Even the best content loses readers if it is hard to read. Tiny text, long lines, low contrast and dense paragraphs make visitors tired and more likely to leave. Good typography and readability help readers absorb information comfortably, especially on phones. This guide explains practical choices that make blog posts easier to read.
Why Readability Matters
- Readers stay longer and read more
- Content is accessible to more people
- Mobile users can read comfortably
- Better engagement supports your goals and SEO
Typography Settings That Work
| — | — |
|---|---|
| Body font size | 16–20px |
| Line height | 1.5–1.7 |
| Line length | About 60–80 characters |
| Heading sizes | Clearly larger than body text, consistent hierarchy |
| Contrast | Dark text on light background (or vice versa) with strong contrast |
Choosing Fonts
- Use one or two font families at most
- Choose clean, legible fonts for body text
- Use a distinctive but readable font for headings
- Avoid decorative fonts for long text
- Limit font weights to reduce loading time
System fonts load fastest; web fonts offer more character but should be optimised.
Contrast and Colour
Light grey text may look elegant but is hard to read. Aim for high contrast and test with a contrast checker. Use colour sparingly for links and highlights, and make links distinguishable without relying only on colour.
Paragraphs and Sentences
- Keep paragraphs to two to four sentences
- Use short sentences and active voice
- Explain one idea per paragraph
- Avoid unnecessary jargon
Headings and Structure
Use descriptive H2 and H3 headings so readers can scan. A table of contents helps on long posts. Bulleted and numbered lists break up dense text.
Visual Aids
Tables, images, callout boxes and highlighted key takeaways make content easier to understand. Keep visuals relevant and add alt text.
Mobile Readability
Test posts on phones. Check that text is large enough, tables scroll or stack properly, images fit the screen and buttons are easy to tap.
Plain Language Tips
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Readability Tools
Grammar and readability tools highlight long sentences, passive voice and complex words. Use them as guidance while keeping your natural voice.
Common Mistakes
- Small or light grey fonts
- Full-width text lines on large screens
- Long unbroken paragraphs
- Too many fonts and colours
- Centred alignment for long text
Real-World Example
A finance blog used 14px light grey text across wide lines. After switching to 18px dark text, limiting content width, increasing line height and breaking long paragraphs, average time on page increased and readers commented that the articles felt easier to follow.
Frequently Asked Questions
What is the best font size for blogs?
Usually 16px or larger for body text, often 18px on modern designs.
Serif or sans-serif?
Both can be readable; choose a clean font and test on screens.
Does readability affect SEO?
Indirectly, through engagement and user satisfaction.
Should text be justified?
Left-aligned text is usually easier to read online.
Conclusion
Readable typography lets your content shine. Choose comfortable font sizes, generous line spacing, controlled line length, strong contrast and short paragraphs. Small design changes can make your blog feel professional and keep readers engaged.
