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Free Plugin by Mehdi Rezaei v2.3.2

Thumbnail Manager

Safely analyze, preview, trash, restore, schedule, regenerate, and manage WordPress thumbnails from a clean tabbed admin screen.

Thumbnail Manager

The facts

Active installs
100+
Price
Free
Last updated
5 Jul 2026
Added
Sep 2024
Requires WP
5.0
Tested up to
WP 7.0.4
Requires PHP
7.4
Downloads
2,496

Our analysis

AI-assisted

Thumbnail Manager is a WordPress plugin designed to enhance media maintenance workflows. It allows you to preview cleanup results, manage thumbnails safely with a Trash feature, and create backups before deletion. The plugin is suitable for site owners, developers, and agencies looking to manage thumbnail bloat without risking data loss.

It offers features like batch processing, unused media detection, and detailed analytics for image sizes. The tabbed admin interface organizes various functions, including cleanup, optimization, and reporting, making it user-friendly for managing large media libraries.

Best for: This plugin suits site owners and developers who need to manage and optimize media libraries effectively.

What it does well

  • Preview cleanup results before file removal
  • Batch processing with visible progress
  • Trash and Restore workflow for safer deletion
  • Detailed analytics for image sizes
  • Custom Size Manager for managing image dimensions

Where it falls short

  • Limited information on the plugin's rating
  • No details on specific compatibility beyond WordPress 7.0.4

Verdict

Thumbnail Manager provides a comprehensive solution for managing thumbnails in WordPress. Its features cater well to those looking to maintain their media libraries efficiently.

From the developer

Mehdi Rezaei's own description of Thumbnail Manager, lightly tidied.

Thumbnail Manager is a safer and more complete media-maintenance workflow for WordPress.

Instead of deleting thumbnails blindly, the plugin now helps you:

  • Preview cleanup results before removing files
  • Work from focused WordPress-style tabs for Analysis, Sizes, Cleanup, Optimize, Backup, Reports, and Pro previews
  • Move thumbnails to plugin Trash instead of deleting permanently
  • Create a zip backup of the exact matching thumbnails before moving them to Trash
  • Restore trashed thumbnails later if needed
  • Process large libraries in batches with visible progress
  • Detect orphan thumbnails left behind on disk
  • Detect probably unused media items across post content, featured images, and common builder data
  • Regenerate missing image sizes in batches
  • Review per-size analytics including file counts, storage usage, missing sizes, and orphan counts
  • Review recent activity logs and reporting summaries for cleanup, restore, backup, and regeneration workflows
  • Disable selected image sizes for future uploads
  • Create zip backups for all uploads or a specific year/month folder
  • Schedule recurring cleanup runs with configurable frequency, size scope, and folder scope

This release is built for site owners, developers, agencies, and anyone trying to reduce thumbnail bloat without risking accidental data loss.

Features

  • Dry run / preview before cleanup
  • WordPress-style tabbed admin screen with persistent support and ad sidebar
  • Trash and Restore workflow for safer deletion
  • Optional zip backup before moving matching thumbnails to Trash
  • Batch processing with real progress for scan, cleanup, and regeneration
  • Unused media detection
  • Orphan thumbnail detection
  • Regenerate missing sizes
  • Per-size analytics dashboard
  • Reporting and recent activity logs
  • Advanced filters for image format, usage status, and orphan-only cleanup
  • WebP variant generation for JPEG and PNG uploads
  • Media Library thumbnail summary column with per-image quick actions
  • Custom image size manager with visual previews
  • Bulk image optimization with TinyPNG-compatible API support
  • Size usage analysis based on content and stored meta references
  • Image size disable controls for future uploads
  • Media backup export to zip
  • Scheduled cleanup powered by WP-Cron

Custom Size Manager

Create, update, and remove custom image sizes directly from the plugin screen. The manager includes a simple visual preview so you can sanity-check new dimensions before you save them for future uploads.

Tabbed Admin Screen

The Thumbnail Manager screen is organized into focused tabs for Analysis, Sizes, Cleanup, Optimize, Backup, Reports, and Pro previews. The support and ad sidebar remains visible while moving between tabs.

External Services

The free version of Thumbnail Manager displays a Google AdSense support ad in its WordPress admin screen sidebar.

The admin screen loads Google’s AdSense script from https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js with the publisher client ca-pub-9076174896803444 and ad slot 9828772606. Google may process ad requests, impressions, browser data, cookies, and related signals according to its own policies.

Google AdSense is provided by Google LLC.

Terms: https://policies.google.com/terms
Privacy Policy: https://policies.google.com/privacy
AdSense policies: https://support.google.com/adsense/answer/48182

Read the full description on the official page →

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