SITEAUD!TLINT CONSULTING
Image SEO audit for accessibility, speed, and image search
Assess how images are implemented, described, delivered, and discovered across your website. A consultant reviews alt text, file formats, loading behavior, and image discoverability, then gives developers and content teams a prioritized optimization plan.
Fixed quote after a short scoping call. No retainer required.
Founder · Technical SEO Consultant
Developer of SiteAud!tLint
Last reviewed
- Issue
- Hero images on 640 blog posts load lazily and are the Largest Contentful Paint element.
- Evidence
- Field data shows poor LCP on mobile for the blog template, and the hero uses loading="lazy" with a 1.8 MB JPEG.
- Cause
- The theme applies lazy loading to every image, including above-the-fold heroes.
- Fix
- Load the hero eagerly with fetchpriority="high", serve AVIF or WebP with srcset, and keep lazy loading below the fold.
- Validate
- LCP field data for the template and image transfer size.
Signs you need an image SEO audit
- Many images have missing, empty, or file-name alt text.
- Large images slow down pages on mobile.
- Images do not appear in Google Images for relevant searches.
- Broken image URLs appear after a CMS or CDN change.
- Lazy loading is applied everywhere, including hero images.
- Accessibility reviews flag image descriptions.
What the image SEO audit covers
Alt attributes
Whether images are described usefully for users and search engines.
- Missing, empty, and file-name alt text
- Decorative images that should use empty alt
- Alt text that matches image purpose and page context
File size, format, and dimensions
Whether images are delivered efficiently.
- Oversized files and dimensions
- Modern formats such as WebP and AVIF
- Compression settings by template
Image URLs and broken resources
Whether image files are reachable and stable.
- 404 and redirected image URLs
- CDN and hotlink rules
- Descriptive file names and stable paths
Placement and relevance
Whether images support the page content.
- Images near relevant text and captions
- Stock imagery versus original images
- Images inside CSS backgrounds that cannot be indexed
Lazy loading and responsive images
Whether images load at the right time and size.
- Lazy loading on above-the-fold images
- srcset and sizes implementation
- Width and height to prevent layout shift
Image sitemaps and discovery
Whether search engines find important images.
- Image sitemap coverage where applicable
- Images loaded only by JavaScript
- Robots rules on image directories
Patterns we trace to a single cause
Lazy-loaded LCP image
A theme-wide lazy loading rule often delays the main image on every page.
CMS default alt text
Uploads that inherit file names as alt text affect thousands of images at once.
CDN migration breakage
Image URLs change without redirects, breaking image search visibility.
CSS background heroes
Key images set as backgrounds are invisible to image search.
How the audit works
Scope the audit
We confirm goals, priority pages or sections, and recent changes that shape where to look first.
Collect evidence
We crawl the site and review Search Console, analytics, and other data you share.
Group by pattern
Issues are grouped by template, section, or URL pattern instead of listed one URL at a time.
Trace root causes
Each pattern is traced to the setting, template, or process that produces it.
Prioritize and validate
Fixes are ranked by impact, reach, and effort, and rechecked after release when validation is in scope.
What you receive
Image issue inventory
Every issue by template, image type, and affected URLs.
Prioritized recommendations
Fixes ranked by page value, reach, and effort.
Developer checks
Loading, format, and responsive image requirements with tests.
Content team guidance
Alt text and file naming rules for future uploads.
What we need from you
- Google Search Console access
- CMS and CDN details
- Priority templates or page types
- PageSpeed or CrUX data access (optional)
Who this audit is for
A good fit if
- Your site relies heavily on images
- Pages are slow because of image weight
- Image search is a meaningful traffic source
- Accessibility of images needs review
Included vs. optional
- Core: all six areas above
- Optional: visual quality review
- Separate: full Core Web Vitals and performance audit
- Separate: image production and editing
Image SEO Audit vs. other SEO services
Quoted to your scope.
Pick the engagement closest to what you need, tell us about your site, and you get a fixed quote after a short scoping call.
Questions, answered.
What does an image SEO audit include?
Alt attributes, file size and format, broken image resources, placement and relevance, lazy loading and responsive images, and image sitemap coverage.
Does it cover Core Web Vitals?
It covers image-related performance factors such as LCP images and layout shift. Full Core Web Vitals measurement may need additional performance tools and is a separate scope.
What makes good alt text?
Alt text that describes the image's purpose in its context, concisely. Decorative images should use empty alt text.
Do I need an image sitemap?
Not always. It helps when images are loaded in ways crawlers may miss or when image search matters to your business.
Do you compress or edit images?
No. We provide the requirements and settings. Compression and editing are handled by your team or tools.
How long does it take?
Most audits are delivered within one to two weeks.
Get a clear, prioritized plan
Send your website URL and what you are investigating, and we will scope an image SEO audit around your goals.