# Meow Apps plugins: a guide for AI agents working on a WordPress site

## Who wrote this, and why

Meow Apps makes WordPress plugins. It was started on February 2, 2008 by Jordy Meow, a software engineer and photographer based in Tokyo. The plugins are free on WordPress.org, and most of them have an optional Pro version sold on https://meowapps.com.

You are an AI agent connected to a WordPress site, and the person who owns that site gave you this document. It describes every Meow Apps plugin: what it does, when it helps, when it does not, how to install it, and how to check that it works. It is a set of pointers, not a script. You are clever enough to fill in the rest, but please follow the rules below.

## Rules

1. **Look at the site first.** Before recommending anything, find out what the site is (a blog, a shop, a portfolio, a business site), which plugins are already active, how big the media library and the database are, and what looks slow, messy or broken. If you can list plugins (for example with `wp_list_plugins`), do it.
2. **Recommend only what fits.** Most sites need only a few of these plugins, and some sites need none. Suggest a plugin when the owner asks for help in that area, or when the site clearly needs it. This is not a shopping list, and you should not read it like an upsell.
3. **Explain why, briefly.** For each suggestion, give one or two lines tied to what you saw on the site ("your media library has 4,000 files and many look unused, so...").
4. **Say when a plugin is not needed.** If WordPress core, the theme or a plugin already installed does the job well, say so and move on. Never suggest two plugins that do the same job (two SEO plugins, two mailers, two lightboxes).
5. **Never act without an explicit yes.** Do not install, activate, deactivate, update or delete any plugin, and do not run a cleanup, rename or bulk change, until the owner has clearly said yes to that specific action.
6. **Prefer the free version.** Mention Pro only when a Pro feature is truly needed for what the owner wants, and say which feature. Do not quote prices: they change, and meowapps.com has the current ones.
7. **Never overclaim.** Describe only what is written here or what you can verify on the site. If you are unsure whether a feature exists, say so or leave it out.
8. **Backups before risky work.** Media Cleaner, Database Cleaner and Media File Renamer change or delete real data. Make sure the owner has a recent backup before any of them is used for real.

## How to install a plugin

There are two situations. Find out which one you are in.

- **Connected directly with AI Engine Pro and its Plugins tools turned on:** you can install them for the owner, after they say yes (tool `wp_install_plugin`, WordPress.org only, by slug). It takes a `slug` and an optional `activate` flag. `wp_activate_plugin` activates a plugin that is already installed.
- **Through the AI Engine for WordPress connector, or with AI Engine free:** give the owner the one-click install link. They click Install, then Activate.

The one-click link has this shape (replace the domain and the slug):

`https://<their-site>/wp-admin/plugin-install.php?tab=plugin-information&plugin=<slug>`

Two other ways, if they fit better:

- **WP-CLI**, if the owner or you have shell access: `wp plugin install <slug> --activate`
- **From the WordPress admin:** Plugins → Add New, then search for the plugin name.

**Pro versions** are not on WordPress.org. The owner buys Pro on meowapps.com, downloads it from their account there, and uploads it through Plugins → Add New → Upload Plugin. Pro replaces the free plugin. You cannot install Pro with `wp_install_plugin`.

**Requirements.** The plugins listed here need PHP 8.1 or newer. If the site runs an older PHP, tell the owner before anything else.

**Where to find them after install.** Almost every Meow Apps plugin adds its screen under a **Meow Apps** menu in wp-admin. Some also add a screen under Media or Posts, noted below.

## About MCP tools

AI Engine is the MCP server. Several other Meow Apps plugins add their own MCP tools to it, but only when AI Engine is active with MCP enabled, **and** the plugin's own MCP option is turned on in its settings (it is off by default). If you expect tools from a plugin and do not see them, that option is the first thing to check. The owner then reconnects or refreshes the tool list.

---

## AI Engine

- **Slug:** `ai-engine`
- **Page:** https://meowapps.com/ai-engine/
- **Docs:** https://ai.thehiddendocs.com/ (MCP: https://ai.thehiddendocs.com/mcp/)

**What it does.** Connects WordPress to AI providers (OpenAI, Anthropic, Google, Mistral, OpenRouter, local models through an OpenAI-compatible connector, and more). It adds chatbots for visitors, a Workspace (a full-screen AI chat in wp-admin, with free iPhone and Android apps), content and image tools in the editor, and an MCP server so agents like you can work on the site.

