Free AI alt text generator that creates SEO-optimized image descriptions in seconds
Free website speed test measuring multiple pages with Core Web Vitals, lab metrics, competitor benchmarks and AI recommendations
Stage
Not given
Not given
Founded
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Based in
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DE
Pricing model
Freemium
Freemium
Pricing
Not given
Free: test up to 3 pages with manual measurements only. Solo: €23/month or €230/year (25 monitored URLs, daily or weekly monitoring, 600 tests/month). Agency: €59/month or €590/year (150 monitored URLs, monitoring every 6 hours, 4,000 tests/month). Scale: €119/month or €1,190/year (500 monitored URL
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
Tests multiple pages automatically from sitemap
Competitor benchmark comparison with up to 4 competitors
Shows Core Web Vitals from real Chrome users
PageSpeed history tracking over time
Performance budgets with email alerts
Shareable reports with 365-day links
REST API and MCP access for AI agents
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
Tests several pages simultaneously instead of one URL at a time
Combines field data from real users with lab metrics in one report
Built-in competitor benchmarking against up to 4 domains
Industry-specific benchmarks showing what is normal in each sector
No sign-up required for free testing on any website
Altxt AI
PerfDelta