AltoGraph – AI Alt Text Generator & SEO Meta Descriptions

AltoGraph is an AI alt text generator that writes the metadata you never have time for. When you upload an image, it generates accurate, accessible alt text by looking at the picture. When you save a post, it can write an SEO meta description and add JSON-LD structured data. Turn it on once and it keeps your media and content described as your site grows.

Unlike most tools, you don’t need your own AI API key. The AI runs on the AltoGraph service, so there’s nothing to configure. The free plan covers 25 items per month; AltoGraph Pro removes the monthly limit (subject to fair use).

What it does

• Generates descriptive alt text for images from the image itself (better accessibility and image SEO).
• Writes concise, on-topic meta descriptions for posts and pages.
• Adds Article JSON-LD structured data for richer search results.
• Backfills alt text for images that are currently missing it.
• Never overwrites alt text you’ve written yourself.

Privacy-friendly by design

Automation is off until you switch it on, and AltoGraph only ever sends what it needs to do the job (see the External Services section below). A non-identifying site ID (a hash of your site URL) is used for usage counting; no personal data is required.

External services

This plugin connects to the AltoGraph API to generate alt text and metadata. It is required for the plugin’s core features.

• What is sent and when:
  • Alt text: when you upload an image (with automation on), run the backfill action, the plugin sends the image URL and filename to the AltoGraph API.
  • Meta descriptions: when you save a post or page (with automation on), the plugin sends the post title and post content.
  • Usage counting: a non-identifying site ID (a hash of your site URL) accompanies each request.
• Where it goes: the AltoGraph API (default https://api.thereallyusefulappcompany.com), which uses Anthropic as an AI subprocessor to generate the text.
• Service terms and privacy:
  • AltoGraph Terms: https://thereallyusefulappcompany.com/altograph/terms
  • AltoGraph Privacy Policy: https://thereallyusefulappcompany.com/altograph/privacy
  • Anthropic Privacy Policy: https://www.anthropic.com/legal/privacy

No data is sent until you enable automation, click the backfill button, or save a post while automation is enabled.