AI Auto Alt Text Generator vs Accessibility by AllAccessible

AI Auto Alt Text Generator is a lightweight, privacy-conscious plugin that uses OpenAI vision-capable models (defaulting to GPT-5.4 nano, with GPT-5.4 mini and legacy GPT-4o mini options) to create meaningful, screen-reader-friendly alt text and SEO-friendly titles for your images. Whether you add a single image, bulk-process your library, or just want a one-click fix in the Media Library, the plugin handles it all – no manual effort required. This solution is far cheaper than many alternatives because it cuts out the middle-person. You’ll just need to bring your own OpenAI API key. ✨ Key features Automatic alt text on upload – set-and-forget accessibility. Optional automatic image titles – improve SEO with descriptive titles. One-click manual generation – “Generate Alt Text & Title” button in the Media Library. Bulk update tool – batch-process existing images, including those that only have filename-based alt text, with a configurable pause between batches. Prompt fine-tuning – supply site-wide context and optionally include the image file name. Model selection – default to GPT-5.4 nano (fastest & cheapest) or switch to GPT-5.4 mini for higher quality; legacy GPT-4o mini and GPT-5 mini/nano remain available. Image size & detail control – choose the resolution and level of visual detail sent. Developer-friendly – filters and actions to customise prompts, models and output, plus optional outgoing webhooks. WordPress Abilities API – registers a generate-alt-text ability (WordPress 6.9+/7.0) so core AI, agents and automation tools can generate alt text. No extra servers – data flows only between your site and OpenAI; nothing is stored off-site. Multilingual output – choose English (UK), English (US) or other popular languages. (English US is the default.) 🧭 Where to find the bulk tool Tools → Bulk Alt Text Update Media → Bulk Alt Text Update (shortcut that redirects to the Tools page) Settings → Alt Text Generator includes a button linking straight to the bulk page 🧠 How it works When an image is uploaded (or manually chosen), the plugin creates a temporary public URL for that image. It sends the image – plus optional context such as the parent post title, your custom site context and the file name – to your selected OpenAI vision model. OpenAI returns a concise description. Alt text is stored in WordPress’ native _wp_attachment_image_alt field. (Optional) The returned title is stored as the attachment post title. Nothing is cached or stored on OpenAI’s side; only the final strings live in your database. Settings overview OpenAI API Key – Required to connect to OpenAI. OpenAI Model – GPT-5.4 nano (default), GPT-5.4 mini, or legacy GPT-4o mini / GPT-5 mini / GPT-5 nano. Image Size to Send – Thumbnail, Medium, Large, or Full. Image Detail Quality – ‘Low’ or ‘High’ (Low uses fewer tokens). Bulk batch size – Number of images per batch (lower values reduce rate-limit risk). Site Context – Optional free-form prompt guidance (brand voice, niche, etc.). Send Image File Name – Include file name in the prompt for extra context. Automatically Generate Title – Add descriptive titles alongside alt text. Use full context for image titles – When enabled, title generation includes site context and file name (uses more tokens). Bulk optimiser delay (seconds) – Pause between batches during bulk runs. OpenAI request timeout (seconds) – Max wait time for OpenAI responses (10–120s) to reduce timeout failures on slower hosts. Output Language – Default English (US). Choose English (UK) for British spellings or another popular language; outputs (alt text and titles) will be generated in the selected language. Webhook URL & signing secret – Optionally POST generated alt text/titles to an external endpoint (with an optional HMAC-SHA256 signature) for automation and logging. Developers The plugin is extensible via standard WordPress hooks, an outgoing webhook, and the WordPress Abilities API. Filters aatg_alt_text_prompt ( $prompt, $post_ID, $context ) – customise the alt-text prompt. aatg_image_title_prompt ( $prompt, $post_ID, $context ) – customise the title prompt. aatg_openai_request_payload ( $payload, $context, $messages ) – customise the full OpenAI request (model, messages, reasoning effort). aatg_generated_alt_text ( $alt_text, $post_ID ) – filter alt text before it is saved. aatg_generated_title ( $title, $post_ID ) – filter the title before it is saved. aatg_is_low_quality_alt ( $is_low, $alt, $post_ID ) – control which existing alt text the bulk tool regenerates. aatg_webhook_payload ( $payload, $post_ID, $result ) – customise the outgoing webhook body. aatg_supported_image_extensions ( $extensions ) – customise which image formats are sent to OpenAI (default: PNG, JPEG, GIF, WebP). Actions aatg_after_alt_text_generated ( $post_ID, $alt_text ) aatg_after_title_generated ( $post_ID, $title ) aatg_after_generation ( $post_ID, $result ) Outgoing