CaphLabs

Keep Originals Safe, convert JPEG/PNG images to WebP and makes WebP the canonical file. WP returns <code>.webp</code> URLs, Keeping originals safely archived.
<h3>How it works (high level)</h3>
<ol>
<li>
Convert
<ul>
<li>For a JPG/PNG attachment, the plugin generates a WebP for the full image and all WordPress-generated sizes.</li>
<li>Conversion is done through WordPress’ image editor system (WP_Image_Editor), meaning it uses GD or Imagick (whichever your server supports) with WebP support enabled.</li>
</ul>
</li>
<li>
Move originals
<ul>
<li>The original JPG/PNG files are moved to:
<ul>
<li><code>wp-content/uploads/_originals/...</code></li>
</ul>
</li>
<li>The folder structure mirrors your uploads structure.</li>
</ul>
</li>
<li>
Update WordPress to serve WebP
<ul>
<li>Attachment “file” + metadata are updated so WordPress serves <code>.webp</code> as the attachment file.</li>
<li>Attachment mime type is updated to <code>image/webp</code>.</li>
</ul>
</li>
<li>
Optional: Replace old URLs everywhere
<ul>
<li>If enabled, the plugin can replace old <code>.jpg/.png</code> URLs across:
<ul>
<li>post content</li>
<li>postmeta</li>
</ul>
</li>
<li>Replacement is serialized-safe (does not break serialized arrays).</li>
</ul>
</li>
</ol>
<h3>Background jobs (keeps running after page reload)</h3>
Conversion/repair/sweep jobs are designed to run in the background. They keep ticking even if you refresh the page or close the tab.
The plugin uses multiple loopback methods (admin-post / REST / public tick fallback) so it can keep working even on restrictive hosting setups.
<h3>Log + “it looks frozen” note</h3>
A rolling “terminal style” log is written to: 
– <code>wp-content/uploads/hsbc-webp-only/logs/webp-only.log</code>
If the log appears to freeze in the admin page: 
– click Refresh Log, or 
– refresh the page
The job may still be running server-side; refreshing the log/page usually catches up.
<h3>Usage</h3>
Go to Media → WebP Only.
<h3>Settings</h3>
<ul>
<li>Quality
<ul>
<li>WebP quality for conversion (0–100).</li>
</ul>
</li>
<li>Batch size
<ul>
<li>How many items to process per tick. Smaller batches reduce server load.</li>
</ul>
</li>
<li>Replace old .jpg/.png URLs across content + postmeta (serialized-safe)
<ul>
<li>Recommended if your site content contains hard-coded image URLs.</li>
</ul>
</li>
<li>Sweep Include / Exclude
<ul>
<li>Used by the Sweep tools to control which folders are scanned.</li>
</ul>
</li>
</ul>
<h3>Conversion Jobs (buttons)</h3>
Start Bulk Convert 
– Converts Media Library attachments (JPG/PNG) in batches. 
– Moves originals to <code>uploads/_originals/</code>. 
– Updates attachment metadata so WordPress serves <code>.webp</code>. 
– Optional URL replacement (content + postmeta).
Start Repair/Cleanup 
– Repairs inconsistencies if something was partially converted or moved. 
– Useful after restores/migrations or if some attachments have mismatched metadata. 
– Optional URL replacement.
Start Folder Sweep 
– Scans the filesystem for eligible images (based on your Sweep Include/Exclude rules). 
– Designed for sites with additional image folders beyond standard uploads. 
– Optional URL replacement.
Stop Job 
– Stops the currently running job.
<h3>Maintenance / Cleanup (buttons)</h3>
Delete duplicate _originals 
– Deletes backup files in <code>uploads/_originals/</code> *only when* an identical file already exists in <code>uploads/</code>. 
– This is a cleanup tool for situations where originals were restored back into uploads and you no longer need the archived duplicate.
Delete duplicate _webp 
– Removes orphaned WebP cache files in: 
 – <code>uploads/_webp/</code> 
– Only deletes WebP files that no longer match anything in <code>uploads/</code> or <code>uploads/_originals/</code>.
Delete duplicate sweep _originals 
– Maintenance cleanup for non-uploads roots (folders under <code>wp-content/</code>) that contain their own <code>_originals/</code> folders. 
– It uses your Sweep Include list to find those roots. 
– Only deletes a file from <code><root>/_originals/</code> when the same file exists at <code><root>/</code> AND the file size matches (safe duplicate).
Revert Everything 
– Restores original JPG/PNG files from <code>uploads/_originals/</code> back into <code>uploads/</code>. 
– Reverts attachment metadata so WordPress serves the originals again.
<h3>Log controls</h3>
Refresh Log 
– Pulls the latest log tail into the admin screen.
Reset Log 
– Clears the log file.
<h3>Requirements</h3>
<ul>
<li>WordPress’ image editor must support WebP.
<ul>
<li>GD with WebP support, or</li>
<li>Imagick with WebP support</li>
</ul>
</li>
<li>If WebP conversion is not supported on your server, conversion/repair/sweep will refuse to run (revert tools can still work).</li>
</ul>

