Standard SEO Image Sizes for Websites in 2026

Standard SEO image sizes for websites

E-commerce website design that meets SEO standards is a key requirement and a top goal for a professional website. To reach this goal, your website needs to meet the criteria Google sets out. One of the requirements you need to get right is image size.

In detail, some SEO-standard image sizes to keep in mind are:

Standard image size for the website homepage

Homepage images matter a great deal because they are the first thing customers see when they visit your website.

Usually, the standard size for homepage slider images you should follow is 1260×540 pixels.

You also need to size images properly for the other elements on your homepage. Pay special attention to the design and size of the logo. Specifically, the optimal size for a website logo is usually 250×100 pixels (width x height). However, depending on the type of website, you will need to adjust the logo size accordingly. For example, the 2 most common website logo sizes are:

• Horizontal logo: 250×150 pixels; 350×75 pixels, 400×100 pixels
• Vertical (square) logo: 160×160 pixels

Favicon size is another element to watch. A favicon is a small logo shown next to the website address, usually designed from the brand's main logo. This small logo (favicon) is usually at least 16×16 pixels, or 48×48 pixels. The purpose of this minimal size is to speed up image loading on the website and help Google crawl data faster.

Standard image sizes in articles

Besides homepage image sizes, you also need to watch image sizes in articles. MONA has put together the standard website image sizes you should refer to and follow below:

• Illustration image size: 300×188 pixel
• Product image size on the website: 800×500 pixel
• Product description image size: 300×400 pixels for illustrations and 600×800 pixels for detail images.

Standard size for website thumbnails

What is a thumbnail?

Thumbnail (a reduced-size image) is a term designers and photographers use for a small version of a larger image, so readers or viewers can browse many images at once.

Why optimise thumbnails on your website?

By letting users preview images without downloading them, thumbnails make your website feel convenient and professional to users.

On top of that, for a website with many images, lightweight thumbnails improve page load speed and give a better user experience.

What is the standard thumbnail size for a website?

The standard thumbnail size differs from platform to platform:

1. Website thumbnail size

The standard thumbnail size for a website when sharing an article is 1200×630 pixel.

2. YouTube thumbnail size

• Displayed YouTube thumbnail size: 1280×720 pixels.
• YouTube banner size: 2560×1440 pixels.
• YouTube profile picture size: 800×800 pixels.

For suggested clips shown to the right of the video, the standard thumbnail size is 168×94 pixels. At this size, the YouTube thumbnail keeps the best quality after upload.

Tips for an attractive thumbnail

To get an attractive thumbnail, keep the following criteria in mind:

• Choose suitable colours: Depending on the product or the message you want to deliver, choose a sensible main colour and avoid colours that are unpleasant to look at.
• Choose images that convey the message accurately: If your thumbnail uses a person as the main subject, pick shots with strong emotional expression and use close-ups. This helps attract more viewers.
• Keep text in the thumbnail visually clean: Text needs to stand out and be sharp, so readers grasp your message at a single glance.
• Consistent thumbnail design: A consistent design across thumbnails helps customers find products easily and makes your website look more unified and professional.

Whether you are optimising thumbnails, banners or featured images, the right size is the first “key”. The banner design service of MONA Media turns every pixel into a convincing experience, delivering the right message, reaching the right audience and meeting your communication goals.

With hands-on experience across banner design projects and advertising poster design in many industries, MONA offers you complete solutions:

• Strategic analysis, no cookie-cutter work: Each banner is designed around the specific campaign goal, the industry and the brand DNA, so the visuals look good and the message is accurate and distinctive.
• Multi-format, optimised for every platform: Banners are optimised in size and format for every placement (website, Facebook, YouTube, display ads), avoiding broken images or cut-off text and giving viewers a smooth experience.
• Content that is “on point and on target”: Headlines, calls to action and colours are designed to raise click-through rate (CTR) from the moment the banner appears.
• Deep experience: MONA Media has worked with businesses across fashion, F&B, real estate and technology, and understands the conversion challenges of each field.
• A clear, fast process: From receiving the brief, developing the concept, designing and sending demos to quick revisions until completion, every step is transparent and efficient.

CONTACT US MONA Media qua HOTLINE 1900 636 648 to get professional, correctly sized, attractive banners and images with the strongest promotional impact!

Are Facebook and website image sizes the same?

Many companies and businesses use both a website and social media pages for business goals and brand building. So many people ask whether images designed for Facebook can be used on a website, and vice versa.

The answer is that you can cross-post images across channels, but it is better not to. Facebook's standard image ratios and sizes are not the same as a website's. As a result, the images will not display optimally on each platform or deliver the results you want.

When uploading images to Facebook, you should resize them to the following specifications:

• Profile picture size: square 300 x 300 pixels or 2048 x 2048 pixels
• Fanpage cover photo size: desktop 820 x 312 pixels, mobile 820 x 462 pixels
• Personal profile cover photo size: 640 x 360 pixels.
• Post image size: 900 x 900 pixels, 1200 × 900 pixels, 900 × 1200 pixels

Image resizing tools

In most cases, your images will not have the standard ratio and size. When that happens, the tools in the list below will help you adjust and resize images before uploading them to your website.

If you do not use ready-made images on your website often, you only need a simple built-in tool on your computer or a website that offers image editing tools online. If it is regular work, the best option is to install professional software and learn how to use it.

Design software

• Adobe Photoshop: Leading software for designing and editing images, widely used in many related fields. Using Photoshop to crop and resize images is quite simple, and there are plenty of online video tutorials.
• Krita: Free image editing software with features and tools quite similar to Photoshop.
• Paint.NET: Although the software has a dated interface, it is not complicated to use and its image editing tools are fairly easy.

Built-in computer software

Paint – a tool pre-installed on computers running Windows

• Step 1: Open Paint and open the image file in it
• Step 2: Click Resize on the toolbar
• Step 3: Adjust the image – Paint has two ways to resize: by pixels and by percentage of the original. Just change the numbers and click OK to finish.
• Step 4: Save the edited image and use the new file to upload to your website.

Online image editing tools

• Pixlr: offers a cloud-based set of online image editing and design tools; Pixlr also provides screen recording and image file sharing.
• Fotor: a completely free online image tool; besides resizing, you can use Fotor to adjust brightness, contrast, white balance and saturation, blur, rotate and flip images,…
• Canva: one of the most popular image editing tools, with Vietnamese language support. Canva has a library of templates already in standard image sizes; you just swap the images and text to get the finished result you want.

We hope that through the content above, you now have a good grasp of standard website image sizes, as well as some effective tools for resizing images. Also, if you are looking for a service that handles everything about image standards shoot a corporate profile or all the images posted to your website with engaging, SEO-standard content that is always kept up to date, then the complete website management service of MONA is a strong choice for you. Let our team take your website to the top and grow it sustainably!