Image sizing affects page speed, search visibility, social sharing, and how polished your content looks. When an image is too small, it can look soft or blurry on modern screens. When it is too large, it can slow down your site and waste storage. The goal is not to upload the biggest file possible. The goal is to upload an image that is large enough to look sharp, small enough to load fast, and cropped for the way each platform displays it.
For most websites and social platforms, 1600 pixels wide is a strong default starting point. This means that the image is 1600 pixels across the top. Then calculate the height that corresponds to the ideal aspect ratio for your desired posting platform (see tables below).
A photo that’s 1600 pixels across the top is large enough for crisp display on modern screens. It also gives you room to crop images into common social ratios without starting with a tiny source file. If you keep a 1600-pixel-wide master image for each crop, you can cover most real-world use cases without maintaining a messy library of random image dimensions.
Why image size advice changed over time
Older image guidance often pushed people toward much smaller files. A common recommendation was to keep website and blog images around 600 to 1200 pixels wide, and to compress them hard. That advice made sense at the time. Screens were smaller. Mobile bandwidth was slower. Many websites used JPEG files with heavier compression tradeoffs. Storage and performance budgets were tighter, and content management systems were less efficient at generating responsive image sizes automatically.
That older advice is not always wrong, but it is incomplete now. Modern websites need images that hold up on large desktop monitors, high-density mobile displays, and large social previews. Search features such as Google Discover also reward larger, well-prepared images. At the same time, modern file formats have improved. WebP and AVIF can deliver better quality at smaller file sizes than old JPEG workflows in many cases. That means you can often use larger pixel dimensions without causing the same performance problems you would have seen years ago.
The result is a new balance. Keep dimensions large enough to stay sharp. Keep file weight low through smart export settings and modern formats. In practice, that often means a 1600-pixel-wide image is a practical default for websites and social sharing, while some specific uses call for larger or differently cropped versions.
The simple default
If you want one rule that covers most situations, use this: prepare your main images at 1600 pixels wide, then crop to the right aspect ratio for the destination. This gives you a simple production system. It also reduces decision fatigue. Instead of debating dozens of custom sizes, you can start from one baseline and make smart crop choices.
For example, a blog hero image can be 1600 by 900 pixels in a 16:9 ratio. A square social image can be 1600 by 1600 pixels. A Pinterest image can be 1600 by 2400 pixels in a 2:3 ratio. A vertical Story image can be 1600 by 2844 pixels in a 9:16 ratio. These sizes are large enough for quality and still manageable when exported properly as a WebP file.
Aspect ratio matters more than many people think
Many image problems come from using the wrong shape, not the wrong width. Platforms crop images into their preferred display areas. If your image does not match the expected ratio, key parts can get cut off. Text overlays can disappear. Faces can get cropped. Product shots can lose their focal point.
That is why it helps to think in terms of both ratio and pixel dimensions. The ratio controls the shape. The pixel dimensions control the resolution. Start with the right shape for the platform, then export that crop at a useful size.
These are the most important ratios to know:
1:1 is square. It works well for many feed posts.
4:5 is slightly vertical. It takes up more feed space on mobile and often performs well on Instagram, Facebook, and LinkedIn.
16:9 is horizontal. It is common for website hero images, YouTube thumbnails, and Google Discover.
1.91:1 is a wide horizontal format used for many link preview cards.
2:3 is a tall vertical format that works well on Pinterest.
9:16 is full vertical. It is used for Stories, Reels, Shorts, and TikTok-style content.