webhook Set a Webhook URL under Settings → Integrations & Webhooks to receive a non-blocking JSON POST after each generation. If a signing secret is set, requests include an X-AATG-Signature: sha256=… header (HMAC-SHA256 of the body) so your endpoint can verify authenticity. WordPress Abilities API On WordPress 6.9+ the plugin registers the ability ai-auto-alt-text/generate-alt-text (input: attachment_id) so WordPress core AI, agents, MCP servers and automation tools can generate alt text programmatically. Execute it with wp_get_ability( 'ai-auto-alt-text/generate-alt-text' )->execute( array( 'attachment_id' => 123 ) ). External services This plugin connects to the OpenAI API to generate alt text and (optionally) image titles. Endpoint: https://api.openai.com/v1/chat/completions When called: On image upload (automatic) Via “Generate Alt Text & Title” button in Media Library (manual) Via Tools → Bulk Alt Text Update (bulk) Data sent: image URL, optional file name, optional site context, optional parent post title Terms: https://openai.com/policies/terms-of-use Privacy: https://openai.com/policies/privacy-policy If you configure a Webhook URL, generated alt text/titles (and the image URL) are also sent to that endpoint you control.

AllAccessible is the WordPress-native accessibility plugin. Unlike overlay-only widgets, AllAccessible brings accessibility right into your WordPress workflow: a per-page accessibility score in the post editor, an accessibility column on your Posts and Pages lists, unlimited AI-written alt text and agentic AI fixes on every paid plan, and human-in-the-loop approval before anything goes live. Built over 5+ years and trusted on thousands of websites, AllAccessible powers 220 million+ accessibility interactions every month — robust, scalable infrastructure behind a simple WordPress experience. The free version installs in seconds and adds a fully customizable accessibility widget — letting every visitor control content, color, orientation, and design. Premium plans unlock AllAccessible AI: human-in-the-loop agentic remediation that checks your pages against WCAG success criteria, drafts suggested fixes, and applies them only after your approval. No black-box overlay. You stay in control. Why AllAccessible is different Native WordPress UI — accessibility scores in the editor, in your page list, and in the admin bar. Not just a frontend widget. Agentic AI remediation, human-approved — AI suggests fixes; your team approves. Nothing changes your site without sign-off. Unlimited AI interactions — descriptive alt text and agentic fix proposals for every image and accessibility issue on paid plans. Free plans include a 10 alt-text + 5 fix preview so you can feel the value before upgrading. Real audits, real scores — per-page and site-wide scoring against WCAG success criteria, not a badge with nothing behind it. Scan any page on demand — trigger a fresh accessibility check from the editor or admin bar. Proven at scale 5+ years building accessibility tooling for the web Thousands of websites running AllAccessible today 220 million+ accessibility interactions every month across the sites we serve Boost your website’s accessibility with AllAccessible’s extensive features: Accessibility Standards AllAccessible helps you work toward the accessibility guidelines referenced by major standards, including: • ADA (Americans with Disabilities Act) • WCAG 2.0, 2.1, & 2.2 (Level AA/AAA) • Section 508 (U.S. Federal Standard) • European Accessibility Act (EAA EN 301 549) • Ontario AODA & Canada ACA • UK Equality Act • Australian DDA • California Unruh Act AllAccessible improves and monitors your site’s accessibility against these guidelines. How fully any standard applies depends on your content, so AllAccessible is a tool to help you get there — not a guarantee of legal outcomes. ♿ Accessibility Widget ♿ Empower all visitors to personalize their browsing experience on your website, with our dynamic Accessibility Widget that includes: Content Control Features Design Control Features Orientation Control Features AllAccessible Premium: Unlock a New Dimension in Accessibility The AllAccessible Premium subscription unleashes a plethora of additional features to optimize your website for individuals with disabilities, such as visual impairment, hearing loss, or mobility difficulties. AllAccessible’s checks follow WCAG, Section 508, and ADA guidelines and accessibility best practices. With AllAccessible Premium, you amplify your website’s accessibility, enhance your brand image, extend your outreach, and foster innovation. Benefit from a user-friendly interface that allows swift plugin configuration to meet your unique needs. Experience AllAccessible Premium with a risk-free 7-day trial, no credit card required. Our service is available at just $10/mo. Non-Profit organizations are eligible to apply for a free license here: https://www.allaccessible.org/get-allaccessible-for-free/ Unveil enhanced