CodeItBro

Image Alt Tag Checker

Find missing, empty, or duplicate alt attributes. Paste your HTML snippet and get instant accessibility feedback.

Results

Run the checker to view issues.

Every image deserves context

Scan templates, blog posts, and landing pages to make sure you’re delivering alt tags that describe the image for both humans and search bots.

  • • Highlight missing or empty alt text
  • • Detect duplicated alt descriptions
  • • Rapid QA for content and SEO teams

Accessibility

Alt Tag Audit

Unique, descriptive alt text
Avoid empty alt on informative imagery

How It Works

The Image Alt Tag Checker runs entirely in your browser using JavaScript. Unlike other tools that send your data to a server, we process everything locally on your device. This guarantees 100% privacy and blazing fast speed.

  • No server interaction – data never leaves your device
  • Instant results since there is no network latency
  • Works offline once the page is loaded
  • Free to use with no usage limits

How to Use

1

Paste HTML

Drop in your template, CMS snippet, or rendered HTML.

2

Run Checker

We scan every <img> tag and evaluate its alt attributes.

3

Fix Issues

Get clear guidance on missing, empty, or duplicate alt text.

Frequently Asked Questions

Why do alt tags matter?
Alt text improves accessibility, helps screen readers describe images, and provides context for search engines.
Does Google use alt text for rankings?
Yes, alt text is a lightweight signal for image search and general relevance, especially for product and blog imagery.
What is considered a good alt description?
Describe what’s in the image and how it relates to the surrounding content. Avoid keyword stuffing.
Can I leave alt empty?
Leave alt="" only when the image is purely decorative. Otherwise provide a helpful description.
Does this tool check images loaded by CSS?
No. Alt tags apply to HTML <img> elements only. CSS background images do not use alt attributes.

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The Image Alt Tag Checker is maintained by CodeItBro. We aim to provide the best free developer tools on the web. If you have feedback or suggestions, please visit our contact page.