Email Image Alt-Text Checker

Email Image Alt-Text Checker audits the images in your email HTML for missing, empty, duplicate, and potentially weak alt text. Paste an exported campaign or select an HTML file to get an image-by-image accessibility report, then fix issues before you send.

Alt text helps subscribers understand your email when images are disabled or unavailable, and it gives screen-reader users meaningful alternatives to visual content. This free checker runs locally in your browser: your email HTML is never uploaded or saved.

• Image-by-image audit: Finds every image tag in your email HTML and lists its source, alt text, and status.
• Missing-alt detection: Flags images with no alt attribute, which should be reviewed for accessibility.
• Empty-alt review: Separates intentionally decorative images from images that may be missing important fallback content.
• Duplicate-text detection: Highlights repeated alt text for a quick context review.
• Quality prompts: Identifies overly long descriptions and generic filename-style alt text.
• Private browser analysis: Paste email code or open a local file without sending it anywhere.

1. Export your finished email HTML from your ESP, email builder, or development environment.
2. Paste the HTML or choose the file in the checker above.
3. Review the summary for images without alt attributes, empty alt text, and quality warnings.
4. Open each flagged image and decide whether it is informative, linked, functional, or purely decorative.
5. Write purposeful alt text for informative images, use alt="" for decorative images, and retest the final exported HTML.

Example 1: Product image. A linked shoe image uses alt="Shop women's running shoes". This conveys the purpose of the visual and the action available to the recipient.

Example 2: Decorative divider. A thin horizontal flourish uses alt="". Because it adds no information, screen readers can skip it.

Example 3: Campaign banner. Instead of alt="hero-banner-final-v3.jpg", use a concise message such as alt="20% off outdoor furniture through Sunday". Keep the offer details as live text too.

• More inclusive campaigns: Give screen-reader users a clearer, less frustrating email experience.
• Resilient messaging: Preserve key meaning when recipients block images or images fail to load.
• Faster QA: Audit every image tag in one place before a campaign is scheduled.
• Better content discipline: Identify image-only calls to action and move essential information into reliable HTML text.
• Free and private: No account, upload, or stored email content.