How to Pick a Font Size That Enhances Website Engagement

Vlad Niculescu
Vlad Niculescu

CEO @ Flowpoint

11 February 2024

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How to Pick a Font Size That Enhances Website Engagement

Every website designer knows that selecting the right font size can make or break the overall user experience. This is because readability directly affects website engagement, and choosing the optimal font size ensures that your visitors have a pleasant time interacting with your content. In this article, we will show you how to pick the perfect font size that enhances website engagement and user experience. We'll examine the key factors to consider and provide real-world examples to guide you in making the best choice for your website.

How Font Size Affects Website Engagement

Font size plays a crucial role in a website's readability. If your text is too small, users may struggle to read your content and eventually leave the site. On the other hand, if the text is too large, it can negatively impact the layout and aesthetics of your site.

According to a study by Smashing Magazine, a font size of 16 pixels is the optimal choice for body text, as it correlates with better user engagement. However, this is only a starting point. Several factors can influence the perfect font size for your website:

  1. Audience demographics
  2. Screen resolution and device type
  3. Font family and typeface
  4. Line spacing and line length
  5. Contrast and color

Let's break down each of these factors and see how they can help you make the right choice.

1. Audience Demographics

Consider the demographics of your target audience when choosing a font size. For example, older adults may prefer larger font sizes to ensure the text is easily legible. A survey conducted by the Nielsen Norman Group showed that users aged 65 and older needed a font size of 18 pixels at a minimum.

2. Screen Resolution and Device Type

Understanding the display capabilities of your users' devices is crucial in the decision-making process. High-resolution screens are capable of making smaller text appear more sharp and readable. However, scaling up the text size on smaller screens, like mobile devices, can still maintain a high level of readability and improve user engagement.

3. Font Family and Typeface

The chosen font family and the characteristics of the typeface will influence the optimal font size. Serif fonts, like Times New Roman, may require larger sizes to maintain legibility, while sans-serif fonts, like Arial, can be smaller and still maintain readability. Test different font sizes within your chosen typeface to determine what works best for your audience.

4. Line Spacing and Line Length

Proper line spacing (known as leading) and line length (also called measure) affect the overall readability of your content. Increasing line spacing can improve readability by reducing visual clutter, while shorter line lengths can help maintain focus and guide users through the content. Consider adjusting your font size to accommodate these factors.

5. Contrast and Color

Ensure that there's sufficient contrast between the text and background color on your website. Low contrast can make text difficult or even impossible to read, leading to poor user engagement. As a general rule, maintain a high contrast between the text and its background to guarantee legibility, regardless of the font size.

Real-World Examples

Here are two real-world examples where implementing the right font size led to an increase in website engagement:

  1. Crazy Egg: When Crazy Egg increased its font size from 14 to 16 pixels, they saw a 133% increase in users who read all the way to the end of the article.

  2. [Medium](https://blog.medium.com/the-optimal-text-layout-is-more-than-line-length-990990b proudkomprach-rib9): Medium found that a font size between 17 and 25 pixels, combined with optimal line spacing, is best for creating a pleasant reading experience that leads to higher engagement.

By considering these factors and examples, you can make an informed decision on the appropriate font size for your website. Be sure to test and optimize your selections with a tool like Flowpoint.ai, which uses AI-generated recommendations and behavior analytics to help you fine-tune your website and boost conversion rates. With the right font size in place, you can expect increased website engagement and a happier online audience.

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