代替テキスト生成 for X Chrome Extension
Generates alt text for X (Twitter) images automatically using OpenAI's vision model.
At a glance
Starts at
Free
No paid plan found on the Chrome Web Store, September 2026.
Free tier
Yes
Platforms
Chrome, API
Best for
X users writing accessible image descriptions fast
Not for
Anyone without their own OpenAI API key
3.9 out of 5
Scored by a Toolio reviewer after real useOur verdict
This Chrome extension adds a button to X's image description screen that calls OpenAI's vision model to write and insert alt text for you, so you skip typing image descriptions by hand. It needs your own OpenAI API key configured first, and it doesn't work without one; the developer states it collects no data and runs no analytics tracking. People who post images on X and want accessible alt text without extra typing get a small, privacy-conscious tool, though anyone unwilling to set up an API key is stuck at the first step.
✓What it does well
Automatic alt textGenerates image alt text for X posts with one button press.
Vision-model accuracyUses OpenAI's vision model to describe what's actually in the image.
No trackingCollects no user data and runs no analytics tracking.
✕Where it falls short
Needs your own API keyIt requires you to obtain and configure your own OpenAI API key first.
No ratings yetIt has no user ratings so far to judge it by.
X onlyIt only works on X (formerly Twitter), not other social platforms.
Key features
One-click generationAdds a button that generates alt text directly on the image editor screen.
OpenAI Vision integrationSends the uploaded image to OpenAI's vision model for description.
Automatic text insertionInserts the generated description straight into the alt text field.
Configurable API keyLets you set your OpenAI API key through the extension's options.