Why Does AI Change My Fonts and Colors in Presentations?

You asked the AI to build a deck. You got something kinda okay – but the fonts were off, the colors felt random, and it just… wasn’t your brand.

Sound familiar?

You’re not alone. One of the most common frustrations with AI presentation tools is that they produce slides that look generic – or worse, visually wrong. Despite your prompt, they use default styles, swap out your fonts, or completely ignore your brand palette.

If you are one step back and looking for a system to help you build on brand presentations see this article where we break it down how you can achieve that.

Let’s break down why this happens, and what you can do to fix it.

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Why AI Slides Often Go Off-Brand

Most AI tools are built to generate content quickly – not necessarily with brand precision. They focus on:

• Speed
• Layout variety
• Visual readability

What they often ignore:

• Font fidelity
• Accurate brand colors
• Layout or spacing rules

If your brand system isn’t baked in, AI will fill the gaps with what it knows – which usually isn’t your style guide.

Fonts: What AI Tools Can and Can’t Access

1. Custom Fonts Need Manual Setup

If you use a licensed or custom font (like GT Walsheim or Avenir), AI won’t apply it unless you:

• Upload the font file
• Use a tool that supports embedding

Otherwise, the AI picks something like Arial – and your slides lose visual tone.

2. Hierarchy Often Breaks

AI might mix up font weights, sizing, or spacing. Even with the right font family, the result feels unpolished.

Colors: Defaults, Prompts, and Mistakes

Generic Palettes

Most AI tools fall back on “safe” defaults – blues, greys, greens – unless you give it clear direction.

No Brand Context

If your prompt doesn’t include your color palette or if the tool can’t lock it, expect inconsistency.

Inflexible Tools

Even with a brand kit uploaded, some tools allow overrides or random accent colors.

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How Decktopus Makes It Better

Most presentation AIs generate fast. Decktopus generates smart, with your brand rules built in.

Here's how it fixes the common issues:

Set and Lock Brand Fonts

Define your brand typography in the Brand Kit and enforce it across all slides. No more accidental Arial substitutions.

Set and Enforce Brand Colors

Add your color palette using hex codes. Decktopus applies them precisely, no surprise orange callouts or random gradients.

Brand Compliance Checks
Every generated slide goes through automated brand checks. If fonts, colors, or logo placement are off, the system auto-regenerates until it matches your standards. You can override it if you're satisfied.

Reusable Brand Kits

Upload once, use forever. Your colors, fonts, logos, and reference slides stay saved and apply automatically to every new deck

🟦 Set Up Your Brand Kit in Decktopus →

Common Failures in AI Decks

Font Swap

Your modern sans-serif font gets replaced by a default system font.

Color Drift

AI misinterprets your navy as teal or adds unapproved accent colors.

Visual Mismatch

Your tech-forward brand becomes soft and pastel – not your vibe.

These visual slips signal a lack of polish – and they erode brand trust.

How to Get AI to Stay On-Brand

1. Use Tools That Enforce Brand Rules

Decktopus checks every slide against your brand standards automatically. If something's off, it regenerates until it's right.

🛠️ Try Decktopus With Brand Controls →

2. Define Tone, Not Just Look

Set voice prompts alongside visual rules.
For example:

“Confident and clear, not robotic”
works better than
“Professional tone”

This helps AI match how your brand sounds, not just how it looks.

3. Reuse the Brand System

With Decktopus, your Brand Kit saves permanently. Every new presentation starts on-brand by default, no manual setup needed.

AI Isn’t Wrong – It’s Just Guessing

If your decks feel off-brand, the AI isn’t broken – it just doesn’t know your rules.

Show it. Set your system once. Let it follow.

With Decktopus, you get presentations that are fast, flexible – and always on-brand.

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📌 FAQ

Why does AI change my fonts?

Because your font wasn’t uploaded, or the tool doesn’t support custom fonts. Decktopus does.

Why are the AI colors wrong?

The AI is guessing or defaulting. Decktopus lets you lock your brand palette.

Can I lock my brand style?

Yes – Decktopus was built for that. Fonts, colors, logos, layouts – all under your control.

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