Founded 2025 - 8+ years experience
Image Alt Text Checker
Every image on a page with its alt text, size attributes and lazy-loading, and the ones missing alt text.
Why it matters
Alt text is how Google reads images and how image search sends traffic. Missing width and height attributes cause the layout shifts that hurt Core Web Vitals.
What you get
Every image on the page with its alt text, size attributes and lazy-loading flag, with the missing ones at a glance.
Part of the SEO Toolkit
47 tools, one subscription, no per-tool pricing. Monthly plan.
- ✓ Content, on-page and technical checks
- ✓ Keyword, SERP and rank tools on live Google data
- ✓ Image tools and AI writing assistants
- ✓ 1,500 runs a month, cancel any time
Already have one? Open the tool
More On-page tools
- Meta Tag AnalyzerTitle, description, robots, canonical, viewport, Open Graph and Twitter tags with length checks and what to fix.
- SERP Snippet PreviewSee how your title and description will look in Google on desktop and mobile, with live pixel-width limits.
- Meta Tag GeneratorFill in a few fields and get the complete head tags: title, description, robots, canonical, Open Graph and Twitter.
- Heading Structure CheckerThe H1-H6 outline of a page in order, with skipped levels, empty headings and missing H1 flagged.
- Link AnalyzerInternal and external links on a page, nofollow/sponsored flags, anchor texts and the domains you link out to.
Frequently asked questions
It is part of the SEO Toolkit subscription, which covers all 47 tools for one monthly price. There is no per-tool charge and you can cancel any time. North SEO's free tools are the Google Business Profile Audit and the Review Link Generator.
No. Everything runs in the browser or on our servers. Log in and use it from any device.
Live from the source: your page is fetched when you run the tool, Google data comes from live searches in the location you choose, and page speed comes from Google PageSpeed Insights.