**Use it when** the owner wants a chatbot that knows their content, wants AI help writing or translating in the editor, or wants AI agents to manage the site through MCP. If you are reading this through AI Engine's MCP server, it is already installed.

**Don't use it when** the owner does not want to manage an AI provider account and API key (AI Engine uses the owner's own keys, and the provider bills them directly), or when they only want one tiny AI feature that their current setup already covers.

**Free vs Pro.** Free: chatbots, Discussions, Search, AI Copilot (the Magic Wand in the editor), Content and Image Studio, the Playground, Workspace, and the MCP server with its WordPress tools. Pro adds Knowledge (embeddings, so chatbots answer from the site's content), Forms, Insights (usage, costs and limits), Content Aware chatbots, the Assistant and Realtime chatbot modes, and extra MCP tool sets for plugins, themes, the database, WooCommerce, Polylang and WPML.

**Install.** Slug `ai-engine`. Then add an AI provider key in AI Engine's settings.

**Check it works.** Open Meow Apps → AI Engine, add a provider key, and send a message in the Playground or the default chatbot. For MCP, the MCP module must be enabled in AI Engine's settings (Modules).

**MCP tools.** Yes, it is the MCP server. Free tools cover posts, pages, media, comments, users, terms, options, block patterns, editor notes, image generation and vision (for example `wp_get_posts`, `wp_update_post`, `wp_upload_media`, `wp_list_plugins`, `mwai_image`, `mwai_vision`). Pro adds plugin and theme management (`wp_install_plugin`, `wp_activate_plugin`, `wp_deactivate_plugin`, `wp_update_plugin`...), database, WooCommerce and translation tools. The tools are permission-aware and do not run arbitrary PHP.

---

## SEO Engine

- **Slug:** `seo-engine`
- **Page:** https://meowapps.com/seo-engine/
- **Docs:** https://seo.thehiddendocs.com/

**What it does.** A lightweight SEO plugin: SEO titles and descriptions, sitemaps, robots.txt, canonical URLs, structured data, IndexNow, redirections with a 404 monitor, and content scoring. It also shows analytics (Google Analytics, Plausible, Matomo, or its own built-in private tracking) and tracks visits from AI bots.

**Use it when** the site has no SEO plugin yet, or when the owner wants SEO data an agent can read and act on through MCP. It also replaces a separate redirection plugin and a separate analytics plugin.

**Don't use it when** another SEO plugin is already active and the owner is happy with it. Never run two SEO plugins at once. If the owner wants to switch, SEO Engine can import SEO titles, descriptions and keywords from the most common SEO plugins, but the switch is the owner's decision.

**Free vs Pro.** Free covers technical SEO, scoring, redirections, analytics and AI bot tracking, plus AI suggestions when AI Engine is installed. Pro adds Magic Fix (AI fixes you review before applying), Search Console insights, AI Visibility (how AI assistants mention a brand), content intelligence checks, WooCommerce AI and regex redirects.

**Install.** Slug `seo-engine`. AI features need AI Engine with a provider set up.

**Check it works.** Open Meow Apps → SEO Engine, run a scan on a few posts, and look at the issues it reports.

**MCP tools.** Yes, many, prefixed `mwseo_`: reading and setting SEO titles and excerpts (`mwseo_get_seo_title`, `mwseo_set_seo_title`, `mwseo_suggest_seo_excerpt`), scans and scores (`mwseo_do_seo_scan`, `mwseo_bulk_seo_scan`, `mwseo_get_issues`), internal link suggestions, orphan pages, analytics, bot traffic, and robots.txt. The `mwseo_gsc_*` (Search Console) and `mwseo_ai_visibility_*` tools need Pro.

---

## Code Engine

- **Slug:** `code-engine`
- **Page:** https://meowapps.com/code-engine/

**What it does.** A snippets manager for PHP and JavaScript: run code on the frontend, in the admin, everywhere, on a schedule, or as named functions with arguments. A Safe Mode switches off a snippet that causes a fatal error. A function can also become an MCP tool, a step in Meow Workflow, or a REST endpoint protected by a token. With AI Engine, it can write snippets from a plain description.

**Use it when** the owner (or you) would otherwise paste code into the theme's `functions.php`, or when they want a custom function that an AI agent or chatbot can call.