Quick reference table for aspect ratios
| Platform | Best for feed posts | Best for Stories/Reels | Best for link previews |
|---|---|---|---|
| 1:1 or 4:5 | 9:16 | 1.91:1 | |
| 1:1 or 4:5 | 9:16 | Not applicable | |
| X (Twitter) | 1:1 or 16:9 | Not applicable | 1.91:1 |
| 1:1 or 4:5 | Not applicable | 1.91:1 | |
| TikTok | 9:16 | 9:16 | Not applicable |
| YouTube | 16:9 (video) | 9:16 (Shorts) | 16:9 (thumbnail) |
| Google Discover | 16:9 (horizontal) | Not applicable | 16:9 (horizontal) |
| 2:3 or 1:1 (carousel) | 9:16 | Not applicable |
Pixel dimensions using a 1600-pixel-wide base
Once you choose the right ratio, the next question is what size to export. The table below uses a 1600-pixel-wide base. This is a practical system because it is easy to remember and flexible across channels. In many workflows, this can become your default export standard.
| Platform | Feed posts (ratio) | Feed posts (pixels) | Stories/Reels (ratio) | Stories/Reels (pixels) | Link previews (ratio) | Link previews (pixels) |
|---|---|---|---|---|---|---|
| 1:1 or 4:5 | 1600 x 1600 | 9:16 | 1600 x 2844 | 1.91:1 | 1600 x 838 | |
| 1:1 or 4:5 | 1600 x 1600 | 9:16 | 1600 x 2844 | Not applicable | n/a | |
| X (Twitter) | 1:1 or 16:9 | 1600 x 1600 | Not applicable | n/a | 1.91:1 | 1600 x 838 |
| 1:1 or 4:5 | 1600 x 1600 | Not applicable | n/a | 1.91:1 | 1600 x 838 | |
| TikTok | 9:16 | 1600 x 2844 | 9:16 | 1600 x 2844 | Not applicable | n/a |
| YouTube | 16:9 (video) | 1600 x 900 | 9:16 (Shorts) | 1600 x 2844 | 16:9 (thumbnail) | 1600 x 900 |
| Google Discover | 16:9 (horizontal) | 1600 x 900 | Not applicable | n/a | 16:9 (horizontal) | 1600 x 900 |
| 2:3 or 1:1 (carousel) | 1600 x 2400 | 9:16 | 1600 x 2844 | Not applicable | n/a |
How to choose the right size for website images
Website images are not all doing the same job. A hero banner, an inline recipe photo, a team headshot, and a logo each need different treatment. That said, a simple system works well for most content sites and business websites.
For hero images and featured images, a horizontal crop is often the safest choice. A 16:9 image at 1600 x 900 is a clean default. It looks good in blog layouts, social previews, and many SEO plugin image slots. It also meets the general direction of using wide images for search and discovery surfaces.
For standard content images inside articles, 1600 pixels wide is often more than enough. The browser will display a smaller responsive version on most devices, and the larger source helps preserve sharpness. If your content area is narrow and your workflow is disciplined, you can sometimes export smaller, but 1600 pixels wide keeps things simple and future-proof for reuse.
For portrait images inside blog posts, keep the width at 1600 pixels and let the height follow the crop. A 4:5 image would be 1600 x 2000. A 2:3 image would be 1600 x 2400. Portrait images can work well for tutorials, fashion, gardening, before-and-after content, or any subject where vertical framing helps the photo feel more immersive on mobile.
For logos and simple graphics, dimensions depend on the display size, but the file format matters more. SVG is often best for logos when supported in your workflow. If you need a raster format, export only as large as needed and keep the edges crisp.
Google Discover and large preview images
Google Discover favors strong visuals. Horizontal images that are at least 1200 pixels wide can qualify for larger preview treatment. That makes a wide featured image one of the smartest defaults for content publishers. A practical recommendation is to use a 16:9 image, and your background notes recommend 1422 x 800 as a strong minimum target. A 1600 x 900 version fits the same shape, meets expected minimums, and provides extra resolution while staying easy to manage.
In practice, this means many publishers can standardize on a 16:9 hero image for blog posts and featured images. That same image can then support your article itself, your schema image, and your social preview setup with less extra work.
