What's the most important element of blog design?
Typography. The reading experience lives or dies on font size, line height, and line length. Most blogs use type that's too small, lines that are too long, and paragraph blocks that are too dense. Fix the typography and you immediately improve every reader's experience.
Should blog posts have a sidebar?
For most content sites in 2027, no. Sidebars compete with the article for attention, create visual noise that reduces focus, and perform poorly on mobile (they collapse below the content where no one sees them). A content-first layout with inline CTAs and a table of contents is more effective for both engagement and conversion.
How long should a blog post layout be on screen?
The content column should be 60–75 characters per line (about 600–680px). Narrower is harder to read quickly; wider causes the eye to lose its place when scanning back to the start of the next line. This is one of the most commonly violated typography rules on business blogs.
The average blog post gets read for 37 seconds.
Not because the content isn't valuable — but because the design makes reading feel like work. Small text. Long paragraphs. No visual hierarchy. No reason to scroll down.
Good blog design does the opposite. It makes reading feel effortless. It guides the eye through the content. It signals at every level: this is worth your time.
The Reading Experience: Typography First
Typography is the foundation of blog design. Everything else is secondary.
Font size: Body text should be 17–20px. Anything smaller strains eyes on desktop and is unusable on mobile without zooming. Most blog templates default to 14–16px. Increase it.
Line height: 1.6–1.75× the font size. Cramped line height makes reading feel like work. Generous line height makes it feel easy.
Line length: 60–75 characters. This is roughly 500–650px for most body fonts at 18px. Lines longer than 80 characters cause the eye to lose its place when scanning back to the start of the next line.
Paragraph length: 3–5 lines maximum. Long paragraphs are the single biggest cause of reader abandonment on blogs. Short paragraphs with white space between them signal scannable, readable content.
✦The 18px Rule
Set your body text to 18px minimum. Then set your line height to 1.7. Then set your content column to 680px maximum. These three changes alone improve the reading experience of most business blogs more than any other design decision.
Blog Post Layout Structure
A well-designed blog post has predictable structure that guides readers through the content.
The Essential Elements
1. Clear headline (H1) One headline. No subtitle competing with it. Your headline is the most-read text on the page — give it space and visual weight.
2. Post metadata Author, date, read time estimate, category. Compact and below the headline. Read time estimates increase click-through and reduce bounce — readers who know something will take 7 minutes are more likely to commit than those who don't know what they're getting into.
3. Introduction Short (2–4 short paragraphs). The introduction needs to confirm: this article answers the question you came with. Don't bury the answer — signal it immediately.
4. Table of contents (for long posts) For posts over 1,500 words, a table of contents improves navigation significantly. It also increases the chance a reader jumps to the section most relevant to them — which increases engagement time.
5. Headings with clear hierarchy H2 for major sections. H3 for subsections within those. Never skip a level. Headings should describe the content in the section — not be clever or vague.
6. Callout boxes and pull quotes Visual breaks in text increase reading engagement. Callout boxes for important tips or warnings. Pull quotes for key statistics or statements.
7. Inline CTAs At least one conversion element within the content — not just at the end. "Read more about X" or a contextually relevant CTA placed in the middle of a long post performs better than a single CTA at the bottom that many readers never reach.
Blog Index Page Design
The blog index page is often neglected — treated as a simple list of posts when it should be designed as a discovery engine.
What the blog index needs:
- Category filtering — readers looking for a specific topic should be able to filter immediately
- Post cards with clear hierarchy — headline, excerpt (1–2 sentences), date, category, read time
- Visual differentiation — a way to distinguish featured or popular posts from standard posts
- Pagination vs. infinite scroll — pagination is better for SEO (stable URLs for each page); infinite scroll is better for discovery. Pagination with "load more" is a reasonable compromise.
| Feature | Weak Blog Index | Strong Blog Index |
|---|---|---|
| Post cards | Title and date only | Title, excerpt, read time, category |
| Category navigation | Not available | Filter by topic, prominent above posts |
| Featured posts | Chronological list only | Featured/popular section at top |
| Search | No search function | Search available within blog section |
| Visual design | Text list, no images | Featured image, consistent card design |
| Pagination | Infinite or none | Numbered pagination with stable URLs |
Sidebar vs. Sidebar-Less Design
The sidebar debate: does it help or hurt?