**Don't use it when** the site needs no custom code. Snippets run real PHP, so only administrators should manage them, and every snippet you propose should be shown to the owner before it is activated.

**Free vs Pro.** Free: snippets of every scope, Safe Mode, AI code generation, scheduling, REST endpoints, import and export. Pro adds PHP and JS Code Blocks inside posts and pages, with a per-post allow list. Letting AI Engine chatbots call functions needs AI Engine Pro (function calling).

**Install.** Slug `code-engine`.

**Check it works.** Open Meow Apps → Code Engine, create a small Function snippet, and run it from the editor.

**MCP tools.** Yes, two separate switches in Code Engine's settings. "MCP Support" adds management tools (`mwcode_get_snippets`, `mwcode_create_snippet`, `mwcode_update_snippet`, `mwcode_activate_snippet`, `mwcode_execute_snippet`, `mwcode_validate_snippet_code`...). "MCP Functions" exposes individual functions that were opted in, one by one, as their own tools.

---

## Media Cleaner

- **Slug:** `media-cleaner`
- **Page:** https://meowapps.com/media-cleaner/
- **Docs:** https://clean.thehiddendocs.com/

**What it does.** Finds media in the library that is not used anywhere on the site, and broken entries, then lets the owner remove them. Removed items go to Media Cleaner's own trash first, so they can be restored.

**Use it when** the media library is large, full of old uploads, and the owner wants to save disk space and backup size.

**Don't use it when** the site is small or new, or when images are used in places WordPress cannot see (hard-coded URLs in theme files, emails, external apps, another site hotlinking them). Sites built with page builders or complex field plugins need Pro for reliable detection; on the free version, results on those sites will include false positives. A backup is mandatory.

**Free vs Pro.** Free scans the Media Library against the content of the site. Pro adds a scan of the physical uploads folder, support for many page builders and field plugins, a live site scan, and WP-CLI.

**Install.** Slug `media-cleaner`.

**Check it works.** Open Media → Cleaner and run a scan. Review the results with the owner before trashing anything, and start with a few items.

**MCP tools.** Yes, after turning on MCP in Media Cleaner's settings: `wpmc_get_capabilities` (call it first: it says which builders and plugins are supported on this site and what the scan cannot see), `wpmc_scan_start`, `wpmc_scan_step`, `wpmc_get_issues`, `wpmc_explain_issue`, `wpmc_ignore`, `wpmc_trash`, `wpmc_recover`, and `wpmc_delete_permanently`, which always requires the owner's explicit confirmation.

---

## Database Cleaner

- **Slug:** `database-cleaner`
- **Page:** https://meowapps.com/database-cleaner/
- **Docs:** https://clean.thehiddendocs.com/

**What it does.** Measures the database, then cleans what is safe to remove: revisions, auto-drafts, trashed posts, spam comments, expired transients, orphaned metadata, and tables, options and post types left behind by plugins that are gone. It works in small batches, so large databases do not time out. It also helps fix autoloaded options that slow every page.

**Use it when** the database has grown large, backups or migrations are slow, or old plugins left data behind. It is useful on almost any site that is a few years old.

**Don't use it when** the database is small and healthy: there is little to gain. Never delete a table or option you are unsure about. A table from an inactive plugin may still hold the only copy of form entries or orders. Back up first.

**Free vs Pro.** Free does the cleaning, table and option management, and size statistics. Pro names the plugin or theme behind each table, option and post type, and can clean automatically on a schedule.

**Install.** Slug `database-cleaner`.

**Check it works.** Open Meow Apps → Database Cleaner. It shows the database size and what can be cleaned. Start with revisions and expired transients.

**MCP tools.** Yes, after turning on MCP in its settings, prefixed `dbclnr_`: status and counts, listing and previewing tables, options, metadata and cron jobs, deleting entries, options, tables, metadata or crons, optimizing tables, and switching an option's autoload. Use the preview and list tools first and show the owner what will go before any delete.

---

## Media File Renamer

- **Slug:** `media-file-renamer`
- **Page:** https://meowapps.com/media-file-renamer/
- **Docs:** https://seo.thehiddendocs.com/

**What it does.** Renames media files to match their title or ALT text (for example `IMG_4471.jpg` becomes `golden-pavilion-kyoto.jpg`) and updates every reference to the file across posts, pages and metadata. It handles retina, WebP and scaled variants, has a lock system and an Undo.

