Can alt text long?

Essentially, alt text should be as long as it needs to be in order to effectively describe the content, but should be succinct. For complex images such as charts, graphs, and diagrams that require more lengthy descriptions, there are other options.

How long should alt image tags be?

about 125 characters
While ALT tags need to be descriptive, they also need to be brief. They should not be full sentences or paragraphs. With a limit of about 125 characters, an ALT tag should provide enough detail for users and search engines to relate the image to the context of the page.

What is the preferred length of alt text?

Note: A recommended ALT text length is about 125 characters.

When should you not use alt text?

3. Including alt text for decorative images or items. Decorative items such as dividers or design items that don’t provide additional context or content don’t need alt text. They don’t add to the information a user needs and they make little sense, or are unnecessary, when read with a screen reader.

Is there a limit to the length of an alt attribute?

The HTML specification does not define a maximum length for “alt” attributes. Current versions of the leading screen reader programs have no limits on the amount of alternate text they will read.

When do I need the alt attribute in HTML?

The required alt attribute specifies an alternate text for an image, if the image cannot be displayed.

How many characters can you put in an alt tag in HTML?

The alt text. The alt attribute will accept any text string, but there are certain best practices that will help. No special characters. This includes UTF-8 characters such as unencoded curly quotes, as well as HTML Character Entities. No HTML. No more than 125 characters.

Is there a limit to the length of HTML attributes?

DOMStringMap is an interface with a getter, setter, greator and deleter. The setter has two parameters of type DOMString, name and value. The value is of type DOMString that is is mapped directly to a JavaScript String. From http://bytes.com/topic/javascript/answers/92088-max-allowed-length-javascript-string:

https://www.youtube.com/watch?v=xcWwcTRS79s