The case against sidebars (strong):
- Sidebars fragment attention from the main content
- Most sidebar widgets (latest posts, tag clouds, ads) have near-zero click rates
- On mobile, sidebars collapse below content — invisible to most readers
- Content-first layouts show significantly higher time-on-page metrics in A/B tests
When a sidebar might help:
- High-volume content sites where readers genuinely want to jump between content types
- Sites with strong in-house author brands where the author bio adds credibility
- Sites with genuinely relevant course or product promotions that benefit from persistent visibility
For most business blogs in 2027, a sidebar-less content-first layout performs better.
Mobile Blog Design
Mobile reading is the default for most blog content discovered via social media or search.
Mobile blog design requirements:
- Body text at least 17px (many mobile users have 18–20px as their preferred reading size)
- Tap targets (links, buttons) at least 44×44px
- No horizontal scrolling
- Images that scale properly within the column
- Fast load time — large images in blog posts are the most common performance issue
ℹMobile Reading Is Scanning
Mobile readers scan more than desktop readers. They make faster decisions about whether to continue reading. Short paragraphs, clear headings, and visual breaks (callout boxes, images, bullet lists) are even more important on mobile than desktop.
Images in Blog Posts
Images serve several purposes in blog posts — breaking up text, illustrating concepts, and providing visual interest for social sharing.
What works:
- Custom diagrams and illustrations specific to the content
- Screenshots and examples that explain a concept visually
- Before/after or comparison visuals
- Consistent image style across all posts
What doesn't:
- Generic stock photography of people at laptops or people shaking hands
- Images that add visual weight without adding informational value
- Large uncompressed images that slow page load
A blog with no images can work well if the typography and layout are strong. A blog with bad stock photography often looks worse than one with no images.
Related Posts and Internal Linking
Internal links are both an SEO benefit and a reader benefit.
Readers who find one article useful and discover related content on your site stay longer and visit more pages. This increases engagement metrics and the depth of the relationship before they convert.
Related posts: Show 2–3 related posts at the end of every article. Algorithm-based related posts (same category, similar tags) work better than manually curated ones at scale.
Inline links: Link to related posts within the text when genuinely relevant. "Read brand typography guide for the typeface framework" is more useful than a generic "related posts" section.
Read content strategy for websites for the full framework on building internal linking that supports both readers and search rankings.
Blog that needs a design that keeps readers engaged?
Evoke Studio designs content-first blog experiences on Next.js — typography systems, post layouts, index pages, and conversion flows built for both readers and search.
17–20px for body text, with a line height of 1.6–1.75× the font size. Most blog templates default to 14–16px, which is too small for comfortable extended reading. 18px with 1.7 line height is a reliable baseline that works across most screen sizes and reading contexts.
Long enough to fully answer the question the reader came with — no longer. For informational content competing in search, comprehensive posts (1,500–3,000 words) tend to rank better than thin ones. But length should be a consequence of thoroughness, not a target. A 800-word post that completely answers the question is more valuable than a 2,500-word post padded to hit a length target.
Yes, for posts longer than approximately 1,500 words. A table of contents improves navigation, signals the scope and depth of the content to readers deciding whether to invest time, and increases the chance that a reader finds the section most relevant to them — which improves engagement. It also creates jump-link fragments that can appear in search results as FAQ entries.
The highest-impact changes: increase font size to 18px minimum, reduce paragraph length to 3–5 lines maximum, add a table of contents on long posts, add callout boxes for important information, and add 2–3 relevant inline links to related posts. These typography and structure changes typically improve average time-on-page more than any content change.
The content column for a blog post should be 600–700px maximum. At 18px font size, this produces the ideal 60–75 characters per line that makes reading feel natural. Wider columns with longer line lengths cause eye strain on extended reading. The most readable long-form content online (Medium, Substack, well-designed news sites) all use relatively narrow content columns with generous white space on either side.