OrigiSafe — Advanced Image Optimizer (WebP) — Keep Originals Safe

Convert JPG/PNG uploads (and existing library) to WebP, move originals to /uploads/_originals/, and update Media Library metadata - WP serves .webp

Imagify Image Optimizer

WP Rocket

Optimize images in 1‑click: compress, resize & convert to WebP/AVIF – free up to 20MB/month. Enjoy the easiest WordPress image optimizer to set up.
<h3>🏆 The Easiest Image Optimization Plugin For WordPress</h3>
<a href="https://imagify.io/" rel="nofollow ugc">Imagify</a> is the simplest image optimization plugin for WordPress to optimize images, so your website loads faster and images stay lighter. It’s designed for site owners who want quick and effective results with a very easy setup.
With Imagify, you can resize and compress images and convert them to WebP and AVIF directly from your WordPress dashboard, with up to 20MB of images optimized each month for free. Image optimization takes just one click and does not require technical knowledge.
Whether you are uploading new images or optimizing an existing media library, Imagify makes image optimization simple, reliable, and easy to manage.
What sets Imagify apart:
<ul>
<li>
WebP and AVIF conversion included in the free plan, so you can use next-gen image formats right away.
</li>
<li>
Easy to use, with no advanced configuration to learn.
</li>
<li>
Smart image compression that does the job for you and reduces file size while preserving image quality.
</li>
<li>
Bulk image optimization that runs in the background.
</li>
</ul>
Watch the video and see for yourself why Imagify is the easiest image optimizer to make your images lighter and save time:
<iframe loading="lazy" class="youtube-player" width="750" height="422" src="https://www.youtube.com/embed/qbqV5yEZ6Og?version=3&rel=1&showsearch=0&showinfo=1&iv_load_policy=1&fs=1&hl=en-US&autohide=2&wmode=transparent" allowfullscreen="true" style="border:0;" sandbox="allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox"></iframe>
<h3>✨ Optimize Images with Imagify – Features at glance:</h3>
<ul>
<li>
Smart Compression (Does the job for you) – Automatically balances image quality and performance. You don’t need to tweak settings. Imagify optimizes every image for the best compression rate while preserving visual quality, so you save time and get consistent results without having to choose any settings.
</li>
<li>
Lossless Compression (Optional) – Prefer pixel-perfect quality? Choose lossless compression. This option is ideal for photographers and quality-focused websites.
</li>
<li>
Next-Gen Formats: WebP and AVIF (In one click) – Convert your images to WebP for wide compatibility or AVIF for superior compression in one click. This helps improve your Google PageSpeed performance score and Core Web Vitals grades.
</li>
<li>
Resize Large Images Automatically – Resize oversized images to a maximum width of up to 2560 pixels on upload or during optimization. This can reduce file size by up to 80 percent while keeping images optimized on all devices.
</li>
<li>
Asynchronous Bulk Optimization – Optimize your entire Media Library in the background without slowing down your site. Bulk optimization runs asynchronously, so you can keep working while Imagify handles the image optimization process for you.
</li>
<li>
On-the-Fly Image Resizing – Resize images directly from the app or within WordPress. This makes it easy to optimize images at the ideal size right away.
</li>
<li>
Original Image Backup – Keep your original images stored in a separate folder before the optimization process. This makes it easy to restore them at any time.
</li>
<li>
Flexible File and Size Optimization – Choose which WordPress image sizes you want to optimize, including thumbnail, medium, large, 1536 px, and 2048 px. This helps you optimize only what you actually use and manage your monthly quota more efficiently.
</li>
<li>
Auto-Optimize on Upload – New images are optimized automatically as soon as you upload them to WordPress. No manual steps and no forgotten images.
</li>
</ul>
✨ In short, you have everything you need to optimize images at scale while keeping quality high and your setup simple.
<h3>💡 Why optimize images with Imagify?</h3>
Imagify is an image optimizer built by the same team behind WP Rocket and focuses on delivering the best performance while saving you time, whether you are new to image optimization or managing a large number of images across multiple websites.
