Image SEO Lab
Crawler

ImageSEOLabBot

This page explains the crawler you may have seen in your server logs.

What it is

ImageSEOLabBot is the web crawler used by Image SEO Lab, a tool that generates SEO metadata (titles, alt text, captions, and descriptions) for the images on a website.

Its full user-agent string is:

Mozilla/5.0 (compatible; ImageSEOLabBot/1.0; +https://imageseolab.com/bot)

Why it visited your site

The crawler only visits a site when a signed-in user of Image SEO Lab submits that site's URL for a scan. It does not crawl the web at large, build a search index, or discover sites on its own. Our terms require users to scan only websites they own or have permission to access.

What it does

  • Requests public HTML pages on the submitted site and reads the images referenced in them.
  • Reads page context around each image — headings, nearby text, and the page title — so the generated metadata is relevant.
  • Downloads image files temporarily to analyse them. We do not store your images; only the image URL and the generated text are kept.
  • Does not submit forms, attempt logins, or access pages behind authentication.

How it behaves

  • It reads and obeys robots.txt, including Disallow rules and Crawl-delay.
  • It requests pages at a modest rate and is limited to a bounded number of pages per scan.
  • It identifies itself honestly and does not attempt to disguise itself as a browser or another bot.

How to block it

Add the following to the robots.txt file at the root of your site:

User-agent: ImageSEOLabBot
Disallow: /

The crawler checks robots.txt on every scan, so the rule takes effect on the next visit. To block it at the network level instead, deny requests whose user-agent contains ImageSEOLabBot.

Contact

If the crawler behaved incorrectly, ignored your robots.txt, or placed unexpected load on your server, please tell us at support@imageseolab.com or through the contact form, and include your domain and the relevant log lines. We investigate every report.