Presswell

benplum

Presswell Alt Text Generator helps teams reduce accessibility backlog by generating descriptive alt text for new and existing images. Connect a provider, choose a model, and run generation workflows directly inside wp-admin.
Features
<ul>
<li>Supports OpenAI, Anthropic Claude, and Google Gemini multimodal models</li>
<li>Generates alt text for individual images in the Media Library and media modal</li>
<li>Processes missing-alt backlogs in batches with a dedicated bulk queue</li>
<li>Handles provider rate limits with automatic cooldown locks</li>
<li>Adds a Media Library column with quick generate/regenerate actions</li>
<li>Provides a customizable prompt seed for output consistency</li>
</ul>
Media Library Tools
Inline actions let you generate or regenerate alt text directly from each image row. When an image has no alt text, the column displays a “Generate Alt Text” link that triggers the AJAX workflow and replaces itself with the result.
Bulk Generator
The Bulk page counts images missing alt text, allows regeneration preferences, and runs batches while surfacing progress, failures, and rate-limit pauses.
<h4>Documentation</h4>
Filters
<ul>
<li><code>pwatg_available_services</code> — Modify the available AI providers</li>
<li><code>pwatg_available_models</code> — Modify the available models for each provider</li>
<li><code>pwatg_provider_registry</code> — Map provider slugs to custom service classes</li>
</ul>
WP-CLI
If WP-CLI is available, you can run single-image generation, bulk generation, and missing-alt counts from the command line:
<ul>
<li><code>wp pwatg generate <attachment-id></code></li>
<li><code>wp pwatg bulk-generate</code></li>
<li><code>wp pwatg count-missing</code></li>
<li><code>wp pwatg network-bulk-generate</code></li>
</ul>
Optional CLI flags:
<ul>
<li><code>wp pwatg generate <attachment-id> --force</code></li>
<li><code>wp pwatg bulk-generate --force</code></li>
<li><code>wp pwatg bulk-generate --limit=<int></code></li>
<li><code>wp pwatg bulk-generate --missing-only</code></li>
<li><code>wp pwatg network-bulk-generate --force</code></li>
<li><code>wp pwatg network-bulk-generate --limit=<int></code></li>
<li><code>wp pwatg network-bulk-generate --missing-only</code></li>
<li><code>wp pwatg network-bulk-generate --sites=<id,id,...></code></li>
</ul>
<h3>Privacy</h3>
This plugin sends image-derived payloads to the AI provider you choose when generating alt text (OpenAI, Anthropic, or Google Gemini). API keys are stored in WordPress options on your site and used only for outbound provider requests initiated by your server.
<h3>External Services</h3>
This plugin connects to external AI services only when you use alt text generation features or test provider connectivity. Only the provider selected in plugin settings is contacted for a given request. This plugin sends the follow data:
<ul>
<li>API key (in Authorization header)</li>
<li>Selected model name</li>
<li>Prompt text (including your prompt seed and filename context)
<ul>
<li>For alt-text generation: image MIME type and image binary content encoded as base64</li>
<li>For Test Connection: a short text prompt (“Reply with: OK”)</li>
</ul>
</li>
</ul>
<h4>OpenAI API</h4>
<ul>
<li>Terms: https://openai.com/policies/terms-of-use</li>
<li>Privacy: https://openai.com/policies/privacy-policy</li>
</ul>
<h4>Anthropic API</h4>
<ul>
<li>Terms: https://www.anthropic.com/legal/commercial-terms</li>
<li>Privacy: https://www.anthropic.com/privacy</li>
</ul>
<h4>Google Gemini API</h4>
<ul>
<li>Terms: https://ai.google.dev/terms</li>
<li>Privacy: https://policies.google.com/privacy</li>
</ul>

Presswell Alt Text Generator

Generate accessible image alt text in WordPress with OpenAI, Anthropic, and Google Gemini.

