Image ALT Checker for page-ready image SEO
Check a live page for missing ALT text, empty ALT attributes, heavy image files, unknown file sizes, and WebP opportunities before publishing.
One page
Focused live URL image audit
ALT + weight
Review content and file signals
Fix Pack
Copy-ready handoff workflow
Focused checks for image SEO, file weight, and publishing QA.
The Image ALT Checker keeps the review practical, so content, SEO, and development teams can act on the right image issues quickly.
Use it during internal linking audits, content optimisation, technical SEO reviews, website migrations and content hub planning.
Find missing ALT text
Detect images where the ALT attribute is missing or empty so meaningful images can be reviewed before publishing.
Flag heavy images
Identify images above your selected threshold, such as 100 KB, 200 KB, 500 KB, or 1 MB.
Find WebP candidates
Review JPEG, PNG, GIF, and other non-WebP images that may benefit from modern image formats where appropriate.
Review modern image attributes
Include common lazy-loading attributes, srcset candidates, unknown file sizes, and basic delivery details for manual review.
Make visual pages easier to understand, faster to load, and cleaner to hand off.
ALT text helps describe meaningful images when they cannot be seen or loaded. File weight affects page loading and user experience. Wranker brings both checks into one focused page-level image audit workflow.
Improve image SEO
Review missing ALT text and image formats before publishing important pages.
Support accessibility checks
Find images that may need descriptive ALT text for users who rely on assistive technologies.
Reduce page weight
Identify large image files that may need compression, resizing, or replacement.
From live URL to a focused image audit workflow.
The landing page stops at the input. After you run the check, Wranker handles the image results, tabs, Fix Pack, exports, and report in the app.
Enter a live page URL
Add the URL of the page you want to audit. This tool checks one page only.
Choose image audit settings
Set the large image threshold and decide whether to evaluate srcset, lazy attributes, and redirects.
Run the check
Wranker parses the page and reviews detected images for ALT, size, format, and opportunities.
Review result tabs
Use Overview, Missing ALT, Large Images, WebP Opportunities, and Fix Pack in the app dashboard.
A practical image QA layer for publishing, auditing, and handoff.
Use the Image ALT Checker before important pages go live, during technical SEO reviews, or whenever image-heavy pages need a focused cleanup pass.
Blog post QA
Check article images for missing ALT text and heavy files before publishing.
Landing page review
Review hero images, screenshots, and visual sections before launching campaigns.
Accessibility review
Identify images that may need descriptive ALT text or decorative empty ALT attributes.
Page speed cleanup
Find large images and non-WebP formats that may increase page weight.
Continue the page review with connected SEO tools.
Pair image QA with broader on-page, content, speed, and technical SEO workflows.
Website SEO Analyzer
Run a broader page-level SEO check after reviewing image issues.
OpenOn-Page SEO Checker
Review title tags, headings, content structure, and on-page signals.
OpenContent Optimizer
Improve page copy after image ALT and content QA checks are complete.
OpenPage Speed Checker
Run deeper performance checks for slow or image-heavy pages.
Common questions about image ALT and file weight checks.
Answers are scoped to this focused single-page Image ALT Checker.
An Image ALT Checker scans a page to find images with missing or empty ALT text so they can be reviewed and fixed.
Yes. The tool is designed to check one live page URL. It should not be described as scanning staging, private, or password-protected URLs unless that functionality is confirmed.
Missing ALT means the image either has no ALT attribute or has an empty ALT value. These images should be reviewed manually.
No. Meaningful images should usually have descriptive ALT text. Decorative images can use an empty ALT attribute such as alt="".
Yes. It can flag images above your selected file weight threshold, where file size data is available.
Some servers block header requests or do not return content length. In those cases, the tool marks image size as Unknown.
WebP opportunities are non-WebP image files that may benefit from conversion to WebP where quality and browser support allow it.
Yes. You can edit suggested ALT text, copy ALT text, copy image URLs, or copy HTML snippets.
Yes. Use Download Report when you need to share findings with developers, content teams, or clients.
No. It is a focused page-level image ALT and file weight check. For broader performance testing, use Wranker’s Page Speed Checker or Site Audit Tool.
Check image ALT text and file weight before publishing
Enter a live page URL to find missing ALT text, heavy images, unknown file sizes, and WebP opportunities.
Use the Fix Pack and exports for content QA, accessibility review, developer handoff, and image SEO improvements.