Please revert the alt text regression to 150 characters from 1000

We just noticed that the alt text allowance has been reduced from 1,000 characters to 150. This is a major regression, and while I found the recently updated (yesterday, 11/18) support article that mentions the 150 character limit, that’s based on outdated guidance.

Notably, neither the WCAG SC 1.1.1 Non-text content guideline nor the ISO/IED 20071-11:2019 alt text guidance (also freely available as ITU T.701.11) specify a character limitation.

Please return to the 1,000 character limit (or, y’know, no limit at all) to better support Blind and low-vision users on social media, where 150 characters is often not enough to adequately describe an image.