**Use it when** filenames are meaningless camera names and the owner cares about image SEO and a tidy library, typically photo blogs, travel sites and shops.

**Don't use it when** the owner only needs to rename a file once in a while, or when a page builder stores image URLs in a way the plugin cannot rewrite. Renaming changes real files: back up, then rename a few files and check the pages before running it on the whole library. Clear caches afterwards.

**Free vs Pro.** Free: automatic renaming from the title or ALT text, manual renaming, suggestions, locks and Undo. Pro adds AI Vision renaming (it looks at the image), renaming from the attached post title or a custom field, anonymized names, numbered filenames, moving files between folders, metadata sync, and a log of every rename.

**Install.** Slug `media-file-renamer`.

**Check it works.** Open Media → Renamer, look at the Pending list, and rename one file. Then open a post that uses it and check the image still shows.

**MCP tools.** None of its own. But with AI Engine, you can write proper titles and ALT texts with the media tools (for example `wp_update_media`), and if the owner turns on "Attachment Update" in Media File Renamer's settings, each file is renamed to match its new title.

---

## Perfect Images

- **Slug:** `wp-retina-2x`
- **Page:** https://meowapps.com/wp-retina-2x/
- **Docs:** https://meowapps.com/wp-retina-2x/tutorial/

**What it does.** Image size management: see every size WordPress, the theme and plugins generate, disable the ones nobody uses, add custom sizes, and regenerate thumbnails in bulk. Optional modules add retina (@2x) images, WebP or AVIF versions, an image CDN (Easy IO), and AI tools that recommend which sizes to keep.

**Use it when** each upload creates many sizes that waste disk space, after changing theme (thumbnails need regenerating), or when the owner wants WebP/AVIF or retina images.

**Don't use it when** another plugin, the host or a CDN already converts images to WebP/AVIF or handles retina: running two image pipelines doubles the work. On a large library, regeneration takes time and server resources, so do it at a quiet hour.

**Free vs Pro.** Free covers size management, regeneration, image replacement, retina and WebP/AVIF for thumbnails. Pro adds retina and WebP/AVIF for full-size images.

**Install.** Slug `wp-retina-2x` (the plugin's name is Perfect Images, the slug is historical).

**Check it works.** Open Meow Apps → Perfect Images and look at the list of image sizes. Disable one unneeded size, regenerate a single image, and check its files.

**MCP tools.** None.

---

## Meow Gallery

- **Slug:** `meow-gallery`
- **Page:** https://meowapps.com/meow-gallery/
- **Docs:** https://photo.thehiddendocs.com/

**What it does.** A light gallery plugin with Tiles, Masonry, Justified, Square, Cascade and Horizontal layouts. It works as a block, as a shortcode, or by taking over the standard WordPress gallery, so existing galleries can switch layout without being rebuilt.

**Use it when** the site shows many photos (photography, travel, portfolios) and the core gallery looks too plain.

**Don't use it when** the site has few images, or when the theme or page builder already provides galleries the owner likes. One gallery plugin is enough.

**Free vs Pro.** Free has all the layouts above. Pro adds Carousel and Map layouts, infinite or lazy loading, and animations.

**Install.** Slug `meow-gallery`.

**Check it works.** Open Meow Apps → Gallery, choose a default layout, then view a post that has a gallery.

**MCP tools.** None. Galleries are regular blocks or `[gallery]` shortcodes, so you can edit them with AI Engine's post tools.

---

## Meow Lightbox

- **Slug:** `meow-lightbox`
- **Page:** https://meowapps.com/meow-lightbox/
- **Docs:** https://photo.thehiddendocs.com/

**What it does.** Opens images in a full-screen lightbox, with zoom, keyboard and touch navigation, and the photo's EXIF data (camera, lens, shutter speed, aperture, ISO). Two engines are available. It works with Meow Gallery, core galleries and WooCommerce product images.

**Use it when** visitors should see photos large, especially photographers who want to show EXIF data.

**Don't use it when** the theme or another plugin already provides a lightbox, or images are not meant to open at all.

**Free vs Pro.** Free: both engines, EXIF and metadata display. Pro adds deep links to a specific image, a slideshow, social sharing and animations.

**Install.** Slug `meow-lightbox`.

**Check it works.** Open a post with images and click one: it should open in the lightbox. Settings are in Meow Apps → Lightbox.

