Harness the power of AI for

Take web accessibility, SEO and user experience to the next level using CaptionAI. A cutting-edge AI-powered tool to generate automatic image captions, tags and many more.

No credit card required

Homepage feature showcase
a person holding a light bulb in hand
a person holding a light bulb in hand
hot air balloons up in the sky
hot air balloons up in the sky
a person on a beach watching sunset
a person on a beach watching sunset
a dog wearing a hawaiian shirt on the beach
a dog wearing a hawaiian shirt on the beach

Automate your SEO

AI generated image data in seconds

Send a request to our API and we'll automagically generate relavent caption, description and more for you within just a few seconds.


Web Accessibility

Improve accessibility for visually impaired users. Be mindful of the users using screen readers, and help them understand the overall context in which the images appear.

Content Discovery and SEO

Descriptive tags and caption has significant impact on the SEO. Enhance your search engine ranking and increase organic traffic with auto-captioning of images.

Blog Post & Articles

Auto-captioning and description generation can improve the overall accessibility and SEO of the content.

Auto Image Organization

Have a website with lot of user uploaded images? You can quickly organize them with auto tags and categories.

E-Commerce Websites

Images play a vital role in product presentation. Make product images more accessible, and upgrade search functionality to provide better results to users.

Social Media Platforms

Help users with disabilities access image content. Use relevant tags and categories to improve content discoverability.

❝ Learn about the strategies employed by tech giants such as Facebook and Cloudinary
CaptionAI cURL /caption request example CaptionAI cURL /caption request example CaptionAI cURL /caption request example

Powerful API to generate image metadata in seconds

Improve your site's usability, make it accessible to a diverse audience, including those with visual impairments, and boost your SEO rankings.

  • Generate alternate-text (caption), description and tags for image in seconds.
  • Add tags to user uploaded image automatically.
  • Improve your website's SEO by providing search engines with valuable metadata.
  • Meet accessibility standards and regulations such as WCAG (Web Content Accessibility Guidelines).
  • Make your website accessible to the wider audience.

Seamless Categorization: Discover the right category for your images

Use a custom list of categories to find the right one for your image. Categorize your images with precision and ease.

  • Categorize user uploaded images with ease.
  • Enhance user experience with rich search results.
  • Optimize image organization for seamless navigation and quick retrieval.
CaptionAI cURL /categorize request example CaptionAI cURL /categorize request example CaptionAI cURL /categorize request example

Get started for free

Boost your SEO to new heights. Maintain competitive edge in web accessibility and stay ahead in the digital race.

$0 / onetime

Experience CaptionAI for Free!

No credit card required.

Curious to try before committing? No worries, we've got you covered. Sign up now for free and receive 120 credits to explore all our amazing features. Let's make web more Accessible!


Tailor your experience with the ideal plan to elevate your SEO strategy!

Yearly Save 2 months
Early bird pricing


$19 / month

$199 / year

For hobbyist, passion projects and indie hackers

Great for personal projects
  • 700 images a month or 9k a year
  • Access to all APIs
  • Credit counted only for successful requests
  • Regular email support


$59 / month

$599 / year

For serious businesses

Great for businesses with lots of images
  • 3000 images a month or 40k a year
  • Extra 4k credit on a yearly plan
  • Access to all APIs
  • Credit counted only for successful requests
  • Early access to new Features
  • Priority email support
❝ Explore the significance of Web Accessibility and its Legal Implications!

Frequently Asked Questions

If you have any questions not answered in the FAQ, please do not hesitate to reach out to us at [email protected]

CaptionAI is an AI-powered tool that generates automatic image metadata, such as captions and descriptions. This metadata can improve web accessibility, SEO rankings, and user experience.

It works by analyzing images and generating captions and descriptions that accurately describe the content of the images. This metadata can be used to improve the accessibility of websites for people with disabilities, as well as to help search engines index images and make them more discoverable.

In addition to generating captions and descriptions, CaptionAI also provides tools to properly tag and categorize images. This can help users find the images they are looking for more easily, and it can also help improve the SEO of your website.

Auto-captioning can benefit your website in several ways, but most importantly, it can help improve web accessibility, SEO, and the user experience of your website. Specifically, auto-captioning can help people with disabilities understand your content.

Web accessibility is mandated by law in many countries. Implementing auto-captioning ensures that your website complies with accessibility regulations, such as the Americans with Disabilities Act (ADA) and Section 508 of the Rehabilitation Act. Auto-captioning can help reduce the risk of legal issues and demonstrate your commitment to inclusivity.

The accuracy of AI-generated metadata largely depends on the complexity of the images. Our model is capable of generating highly accurate caption for the images. However, it's essential to note that no AI system is perfect, and occasional errors may occur.

In the near future, we will give you the ability to add hints which would help to generate precise caption and description for the image.

We don't store anything locally on our servers. However, we do send the images to state-of-the-art models to process your image. This is necessary because these models are trained on a massive dataset of images, and they need to access that dataset in order to generate accurate captions and descriptions.

These models are hosted on highly reputable and secure platforms, ensuring the utmost confidentiality and protection of your data throughout the processing phase. Once the AI completes the metadata generation process, we receive the results and promptly deliver them back to you.

Apart from that, your payment information are handled by a secure third party platform, Paddle.