capabilities with AllAccessible Premium: ♿ Enhanced Accessibility Widget ♿ Online Dictionary Preset User Profiles Text to Speech Accessibility Statement Page Link Tree Accessibility Accommodation Requests ✦ Agentic AI Remediation ✦ AllAccessible Premium includes AllAccessible AI — agentic AI that continuously scans your website for accessibility gaps and auto-suggests non-invasive fixes. Your team reviews and approves each suggestion through a remediation manifest. Human-in-the-loop, every step. AllAccessible agents handle the heavy lifting: Auto-suggest missing image alt text descriptions (unlimited on every paid plan) Validate Page Structure and Role definitions Validate and correct Link Names Generate ARIA Labels for screen reader optimization Surface a prioritized fix list right inside your WordPress dashboard ✅ Accessibility Scans and Reports ✅ Run unlimited accessibility scans and receive a corresponding report. AllAccessible Premium’s Accessibility reports provide comprehensive and categorized details including: A Summary of the issues and highlighting the code where any issues occurred The severity of any issues, including best practices The Mapping of Accessibility Issues to WCAG, Section 508, ADA, and ACT rules 📊 Remediation and Administrative Dashboards 📊 Our user-friendly dashboard interfaces allow you to make quick and easy adjustments to agent-generated content, and user requests, no coding required! The Administrative dashboards give you complete control over your site allowing you to add users, add sites and subdomains, address accommodation requests, and adjust your application settings. ℹ️ Knowledge Base ℹ️ Complete product documentation, instructional videos are available to all users. For product documentation visit our Knowledge Base For informational videos and tutorials, visit our YouTube Channel 🆘 Dedicated Support 🆘 AllAccessible provides dedicated support, to help answer any questions you may have. 🤝 Partner Program 🤝 AllAccessible offers a profitable, flexible, and simple partner program to help digital agencies build their own branded solutions powered by AllAccessible. These solutions provide your clients with competitive accessibility solutions while generating new sources of revenue for you! Partners can leverage AllAccessible’s technology to create differentiated services across a wide range of website accessibility use cases such as: White Label and Resell Implementation & Configuration Accommodation as a Service Remediation Services And More! Partners receive additional benefits including: A free AllAccessible License for their website Discounted Licensing Costs A listing on our partner directory Access to our partner portal with free resources such as SOWs and marketing material to help drive revenue Apply to be a partner here Support For Plugin Support, visit the AllAccessible Support Page AllAccessible Terms and Conditions AllAccessible Would Love Your Feedback Our goal is to simplify content management between both platforms. Please share any feedback using the AllAccessible Feedback Form. Privacy & External Services AllAccessible is a connected service plugin. To deliver accessibility scanning, agentic AI remediation, and the accessibility widget, the plugin communicates with AllAccessible’s servers. This section discloses what data is sent and where, per WordPress.org guidelines. What the plugin connects to AllAccessible API (app.allaccessible.org) — validates your license, retrieves widget settings, serves accessibility audit scores, and accepts manual edits (alt text, fix approvals). Requests are authenticated and only made when you use the plugin’s admin screens or when the widget loads on your site. Data sent License & account identification — your AllAccessible account ID and site URL, so the service knows which account a request belongs to. Accessibility audit data — when the widget scans a page, detected accessibility issues are sent so the service can compute scores and generate remediation suggestions. Error & diagnostic information — if the plugin encounters an error, anonymized diagnostic details (error message, plugin version, WordPress/PHP version, your account ID) are sent to our error-monitoring service (Sentry) so we can detect and fix problems. This is disclosed in our Privacy Policy and can be disabled under Account → Advanced → “Disable error reporting to AllAccessible.” No data is sent without an account The free accessibility widget runs entirely in the visitor’s browser and adjusts their viewing experience only. License-bound features (AI remediation, scanning, image descriptions) require an AllAccessible account; creating one means agreeing to our Terms and Privacy Policy, which govern all data handling. Legal Terms & Conditions: https://www.allaccessible.org/terms-conditions Privacy Policy: https://www.allaccessible.org/privacy-policy GDPR: https://www.allaccessible.org/gdpr Trust Center: https://www.allaccessible.org/trust-center