NerdCow

Make your website faster than ever with TIO’s smart optimization.
Upload your images like you’ve always done before, and we’ll handle the rest. The Image Optimizer compresses your image and converts it to a modern file format. The result is the lightest image possible, without losing the quality.
Why choose our plugin?
The Image Optimizer uses smart optimization parameters tuned specifically for website images. It’s designed to be a simple companion that gives you the perfect image every time. We decide on the perfect balance of size and quality for your uploaded image. TIO automatically converts your new uploads to the best format (including modern formats like WebP and AVIF), applies lossless conversion or uses lossy compression settings that don’t affect the quality.
It’s perfect for small marketing teams who don’t have the time and know-how to optimise images manually and busy agencies who can’t afford the time to do it manually at scale.
We developed TIO to solve our own frustration with image optimizers. As a result, we were able to achieve results up to 35% file size reduction compared to other compressors. Going the extra mile helps ticking off the Google PageSpeed insights image checks, especially those for next-gen image formats.
How it works?
You upload your images as you normally do — one by one or in bulk, either way is fine. You can do it via the WordPress media library and by uploading directly into your pages.
We categorise what’s in the image to apply the right optimization settings. We use suitable compression and file format conversion, as well as remove unnecessary metadata.
As an example, screenshot compression makes sure to not sacrifice text sharpness, while plain illustrations with low colour depth use more aggressive compression since it won’t affect the quality nearly as much.
We optimise the source file, so WordPress thumbnails come pre-optimised as well.
Supported file formats
The only excluded file format is GIF. We support all other file formats that WordPress allows, including HEIC.
Try it for free
TIO allows you to generate one license key with 50 free image credits per website. That’s enough to test a few core pages and measure the impact.
<ol>
<li>Get a free license key at <a href="https://theimageoptimizer.com/key" rel="nofollow ugc">theimageoptimizer.com/key</a></li>
<li>Paste the key in Settings > TIO Image Optimizer</li>
<li>Upload images as usual — they are compressed automatically</li>
</ol>
Credit restoration for peace of mind
Uploaded an image by mistake or we didn’t optimise it to your liking? You can reclaim the credit straight from the WordPress Media Library, subject to our <a href="https://theimageoptimizer.com/terms" rel="nofollow ugc">Terms</a>.
And if we notice that your image was already optimal, we won’t charge a credit in the first place — nothing to reclaim there!
External Service Disclosure
This plugin relies on The Image Optimizer API, a third-party service hosted at <code>api.theimageoptimizer.com</code>, to compress images. When you upload an image with auto-compress enabled, the plugin sends the image file and your site URL to this API. The API returns a compressed version of the image, which replaces the original in your media library.
No data is collected or stored beyond what is needed to process the compression request and manage your credit balance.
<ul>
<li>Service website: <a href="https://theimageoptimizer.com" rel="nofollow ugc">theimageoptimizer.com</a></li>
<li>Terms of Service: <a href="https://theimageoptimizer.com/terms" rel="nofollow ugc">theimageoptimizer.com/terms</a></li>
<li>Privacy Policy: <a href="https://theimageoptimizer.com/privacy" rel="nofollow ugc">theimageoptimizer.com/privacy</a></li>
</ul>

TIO – The Image Optimizer – Smart Image Compression & Optimization, Built for the Web

Automatically compress and convert your images to modern formats (WebP, AVIF). Get a perfectly optimized image every time and speed up your website.

Darko G.