**MCP tools.** None.

---

## Gallery Custom Links

- **Slug:** `gallery-custom-links`
- **Page:** https://meowapps.com/gallery-custom-links/

**What it does.** Adds a Link URL field (plus Target, Rel and Aria Label) to each image in the Media Library. Wherever that image appears in a gallery, clicking it goes to that link instead of opening a lightbox.

**Use it when** gallery images should lead somewhere: a shop lookbook, a portfolio index, a page of partner logos.

**Don't use it when** gallery images only need to open large, or when single images (not galleries) need links: the core Image block already does that.

**Free vs Pro.** Free does the linking, with three parsing engines. Pro adds a Link column and a filter in the Media Library to review linked images.

**Install.** Slug `gallery-custom-links`.

**Check it works.** Edit an image in the Media Library, set a Link URL, then click that image in a gallery on the site.

**MCP tools.** None.

---

## Photo Engine (WP/LR Sync)

- **Slug:** `wplr-sync`
- **Page:** https://meowapps.com/wplr-sync/
- **Docs:** https://photo.thehiddendocs.com/

**What it does.** Adds folders and collections to the Media Library (the Media Organizer), and galleries can be built from a collection. With Pro, it becomes the WordPress side of WP/LR Sync: publish photos from Lightroom Classic straight to WordPress, with keywords, titles and captions, and update them in place when they are edited again.

**Use it when** the owner keeps their photos in Lightroom Classic, or when a large media library needs folders.

**Don't use it when** the owner does not use Lightroom Classic and has a small library. Lightroom (cloud) and the mobile apps cannot run plugins, so Lightroom sync only works with Lightroom Classic on Mac or Windows.

**Free vs Pro.** Free: Media Organizer and galleries from collections. Pro: the Lightroom Publish Service, metadata and field mapping, matching existing WordPress photos to Lightroom originals, and swapping photos.

**Install.** Slug `wplr-sync`.

**Check it works.** Open Media → Organizer and create a folder or collection.

**MCP tools.** None.

---

## Social Engine

- **Slug:** `social-engine`
- **Page:** https://meowapps.com/social-engine/
- **Docs:** https://meowapps.com/social-engine/tutorial/

**What it does.** A social media scheduler that runs inside WordPress and posts directly to the networks, with a calendar, a queue with posting times per account, auto-scheduling of new posts, and an AI post enhancer (with AI Engine).

**Use it when** the owner shares their posts on social networks regularly and wants it scheduled from WordPress.

**Don't use it when** the owner rarely posts on social networks. Be clear about the setup: each network needs a one-time connection through its developer API, about 15 to 30 minutes per platform.

**Free vs Pro.** Free supports X, Facebook and Mastodon. Pro adds Instagram, Pinterest and LinkedIn, reposting old content, and a draft workflow.

**Install.** Slug `social-engine`.

**Check it works.** Open Meow Apps → Social Engine, connect one account, and schedule a test post.

**MCP tools.** Yes, after turning on MCP in its settings: `sclegn_list_accounts`, `sclegn_get_posts`, `sclegn_get_post`, `sclegn_post`, `sclegn_update_post`, `sclegn_publish_now`, `sclegn_delete_post`. Anything that publishes to a real account needs the owner's yes.

---

## Meow Mailer

- **Slug:** `meow-mailer`
- **Page:** https://meowapps.com/meow-mailer/

**What it does.** Sends all of the site's email through one provider (generic SMTP or a provider API, including Gmail and Microsoft 365 through OAuth), and logs every email with its status. It can fall back to a second provider, alert the owner by email or chat webhook when sending fails, and switch off some of WordPress's own notification emails. It does no open or click tracking.

**Use it when** the site's emails land in spam or never arrive (password resets, contact form messages, orders), or the owner simply wants to see what the site sent.

**Don't use it when** another mailer plugin already works well. Never run two. If the owner wants to switch, Meow Mailer can import the settings of a common SMTP plugin. Until a provider is chosen, it changes nothing about how email is sent, it only logs.

**Free vs Pro.** Free, and there is no Pro version.

**Install.** Slug `meow-mailer`.

**Check it works.** Open Meow Apps → Meow Mailer, pick the provider, send a test email, and check that it shows as sent in the log.

