Blog image target summary
Suggested starting point: 120-220 KB for many blog images, with smaller targets for inline screenshots and repeated article graphics
How to size images for a blog post
- 1
Choose whether the asset is a featured image, inline screenshot, chart, or section illustration.
- 2
Resize it to the width the article template actually uses.
- 3
Compress the result toward a practical editorial target while keeping text and labels readable.
- 4
Preview the article page with several images loaded to judge the total performance impact.
Blog image recommendations
- Featured blog images often work well around 1200-1600 px wide with a final size near 120-220 KB.
- Inline screenshots, diagrams, and tutorial crops are often clearer when resized tightly to their reading width before compression.
- WebP or JPEG is usually the easiest choice for article photos and illustrations, while PNG can make sense for screenshots with sharp UI text.
- Compress more aggressively when a post contains many visuals, because article pages can become heavy through accumulation.
Blog pages are editorial pages. The goal is quick reading flow and clear supporting visuals, not maximum zoom detail or oversized campaign artwork.
Dimensions
- Featured images often sit in a wide banner slot, but they usually do not need full camera resolution.
- Inline visuals should match the article column width rather than the full browser width.
- Screenshot-based tutorials often benefit from tighter crops before export so text remains readable without wasting pixels on empty margins.
- Charts and infographics need enough width for labels to stay legible, but they still benefit from a realistic article-container size.
Key rules
- Compress when a blog image already fits the editorial layout but still ships too many KB.
- Resize when the image is wider than the article body or when screenshots include unnecessary empty space.
- Favor readability over extreme compression for charts, code screenshots, and step-by-step visuals.
- Audit the whole post, because ten okay-sized images can still create a slow article page.
Common mistakes
- Uploading the same oversized featured image to every blog template without checking the actual render width.
- Compressing screenshots so hard that interface text becomes fuzzy.
- Using enormous infographic exports even when the article container displays them much smaller.
- Treating blog images like product photos and preserving more detail than readers actually need.
Frequently asked questions
What is a good size for a blog featured image?
A featured image often works well around 1200 px to 1600 px wide with a final size near 120 KB to 220 KB, depending on detail and crop. The exact number varies with your theme and layout.
Should blog screenshots use PNG or JPEG?
PNG is often better for crisp UI screenshots and diagrams, while JPEG or WebP is usually better for photographic article visuals. Use the format that preserves readability without carrying unnecessary weight.
When should I compress blog images more aggressively?
Compress harder when a post contains many visuals or when the image plays a supporting role rather than carrying critical text detail. Heavy blog pages often slow down because lots of medium-size assets stack together.
How is blog sizing different from product-page or landing-page sizing?
Blog sizing prioritizes reading flow and total page weight across many supporting images. Product pages protect product detail, while landing pages often prioritize above-the-fold impact for campaign visuals.