MegaOptim

MegaOptim 2.0 is a WordPress image optimization plugin built for sites that want to optimize images and move older JPG, PNG, and GIF libraries to next-gen formats like WebP and AVIF. You can convert images, compress originals, optimize supported next-gen images, process the Media Library or server folders in bulk, and deliver the best available format automatically on the front end.
If your goal is to convert JPEG to WebP, convert PNG to WebP, generate AVIF versions for better performance, optimize existing WebP and AVIF assets, or use smart compression instead of fixed local compression, MegaOptim 2.0 is designed around that workflow. Next-gen format generation is a major focus of this release, but 2.0 is not limited to conversion only.
<h4>Why Use MegaOptim?</h4>
<ul>
<li>Optimize supported JPEG, PNG, GIF, WebP, and AVIF images</li>
<li>Convert JPEG, PNG, and GIF images to WebP and AVIF</li>
<li>Bulk process the WordPress Media Library</li>
<li>Browse and process folders outside the Media Library</li>
<li>Use fixed local compression or smart MegaOptim Cloud compression</li>
<li>Automatically convert or compress newly uploaded images</li>
<li>Serve WebP and AVIF with Apache <code>.htaccess</code> or PHP passthru</li>
<li>Track background jobs with a built-in queue monitor</li>
<li>Restore compressed originals from backup or remove generated next-gen files</li>
<li>Optionally process retina images generated by WP Retina 2x / Perfect Images</li>
<li>Use WP-CLI for bulk conversion, stats, reset, logs, and queue tools</li>
</ul>
<h4>Conversion-First Workflow</h4>
MegaOptim 2.0 keeps your original uploads in place and generates next-gen derivatives alongside them. That means you can convert older JPG, PNG, and GIF images to WebP or AVIF without replacing the original source file. On the front end, MegaOptim can serve the best format supported by the visitor’s browser while keeping the original file available as a fallback.
<h4>Local vs Cloud Processing</h4>
MegaOptim works without an API key. If your server has GD or Imagick support, you can do local processing for WebP conversion, local AVIF generation when your server supports it, and basic local compression for JPEG and PNG images. Local compression is useful when you want a simple, fixed local workflow on your own server.
If you add a MegaOptim API key, MegaOptim Cloud can offload processing from your server and is the recommended option for smart compression, original-format compression, direct WebP and AVIF optimization, and broader AVIF workflows. This is the better path when you want smarter results than fixed local compression. The cloud plan is available for just $49 per year and can be used on unlimited sites. You can get an API key from <a href="https://app.megaoptim.com/" rel="noopener noreferrer nofollow ugc">the MegaOptim dashboard</a> and see plans at <a href="https://megaoptim.com/pricing/" rel="noopener noreferrer nofollow ugc">MegaOptim pricing</a>.
<h4>What MegaOptim 2.0 Can Do</h4>
<ul>
<li>Convert mode: Generate WebP or AVIF versions from JPEG, PNG, and GIF images</li>
<li>Compress mode: Optimize original images with fixed local compression or smart cloud compression, and optionally generate next-gen formats during compression</li>
<li>Next-gen optimization: Optimize existing WebP and AVIF images through the cloud compression workflow</li>
<li>Media Library view: Process individual images, selected images, or run bulk jobs across the library</li>
<li>File System view: Browse folders on your server and bulk-convert images outside the Media Library</li>
<li>Upload automation: Automatically convert or compress new uploads in the background</li>
<li>Delivery settings: Choose Apache <code>.htaccess</code> rules or PHP passthru rewriting to serve WebP and AVIF</li>
<li>Queue monitor: Watch active jobs, progress, failures, and background processing state</li>
<li>Tools page: Run restore actions for compressed originals or remove generated WebP/AVIF derivatives</li>
<li>Restore support: Restore compressed images from backup and regenerate thumbnails</li>
<li>Logging and diagnostics: Use the built-in log viewer and queue statistics through WP-CLI</li>
<li>Retina support: Optionally process <code>@2x</code> images created by WP Retina 2x or Perfect Images</li>
</ul>
<h4>Migration From Older MegaOptim Versions</h4>
MegaOptim 2.0 includes background migration for legacy settings and older attachment data. Existing users can upgrade and let MegaOptim migrate data in batches, with progress shown inside the admin UI while migration is running.

MegaOptim Image Optimizer – Optimize Images, Compress Images, Convert to WebP & AVIF

Optimize JPEG, PNG, GIF, WebP, and AVIF images with smart cloud compression or local processing, convert old JPG, PNG, and GIF uploads to modern WebP  …

TIO – The Image Optimizer – Smart Image Compression & Optimization, Built for the Web vs MegaOptim Image Optimizer – Optimize Images, Compress Images, Convert to WebP & AVIF