Image Alt Tag Checker — Find Missing Alt Text Fast
Audit every image on any webpage for missing, empty, or poorly written alt attributes. Improve accessibility and SEO in seconds.
Image Breakdown
| # | Image Source | Alt Text | Status | Issue |
|---|
Diagnostic Checks
Actionable Recommendations
What is an Image Alt Tag Checker?
An automated auditing tool that scans your webpages to ensure every visual element has appropriate, SEO-optimized, and accessible alternative text.
Accessibility Scanner
Instantly identify images missing alt attributes, ensuring your website remains compliant with WCAG 2.1 and ADA accessibility standards.
SEO Optimization
Evaluate the quality of your alt text to ensure search engines properly understand and index your visual content for Google Images.
Empty Tag Detector
Differentiate between genuinely decorative images using `alt=""` and critical informational images that accidentally had their descriptions left blank.
Length & Context Evaluator
Automatically flag descriptions that are too vague, overly stuffed with keywords, or excessively long (over 125 characters).
Why Are Image Alt Attributes Important?
Alternative text is the bridge between visual media and text-based web crawlers, providing crucial context for both users and algorithms.
Screen Reader Support
Visually impaired users rely entirely on screen readers. Alt text translates your images into spoken words, delivering a complete user experience.
Google Image Search
Search engines cannot "see" images. Alt text acts as the primary ranking factor for appearing in highly lucrative image search results.
Broken Link Fallback
If an image fails to load due to a slow connection or broken URL, the browser displays the alt text, preserving the context of your page.
Voice Search & AI
As AI summarizers and voice assistants parse web content, descriptive alt tags ensure your visual data is included in AI-generated answers.
How to Write Perfect Alt Text for SEO?
Follow these proven copywriting guidelines to create alternative text that satisfies accessibility requirements and boosts rankings.
Be Specific & Descriptive
Don't just write "dog". Write "Golden Retriever catching a red frisbee in a sunny park." Paint a precise picture for the user.
Avoid Keyword Stuffing
Never write "shoes, cheap shoes, buy shoes online". Search engines penalize repetitive keyword stuffing. Use natural, conversational language.
Skip "Image of..."
Screen readers already announce that an element is an image. Starting your alt text with "Picture of..." is redundant and wastes valuable characters.
Keep it Under 125 Characters
Most screen readers cut off alt text around 125 characters. Keep descriptions concise, and move longer explanations into the main body text.
Who Needs to Audit Image Alt Tags?
Regularly auditing your media library is crucial for any digital professional focused on traffic, compliance, and user experience.
SEO Specialists
Identify missed ranking opportunities. Auditing tags helps SEOs inject relevant semantic keywords into highly trafficked infographics and blog banners.
Web Developers
Ensure templates and CMS outputs automatically generate the correct HTML attributes, protecting the site from accessibility lawsuits.
Content Publishers
Editorial teams use our tool to batch-check articles before publishing, ensuring no editor forgot to tag the featured images.
E-Commerce Owners
Product images drive sales. Optimizing product gallery alt tags ensures your inventory appears when shoppers browse Google Shopping tabs.