Background Context

Last week, I posted a thread to ask founders to drop their website link so I can give them 1 tip to improve their hero section. The response was overwhelming, with over 442 comments pouring in.

While I didn’t count exactly how many websites I reviewed and critiqued, I distilled my observations into the top five pieces of pitfalls based on the most common issues I encountered.

1. Neglecting to tell a visual story

When a website opens with nothing more than a centered headline floating on a blank background, there’s no cue for the brain to understand context.

Humans process visuals 600x faster than text, and our minds rely heavily on visual cues to decide:

• What kind of problem this product solves

• Who it’s for

• Whether the company feels polished, modern, and trustworthy

When founders skip visual storytelling, two things happen:

1. The visitor has to “work” to understand you, which increases cognitive load.

2. The product feels less real, which lowers emotional connection and trust.

A strong visual story reduces mental effort and increases comprehension—not by making things “pretty,” but by helping people form meaning instantly.

2. Poor color selection and usage

Color is not an aesthetic choice; it’s a psychological signal.

Color influences:

• First impression (Is this modern? technical? premium?)

• Brand memory (Will they remember this product?)

• Perceived difficulty (Does this feel simple or overwhelming?)

• Emotional charge (Excitement, calmness, urgency, trust?)

When founders pick one color and apply it everywhere, the brand loses dimension. When they over-decorate with multiple bright colors, the design becomes noisy and confusing.

The result: the visitor subconsciously feels the product is unsophisticated, even if the technology is world-class.

Strategic color systems guide a user through hierarchy, clarity, and emotional flow. Poor color choices break that guidance.

3. Inconsistency in design elements

Inconsistency doesn’t just look messy—it creates micro-dissonance.

Every time a button shape changes or a font weight shifts unexpectedly, the brain catches the discrepancy. It’s subtle, but it triggers this reaction:

Trust is fragile. And inconsistency erodes it at scale.

When a site is visually aligned, users subconsciously conclude:

• This team pays attention to detail

• The product is likely high quality

• The company is reliable

Consistency equals credibility. Inconsistency equals uncertainty.

4. Inadequate or too much white space

White space is not empty space. It’s breathing room for the brain.

When elements are too close together, information merges and competes. Visitors feel overwhelmed and bounce—not because your product isn’t good, but because their brain feels tired.

When white space is poorly distributed or excessive, the opposite happens:

• The design looks unfinished

• Sections feel disconnected

• Users lose sense of structure

Optimal white space creates rhythm. It guides the user’s eye through your story with intention. It makes each message land with clarity and confidence.

White space affects reading speed, comprehension, and conversion more than most people realize.

5. Incorrect font spacing and sizing

Typography is the voice of your brand. Good typography builds trust; bad typography breaks it instantly.

Line spacing, letter spacing, and sizing all impact:

• Perceived professionalism

• Ease of reading

• Emotional tone

• Credibility

When spacing is off, visitors may not consciously name the issue—but they feel it. Poor typography creates friction, and friction kills conversions.

Optimized typography lowers cognitive load, improves comprehension, and increases the likelihood that a visitor will actually read your message—and act on it.

By avoiding these five common mistakes, founders can dramatically improve the design and functionality of their websites. Remember, a well-designed website not only looks good but also effectively communicates your message and engages your audience. Happy designing!

Why these mistakes matter far beyond aesthetics

These issues are not “design details.” They tie directly into:

• Human impression formation (people decide credibility within 50ms)

• Cognitive load (the harder your site is to interpret, the faster people leave)

• Emotional trust (clarity and coherence = confidence; noise = doubt)

• Business outcomes (conversion, demo requests, signups, investor confidence)

Good design reduces friction, increases clarity, and strengthens the story your startup is trying to tell. Most importantly, it aligns the visitor’s perception with the value you’ve actually built.

A well-designed website isn’t about looking better—it’s about being interpreted correctly.

Sharing a great website

After reviewing hundreds of website, I came across one website called Macaw. My reaction was… no reaction. Meaning: nothing triggered friction.

Here’s what the founder did well:

• Clear and consistent brand color

• Clean, breathable layout

• High readability through thoughtful font choices

• Strong contrast and accessibility

• Smooth visual narrative that guides the eye effortlessly

Everything works together to communicate:
“This is a modern, thoughtful, high-quality product.”

That is what good design achieves—not beauty for beauty’s sake, but clarity, trust, and momentum.

I hope the above is helpful for those who want to improve their website or learn to better design their website to convert customers better. :)

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