Image alt text and optimization in SEO Fundamentals - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is the purpose of alt text in images on a website?

Alt text describes the content of an image for people who cannot see it, such as users with visual impairments or when the image fails to load. It also helps search engines understand the image.

beginner

Why is image optimization important for websites?

Image optimization reduces file size to make pages load faster, improving user experience and search engine rankings. It also saves bandwidth and helps mobile users with slower connections.

intermediate

Name two common methods to optimize images for the web.

1. Compressing images to reduce file size without losing much quality.<br>2. Using the correct image format like JPEG for photos and PNG for graphics with transparency.

intermediate

How does descriptive alt text improve SEO?

Search engines use alt text to understand what an image shows. Descriptive alt text can help the page rank better for related keywords and improve visibility in image search results.

intermediate

What should you avoid when writing alt text?

Avoid using phrases like 'image of' or 'picture of' because screen readers already announce it as an image. Also, do not stuff keywords or write long descriptions that are not helpful.

What does alt text primarily help with?

A Describing images for screen readers

B Changing image colors

C Increasing image file size

D Adding animations to images

Alt text provides a description of images for screen readers and when images cannot be displayed.

Which image format is best for photos to optimize size and quality?

A PNG

B GIF

C JPEG

D SVG

JPEG is best for photos because it compresses images well while keeping quality.

Why should images be optimized on websites?

A To slow down page loading

B To improve page loading speed and user experience

C To increase bandwidth usage

D To make images blurry

Optimized images load faster, improving user experience and SEO.

What is a bad practice when writing alt text?

A Including important keywords naturally

B Using clear, descriptive words

C Keeping it short and relevant

D Writing 'image of' before the description

Writing 'image of' is redundant because screen readers already identify images.

Which of these helps search engines understand images better?

A Alt text

B Image size

C Image resolution

D Image color

Alt text provides context about the image content to search engines.

Explain why alt text is important for both accessibility and SEO.

Think about users who cannot see images and how search engines read websites.

Describe two ways to optimize images for faster website loading.

Focus on reducing file size and choosing the right format.