Erdinc Bulat

Erdo Image Optimizer is a complete Image SEO & Performance Suite for WordPress. Convert images to WebP/AVIF, bulk-fix alt text, sanitize filenames, enable lazy loading, clean up unused media, and run a 6-point SEO audit — all from a single, modern dashboard.
Most image optimization plugins stop at compression. Erdo goes further: every image in your media library receives a professional SEO health score (out of 6 points). You will know exactly which images are hurting your Google rankings and how to fix them, in bulk, in minutes.
<h4>Why Erdo Image Optimizer?</h4>
<ul>
<li>Image SEO Audit (6 Points): Every image gets a score from 0 to 6 based on alt text, filename quality, title, contextual relevance, dimensions, and format. Fix failing criteria with one click — no guesswork.</li>
<li>WebP & AVIF Converter: One-click conversion from JPEG, PNG, GIF, and HEIC/HEIF to WebP or AVIF. Smart Quality mode automatically finds the smallest file size that still looks great.</li>
<li>Bulk Alt Text Generation: Automatically generate descriptive alt text from filenames for every image missing it. Fix hundreds of images in seconds — critical for accessibility and image SEO.</li>
<li>Filename Sanitizer: Transforms messy uploads like <code>IMG_1234 (copy).JPG</code> into SEO-friendly <code>professional-web-design.webp</code> at upload time. Bulk-rename existing images with automatic database reference updates.</li>
<li>Unused Media Cleanup: Scans your entire library to find images that appear nowhere on your site. Free up disk space and stop confusing search crawlers with orphaned files.</li>
<li>Lazy Loading & WebP Serving: Inject <code>loading="lazy"</code> into content images automatically. Serve WebP to compatible browsers via <code>.htaccess</code> rewrite (Apache) or PHP <code><picture></code> fallback (all servers).</li>
<li>Background Queue & WP-CLI: Bulk-convert thousands of images via WP-Cron — close the browser tab and let it run. Full CLI support: <code>wp erdo convert</code>, <code>audit</code>, <code>restore</code>, <code>stats</code>, <code>clean-cache</code>.</li>
<li>BunnyCDN & REST API: Upload converted images directly to BunnyCDN storage. Headless access via <code>/wp-json/erdo/v1/stats</code> and <code>/wp-json/erdo/v1/audit</code> REST endpoints.</li>
</ul>
<h4>Full Feature List</h4>
Compression & Conversion
<ul>
<li>One-click WebP and AVIF conversion with original backup and one-click restore</li>
<li>HEIC/HEIF (iPhone photos) conversion to WebP/AVIF via Imagick</li>
<li>Smart Quality mode — automatically finds the smallest file size that still looks great</li>
<li>Lossless mode for zero-quality-loss compression</li>
<li>Max Upload Width — automatically resize oversized images before conversion</li>
<li>EXIF metadata stripper — reduce file weight and protect photographer privacy</li>
<li>GIF, JPEG, PNG, HEIC → WebP/AVIF in one click</li>
</ul>
Image SEO & Alt Text
<ul>
<li>Image SEO Auditor with 6-point health score for every image in your library</li>
<li>Bulk Alt Text — generate alt text from filenames for all images missing it</li>
<li>Automatic filename sanitization on upload (removes spaces, special chars, uppercase)</li>
<li>Bulk rename all existing filenames with automatic database reference update</li>
<li>SEO Audit CSV export — download a full spreadsheet for reporting</li>
<li>Missing Alt Text filter — focus the dashboard on images that need fixing</li>
</ul>
Performance & Delivery
<ul>
<li>Lazy loading (<code>loading="lazy"</code>) injected into content, thumbnails, and gallery images</li>
<li>WebP serving via <code>.htaccess</code> rewrite (Apache) or PHP <code><picture></code> element rewriter</li>
<li>BunnyCDN integration — upload converted images directly to CDN storage</li>
<li>Background Queue — bulk convert via WP-Cron, browser tab can be closed</li>
</ul>
Developer & Dashboard
<ul>
<li>REST API: <code>/wp-json/erdo/v1/stats</code> and <code>/wp-json/erdo/v1/audit</code> endpoints</li>
<li>WP-CLI commands: <code>wp erdo convert</code>, <code>audit</code>, <code>restore</code>, <code>stats</code>, <code>clean-cache</code></li>
<li>Dashboard widget — key stats visible from wp-admin home</li>
<li>Before/After comparison slider — drag to compare original vs optimized</li>
<li>Right-click context menu on every image card</li>
<li>Grid size selector (Small / Medium / Large) with localStorage persistence</li>
<li>SVG upload support with automatic XSS sanitization for administrators</li>
<li>Multisite / network admin support</li>
<li>Modern, clean dashboard with format badge and SEO score on every card</li>
</ul>

Erdo Image Optimizer: Compress & Convert to WebP/AVIF (SEO Audit, Alt Text, Lazy Load)


Expected another "compress and done" plugin and got a complete image SEO toolkit instead. The standout for me is the 6-point audit score on every image. It tells you exactly which ones have weak alt text, bad filenames or the wrong format, and you fix them in bulk instead of one at a time. The WebP/AVIF conversion handles HEIC from iPhone photos too, and it keeps your originals with one-click restore, so there's basically no risk in trying it.



What sold me as a developer was the depth under the hood. Full WP-CLI support (wp erdo convert/audit/restore), real REST endpoints, a background queue so big libraries keep converting after you close the tab, and clean i18n. That's an unusual amount of care for a free plugin, and it's clearly built to WordPress standards, proper nonces, capability checks and escaping throughout.



Runs smoothly, does what it promises, and no upsell nagging. Highly recommended, and I'm looking forward to where this one goes.


More than a compressor a real image SEO suite


Not just another compressor - the 6-point SEO audit on every image and bulk alt text generation alone save hours of work. WebP/AVIF conversion with automatic original backup makes experimenting risk-free, and the WP-CLI commands and REST API endpoints show this was built by a developer for developers. Highly recommended.


Finally an image plugin that takes SEO seriously

Compress & convert images to WebP/AVIF. SEO-audit every image, bulk-fix alt text, filenames & unused media. Lazy loading & BunnyCDN.

Presswell Alt Text Generator vs Erdo Image Optimizer: Compress & Convert to WebP/AVIF (SEO Audit, Alt Text, Lazy Load)