Platform-by-platform guidance
Facebook image sizes
Facebook feed images work well in square and slightly vertical formats. A 1:1 image at 1600 x 1600 is a dependable default. A 4:5 crop can take up more space in the feed, which can help visibility on mobile. For Stories, use 9:16 at 1600 x 2844. For link previews, a wide crop around 1.91:1 at 1600 x 838 fits typical card layouts well.
If you publish blog posts and want them to look good when shared on Facebook, pay attention to your Open Graph image settings. The platform often pulls preview images from those tags rather than from the images inside the post body.
Instagram image sizes
Instagram rewards clean crops and strong composition. For feed posts, square images still work well, but 4:5 vertical images often win more screen space. If you maintain a 1600-pixel-wide workflow, that means a square image at 1600 x 1600 or a 4:5 image at 1600 x 2000. For Stories and Reels, use 9:16 at 1600 x 2844.
When cropping for Instagram, keep important subjects toward the center. The app interface can overlap the edges of images and videos, especially in Stories and Reels.
X image sizes
X (Twitter) tends to handle square and horizontal images best. A 1:1 image at 1600 x 1600 is a simple choice for regular image posts. A 16:9 image at 1600 x 900 works well when you want a wider visual. Link previews often display around 1.91:1, so 1600 x 838 is a practical reference point for shared content cards.
The main issue on X is awkward cropping in previews. Wide images can look clean, but only if the subject is framed thoughtfully. Avoid placing important text at the far edges.
LinkedIn image sizes
LinkedIn behaves similarly to Facebook for many feed uses. A 1:1 image at 1600 x 1600 is safe, and a 4:5 vertical image can help you occupy more feed space. For link previews, use a wide crop near 1.91:1, such as 1600 x 838.
Because LinkedIn often supports professional, educational, and B2B content, clean charts, diagrams, screenshots, and branded graphics can work well there, but keep the composition simple. Small text inside images can fail on mobile.
TikTok image sizes
TikTok is a vertical platform. Use 9:16 at 1600 x 2844 for posts and vertical content assets. Even if the platform compresses your uploads, starting with the right ratio helps your content display properly. The same applies to image slideshows and cover images used within a vertical workflow.
If you repurpose website or blog visuals for TikTok, do not just stretch a horizontal image. Re-crop it intentionally for vertical framing. Vertical platforms need a different composition strategy.
YouTube image sizes
YouTube uses 16:9 for standard video and thumbnail workflows, so 1600 x 900 is a clean working size in a 1600-pixel system. For Shorts, use 9:16 at 1600 x 2844. If you are creating thumbnails, remember that they display small in many contexts. Favor bold composition and large, readable focal areas over fine detail.
You may also keep higher-resolution source files for YouTube production, but for a general website and social media sizing system, 16:9 and 9:16 are the key shapes to manage.
Google Discover image sizes
Google Discover works best with strong horizontal images. Use 16:9, and keep the image at least 1200 pixels wide. In a 1600-pixel system, 1600 x 900 is a strong default. This gives your post a large, clean image option that can stand out in the feed.
If Discover traffic matters to your site, your featured image workflow deserves attention. This is one place where image preparation directly supports visibility.
Pinterest image sizes
Pinterest favors vertical content. A 2:3 image at 1600 x 2400 is a strong standard for regular pins. Square images can work for some carousel uses, but the tall vertical format is the safer choice when you want a pin to stand out in a mobile scroll. For vertical story-style content, 9:16 at 1600 x 2844 is also useful in relevant placements.
Pinterest is one of the clearest cases where shape matters more than width alone. A well-composed vertical image will usually outperform a generic horizontal crop repurposed from a blog post.
How file type fits into the sizing discussion
This article focuses on sizes and ratios, but file format still matters because the same dimensions can produce wildly different file weights depending on export type.
WebP is a practical default for most website images. It often gives you a good balance between quality and page speed. AVIF can produce even smaller files at similar visual quality in many cases, which makes it appealing for performance-focused sites. The downside is that workflow support can still be less convenient in some tools, and some teams prefer WebP as the easiest standard across a content team. And some sharing workflows do not support AVIF yet.
