| What it does | Free AI alt text generator that creates SEO-optimized image descriptions in seconds
| See what ChatGPT, Claude, Perplexity and Google actually get from your site
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| Stage | Not given
| Startup
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| Founded | Not given
| 2026
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| Based in | Not given
| US
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| Pricing model | Freemium
| Freemium
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| Pricing | Not given
| Free scans with no account. One site: fix service $100 once with 30 days included, then Watch at $29 per month for up to 3 sites. Multiple sites: Developer API at $99 per month for 2,000 scans, Growth at $499 per month for 20,000 scans, or Agency at $249 per month for 40 domains. Add-ons: Evidence $
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| Key features | - URL-based image analysis
- Multi-language support including English, Spanish, French, German, Chinese, Japanese, Korean, Arabic and more
- Instant generation under 3 seconds per image
- Copy-to-clipboard functionality
- Works with PNG, JPG, GIF and WebP formats
- No hallucination or fabricated details
| - Free A–F audit with no signup required
- Tests 13 crawler identities including GPTBot, ClaudeBot, PerplexityBot, and Googlebot
- Monitors sites twice daily with regression alerts
- Signed, offline-verifiable answers using Ed25519 keys
- Checks machine files: robots.txt, llms.txt, agents.md, and structured data
- Implementation service to fix crawler access issues for $100
- Published rulebook with 106 publicly accessible rules
- API for agencies and tools measuring multiple sites
- Browser extension showing how crawlers see your homepage
- Blockchain-anchored daily seal of measurements via Bitcoin
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| What makes it different | - Processes batches of 50+ images in about a minute versus 2-3 minutes per image manually
- Includes relevant keywords naturally woven into descriptions for better rankings
- Understands multiple visual elements including objects, colors, text and spatial relationships
| - Signed, offline-verifiable results anyone can check without trusting the company
- Tests what AI models actually receive from your site, not just SEO rankings
- Transparent, published rules that never change based on payment tier
- Built for the agentic web as a verification layer for agents to act autonomously
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 6 ▲ +1 (up) since last check | 28 ▼ −1 (down) since last check |
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| Trust Flow (Majestic) | 4 | 9 |
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| Citation Flow (Majestic) | 11 | 31 |
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| Referring domains (Majestic) | 12 | 46 |
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Altxt AI
CrawlCheck