A full image inventory.
See thumbnails, URLs, statuses, usage and issues in one table, with filters for each kind of problem.
- Thumbnail previews
- Usage count and source pages
- Filters for alt, dimensions and weight
Image SEO analysis for alt text, size and format
Crawl every image on your site and see which ones lack alt text, slow pages down or are broken, along with the pages that use them.
TL;DR
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What is image SEO analysis?
Image SEO analysis checks the images on your site for the issues that affect accessibility, search and speed. BigRank lists every image the crawler finds with its status, usage and issues.
- What issues are detected?
- Missing alt text, missing width and height, broken images, oversized files, legacy formats and missing srcset.
- What counts as oversized?
- Files larger than 200 KB.
- Which formats are flagged as legacy?
- Images served without a WebP or AVIF alternative.
- Can I find where an image is used?
- Yes. Each image lists the number of pages using it and the source pages.
What the image report covers
Images are collected in the same crawl as your pages, so every finding leads back to the pages that use it. Each image is listed once with its status, usage count and issues, and every filtered list can be exported.
Missing alt text
Filter images that have no alt attribute, or only those that have one.
- Missing alt filter
- Has alt filter
- Images missing alt per page
Dimensions
Find images without width and height attributes, which can cause layout shift.
- Missing width or height
- Has dimensions filter
- A common cause of layout shift
Broken images
Filter by 4xx and 5xx responses to find images that no longer load.
- 4xx and 5xx images
- 3xx redirecting images
- A dedicated Broken filter
Oversized files
Flag images larger than 200 KB so you can compress them.
- Files over 200 KB
- Weight shown per image
- Source pages for each heavy file
Legacy formats
Spot images that lack a WebP or AVIF version.
- No WebP or AVIF version
- Usage count per legacy image
- Exportable list to convert
Responsive srcset
See which images have a srcset and which don't.
- Has srcset filter
- Missing srcset filter
- Source pages per image
Source and format filters
Separate external images, SVGs and data URIs from the images you host yourself.
- External images
- SVG files
- Data URIs
Usage and source pages
Every image shows how often it is used and the pages that contain it.
- Thumbnail and image URL
- Usage count per image
- Drill-down list of pages
Lighter, faster pages.
Oversized files and legacy formats slow pages down. Find the heaviest images and replace them with modern formats.
- Files over 200 KB
- Missing WebP or AVIF
- Fewer bytes for faster loading
Better accessibility and search.
Alt text helps people using screen readers and gives search engines context. Missing alt text is listed per image and per page.
- Images missing alt per page
- SVG, data URI and external filters
- Export to CSV or XLSX
SEO MCP
Ask your AI assistant about Image SEO Analysis.
Ask your assistant how many images lack alt text, whether a given page has any, or which image issues the latest crawl reported.
From scan to optimized images
Image fixes are cheapest in bulk. Filter to one issue at a time, fix the images on their source pages or in your media library, then recrawl to confirm.
Crawl the site
Images are collected during the crawl.
Filter by issue
Choose missing alt, oversized, legacy format or broken.
Open the source pages
See where each image appears so you can edit it in context.
Recrawl
Confirm the issues are gone.
When teams audit images
The image report is the right tool whenever a project touches media: a speed push, an accessibility review, a CMS or file migration, or a planned move to modern formats.
Speed projects
Find the heaviest assets before a performance push.
Accessibility reviews
List every image without alt text.
CMS migrations
Check for broken image URLs after moving files.
Format upgrades
Plan a move to WebP or AVIF with a list of what to convert.
Images, page speed or the whole site?
Use Image SEO Analysis for alt text, size and format issues on every image, Core Web Vitals to see whether heavy pages load slowly for visitors, and Website Audit for every issue across the site.
Image SEO Analysis
List every image the crawler finds with its status, usage and issues, from missing alt text to files over 200 KB.
Core Web Vitals
Rate LCP, CLS and INP for your key pages from daily lab tests and real-user data, with history and regression alerts.
Website Audit
Crawl the whole site and get a health score with issues grouped by severity, from titles and headings to indexability.
Keep going
Go beyond the image report
Image issues often travel with other problems. Check how heavy pages score on speed, fix broken links found in the same crawl, and review the full audit.
Image SEO Analysis FAQ
Answers about external images, srcset, exports, how file size relates to rankings, how images are found and why missing dimensions are flagged.
Are external images included?
Yes. External, SVG and data URI images have their own filters.
Does the report show responsive images?
Yes. You can filter for images with or without a srcset.
Can I export the list?
Yes, as CSV or XLSX.
Does an oversized image always hurt rankings?
Not directly, but heavy images slow pages, which can affect loading metrics.
How are images found?
The crawler records every image on the pages it visits, so the report covers the same pages as your site crawl.
Why flag images without width and height?
Without them the browser can't reserve space for the image, so the layout can shift while it loads.
SEO that fits your budget
Plans start at $19/month with a 7-day free trial. Every plan includes the site audit, Search Console insights and white-label reports.