JPEG still has a place. It remains widely supported and is still common for photos, especially in systems that do not yet handle newer formats well. PNG is useful when you need transparency or when a graphic has hard edges that do not export well as a JPEG. For many websites now, the practical order is this: use WebP first, use AVIF when your stack supports it cleanly, keep JPEG as a fallback for photos, and use PNG where transparency or graphic quality calls for it.
The key point is this: larger pixel dimensions are more realistic now because file formats improved. That is one reason a 1600-pixel baseline makes sense today in a way that felt excessive in older JPEG-only workflows.
How to crop before you upload
It is better to crop intentionally before upload than to let a platform decide for you. Start with the destination in mind. Ask where the image will live first. Then choose the crop that matches that use.
If the image is for a blog post hero and Google Discover matters, make it 16:9. If the image is for Instagram, decide whether you want square or 4:5. If the image is for Pinterest, make a dedicated 2:3 crop. If the image is for Stories, Reels, Shorts, or TikTok, create a full 9:16 version.
This approach also helps with design. You can reposition the crop to protect the subject, preserve negative space, and avoid awkward cuts. A one-size-fits-all crop rarely works well across every platform.
How to choose strong visuals
The right dimensions help, but the image itself still matters. Visuals that feel relevant, sharp, and honest tend to perform better than generic stock art. In many cases, authentic photos build more trust and fit the topic more naturally.
Choose images that clearly show the topic, feel bright and crisp, stay recognizable on mobile, and match the intent behind the keyword or post. If you are trying to rank for a search topic, look at image search results for that topic. That can help you see the visual patterns the algorithm already associates with the subject.
Alt text, captions, and image metadata
Alt text supports both accessibility and search understanding. Write alt text for meaningful images, and describe what the image shows in plain language. A specific description usually works better than a vague label. For example, “three-layer chocolate cake topped with strawberries” says more than “cake.”
Captions are optional. Use them when they add useful context, explanation, or credit. Skip them when the image is already obvious from the nearby text and the caption would only repeat what readers can already see.
Also name image files clearly. Descriptive filenames help keep your media library organized, and they provide another small signal about what the image contains.
Managing image files on your website
Image quality is only part of the job. A clean media workflow helps page speed and long-term site maintenance. Remove old assets you no longer use. Reuse optimized versions of recurring files such as logos, background graphics, and shared brand visuals. Serve those through your CDN when possible.
Make sure search engines can crawl your image URLs and that your images are included in your XML sitemap. If search engines cannot access your images, they cannot show them in image search, rich results, or Discover.
A practical workflow for publishers and small business websites
If you want a simple image system that covers most needs, keep these master exports on hand:
- 1600 x 900 for website heroes, blog featured images, Google Discover, and many wide previews.
- 1600 x 1600 for square social posts.
- 1600 x 2000 for 4:5 feed posts on Instagram, Facebook, and LinkedIn.
- 1600 x 2400 for Pinterest pins in 2:3.
- 1600 x 2844 for Stories, Reels, Shorts, and TikTok-style vertical content.
- 1600 x 838 for wide link preview cards near 1.91:1.
This small set of sizes covers a large share of common web publishing use cases. It is easier to train a team around this system, and easier to build templates around it in Canva, Photoshop, Figma, or your CMS workflow.
Final image checklist before publishing
Before you publish, confirm that your hero image is horizontal, at least 1200 pixels wide, and clearly reflects the topic. Check that your social image uses the ratio that matches the target platform. Review the filename, alt text, and crop. Make sure the image looks sharp on mobile. Then confirm your plugin or theme settings allow large image previews where relevant.
You only get one first impression in a feed, search result, or article preview. A well-sized image helps that impression work in your favor.













