Alt Text Simulator

Select Scenario

Browser View

Visual

HTML Code

Source
<img src="cat-on-sofa.jpg" alt="">

Google Bot

SEO

Detected Keywords:

imagejpgfileunknown
Context Confidence15%

Screen Reader

Audio
VoiceOverSystem:Image. cat-on-sofa.jpg

Analysis

Without Alt Text, Google relies on the filename (which is often gibberish like IMG_294.jpg). Screen readers announce the filename, providing zero context to the user.

How Alt Text Travels

The invisible journey of a single line of code.

1. The Input

Developer adds the alt="" tag to the image code. This is the source of truth.

2. Processing

Browsers load the page. If the image breaks, they prepare the text. Search bots scan for context.

3. The Output

Screen readers convert text to speech. Search engines rank the image for keywords.

Making the web accessible benefits everyone.