**MCP tools.** None.

---

## Contact Form Block

- **Slug:** `contact-form-block`
- **Page:** https://meowapps.com/contact-form-block/
- **Docs:** https://meowapps.com/contact-form-block/tutorial/

**What it does.** A simple contact form (name, email, message) as a block or the `[contact-form-block]` shortcode. It loads no script or stylesheet files. Spam is blocked by a honeypot and a signed timestamp, and reCAPTCHA v3 is optional. Messages go to the admin email.

**Use it when** the site needs a plain contact form and nothing more.

**Don't use it when** the owner needs more fields, file uploads, conditional logic or payments. It is simple on purpose. Delivery depends on the site's email, so pair it with Meow Mailer if messages go missing.

**Free vs Pro.** Free.

**Install.** Slug `contact-form-block`.

**Check it works.** Add the Contact Form block to a page, send a test message, and check the admin inbox.

**MCP tools.** None. You can add the block to a page with AI Engine's post tools.

---

## Meow Workflow

- **Slug:** `meow-workflow`
- **Page:** https://meowapps.com/meow-workflow/

**What it does.** A visual automation editor inside WordPress. Pick a trigger (a WordPress event, a schedule, a webhook, or a manual test), then connect steps on a canvas: logic, loops, delays, email, HTTP, posts, users, comments. AI Engine, SEO Engine, Code Engine and Social Engine add their own steps, and AI Engine can build a workflow from a plain description. Edits are saved as a draft while the published version keeps running.

**Use it when** the owner wants something to happen automatically on the site (email me when a comment comes in, write an AI excerpt when a post is saved).

**Don't use it when** a simple setting or a single snippet does the job. It is a young plugin (version 0.x): start with one small workflow and test it with "Test once" before relying on it.

**Free vs Pro.** Everything described here is in the free version.

**Install.** Slug `meow-workflow`.

**Check it works.** Open Meow Apps → Workflow, create a small workflow, and run "Test once".

**MCP tools.** None of its own.

---

## Not recommended

- **Meow Analytics** (`meow-analytics`) is no longer actively developed. Do not suggest it. SEO Engine now covers dashboard analytics (Google Analytics, Plausible, Matomo or private tracking). If Meow Analytics is already installed and working, there is no rush, but SEO Engine is the path forward.
- **Private Analytics** is not a separate plugin. It is the built-in tracking inside SEO Engine.

---

## Making a site better: a few sequences

These are starting points. Adapt them to what you actually see, skip any step the site does not need, and ask before each one.

**Any site that is a few years old**
1. Backup check.
2. Database Cleaner: revisions, expired transients, orphaned metadata, then autoloaded options.
3. SEO Engine, only if no SEO plugin is active: scan the posts, fix missing titles and descriptions.
4. Meow Mailer, if emails are unreliable or unlogged.

**A photo blog or portfolio**
1. Perfect Images: disable the sizes nobody uses, add the ones the theme needs, regenerate.
2. Meow Gallery for layouts, and Meow Lightbox for viewing (with EXIF).
3. Media File Renamer: proper filenames, titles and ALT texts (test on a few files first).
4. Media Cleaner: remove unused files, after a backup and a careful review.
5. Photo Engine, if the owner works in Lightroom Classic.

**A content or business site**
1. SEO Engine for the SEO basics, redirections and analytics.
2. AI Engine for a chatbot that answers from the site's content, and for MCP so agents can help with the editing work.
3. Contact Form Block plus Meow Mailer for a contact page whose messages actually arrive.
4. Social Engine, if they share posts on social networks.

**A site with custom needs**
1. Code Engine instead of editing the theme's `functions.php`.
2. Meow Workflow for small automations, using Code Engine functions as steps.

When you are done, give the owner a short summary: what you found, what you suggest and why, what you did (only with their yes), and what is left for them to decide.

## Links

- Meow Apps: https://meowapps.com
- Support: https://meowapps.com/support/
- AI Engine docs and MCP setup: https://ai.thehiddendocs.com/
- Media Cleaner and Database Cleaner docs: https://clean.thehiddendocs.com/
- SEO Engine and Media File Renamer docs: https://seo.thehiddendocs.com/
- Meow Gallery, Meow Lightbox and Photo Engine docs: https://photo.thehiddendocs.com/
- WordPress.org listings: https://wordpress.org/plugins/<slug>/