Image Alt Checker
Scan your website for missing alt text and improve SEO & accessibility
How to Use the Image Alt Checker
Check your website’s alt text in three simple steps.
Enter Your Website URL
Type or paste the web address of any page you want to check. It can be your own website or any other webpage on the internet.
Automatic Alt Text Scan
The tool quickly scans the page and finds all images. It checks each image to see if it has alt text or if the alt text is missing.
Review Your Results
See a complete list of all images with their current alt text. Identify which images need alt text added to improve accessibility and SEO.
Online Image Alt Text Checker
Scan any webpage to find images with missing or empty alt text. This Image Alt Checker helps you improve your website’s accessibility and SEO by identifying images that need descriptive alt attributes. Simply enter a URL and get a complete report of all images and their alt text status.
What is Alt Text?
Alt text (also called alternative text or alt attribute) is a short description that explains what an image shows. Think of it as a text backup for images. When an image cannot be displayed or when someone using a screen reader visits your website, the alt text is read aloud or shown instead.
Good alt text helps everyone understand your images — including people who are blind or have low vision, users with slow internet connections, and search engines like Google.
Why Use the Pixellize Image Alt Checker?
The Pixellize Image Alt Checker helps you find images on your website that are missing alt text. This tool makes it easy to improve your website’s accessibility and search engine rankings.
Key Benefits:
- Quick scanning: Check entire webpages for alt text in seconds.
- Clear results: See which images have alt text and which ones don’t.
- Accessibility improvement: Make your website usable for everyone, including people with disabilities.
- SEO benefits: Help search engines understand your images and rank your pages better.
- Easy to understand: Results are presented in simple language that anyone can follow.
- No installation needed: Works directly in your web browser.
What Does This Tool Check?
When you scan a webpage with the Image Alt Checker, you’ll get information about:
- Total number of images found on the page
- Which images have alt text descriptions
- Which images are missing alt text completely
- Which images have empty alt text (alt=””)
- The actual alt text content for each image
- The image file names and locations
This information helps you understand exactly which images need attention and allows you to add proper descriptions where they’re missing.
Why Alt Text Matters
1. Accessibility for All Users
People who are blind or have vision problems use screen readers — software that reads webpages aloud. Without alt text, these users miss important information. Adding alt text ensures everyone can understand your content.
2. Better Search Engine Rankings
Search engines like Google cannot “see” images the way humans do. They rely on alt text to understand what images show. Good alt text helps your images appear in Google Image Search and can improve your overall page rankings.
3. Backup When Images Don’t Load
Sometimes images fail to load due to slow internet, broken links, or browser settings. When this happens, the alt text appears instead, so visitors still understand what the image was about.
Check Your Website’s Alt Text Now
Enter any webpage URL into the Pixellize Image Alt Checker to instantly see which images need alt text. Improve your website’s accessibility and SEO today — no technical knowledge required.
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Frequently Asked Questions
What is an Image Alt Checker and how does it work?
An Image Alt Checker is a tool that scans webpages to find all images and checks whether they have alt text (alternative text descriptions). When you enter a URL, the tool examines the HTML code of that page, identifies every image, and tells you which images have alt text and which ones are missing it. This helps you quickly spot accessibility and SEO problems on your website without manually checking each image.
Why is alt text important for my website?
Alt text is important for three main reasons. First, it makes your website accessible to people who are blind or have low vision by allowing screen readers to describe images aloud. Second, it helps search engines like Google understand what your images show, which can improve your search rankings and help your images appear in Google Image Search. Third, alt text displays when images fail to load, ensuring visitors still understand your content even with slow internet or technical issues.
How do I write good alt text for my images?
Good alt text should be descriptive but concise. Describe what the image shows in one or two short sentences (usually 125 characters or less). Focus on the important details and the purpose of the image. For example, instead of "image123.jpg," write "woman typing on laptop in modern office." Avoid phrases like "image of" or "picture of" — just describe what you see. For decorative images that don't add information, you can use empty alt text (alt="") to let screen readers skip them.
Can this tool check password-protected or private pages?
No, the Image Alt Checker can only scan publicly accessible webpages that don't require a login. If a page is behind a password, members-only area, or requires authentication, the tool won't be able to access it. However, you can check any public page on your website, your competitors' websites, or any other publicly available webpage on the internet. For private pages, you'll need to check the alt text manually by viewing the page's HTML code.