Imagify helps you optimize images, convert them to WebP and AVIF, and easily improve performance, including PageSpeed scores and Core Web Vitals. You’ll make your images load quicker without spending time adjusting settings.
<h3>📸 Optimize and compress images easily</h3>
Imagify helps you optimize images by reducing their file size without losing image quality. Your pages load faster, without changing how your images look to your visitors.
You can compress and resize images as they are uploaded, or optimize existing images in your media library. Imagify supports common image formats, including PDFs.
If images are too large, you can set a maximum width. Oversized images are automatically resized during optimization, proportionally and without cropping.
The part you’ll love the most: Imagify uses Smart Compression to automatically choose the best balance between image quality and file size, so you get lighter images without visible quality loss or having to tweak settings yourself.
<h3>⚙️ Enjoy image Optimization in the background</h3>
If you have many images, bulk optimization lets you optimize them all at once. The process runs in the background, so you can keep working while Imagify optimizes images for you. Original images are always preserved and can be restored at any time.
<h3>🔄 Convert images to WebP and AVIF</h3>
In addition to resizing and compressing, with Imagify you can convert images to WebP and AVIF without upgrading, as next-gen image conversion is included in all plans, including the free one.)
You can choose whether to generate WebP images, AVIF images, or both from the Imagify settings. Once enabled, Imagify creates next-gen versions of your images.
To serve these image formats on your site, you simply enable the option to display images in WebP and AVIF. Imagify then delivers the best format supported by each visitor’s browser.
Image fallback is handled automatically. If a browser does not support WebP or AVIF, the optimized JPG or PNG version is served instead, ensuring full compatibility.
Imagify supports next-gen conversion for all common image formats, including JPG, JPEG, PNG, and GIF.
For instance, you can convert GIF to WebP, JPEG and JPG to WebP, and even PNGto WebP. The same goes for AVIF: you can convert GIF to AVIF, JPEG and JPG to AVIF, PNG to AVIF.
<h3>⚡ Boost your PageSpeed Insights score and optimize Core Web Vitals</h3>
Heavy images are one of the most common reasons pages load slowly. When images are too large or not served in modern formats, they drag down performance and user experience.
Imagify helps you fix this at the source by compressing images and converting them to the next-gen formats mentioned above, so pages load faster and feel smoother to visitors. Such image optimization tasks help your site meet Google’s performance recommendations, fix PageSpeed Insights audits such as <a href="https://imagify.io/blog/serve-next-gen-formats-wordpress/" rel="nofollow ugc">“Serve images in next-gen formats”</a>” and “<a href="https://imagify.io/blog/efficiently-encode-images-wordpress/" rel="nofollow ugc">“Efficiently encode images”</a>, and improve key metrics like Core Web Vitals.
With lighter images across your site, you get faster load times and better performance where it matters most and, piece on the cake, without having to fine-tune performance settings yourself!
<h3>💬 What Do Our Users Think Of Imagify?</h3>
Here’s what our users have to say about us after optimizing their images with Imagify:
<blockquote>
“Images and other media are the largest parts on your web pages (most likely). Therefore don’t forget to optimise images for the web before adding to your site. For WordPress there are many optimisation plugins available. My favourite is Imagify” — <a href="https://twitter.com/wpmark/status/1479128422395830273" rel="nofollow ugc">Mark Wilkinson</a>
”To give your images a slimming treatment, without altering them aesthetically, there is a great plugin on WordPress: Imagify. Simple, efficient and functional, it’s really worth a look.”— <a href="https://twitter.com/wpmarmite_en/status/1383072818649255937" rel="nofollow ugc">WP Marmite</a>
“Imagify is an awesome tool that is powerful & easy to use. It’s fast, rivals and surpasses other established plugins/software. Awesome!” — <a href="https://twitter.com/SRHDesign/status/663758140505235456" rel="nofollow ugc">Simon Harper</a>
“If you want to “squeeze” your images as much as possible and “trim out” your website on the highest professional level… Imagify” — <a href="https://twitter.com/Free_LanceTools/status/685503950909476865" rel="nofollow ugc">Ivica Delic</a>
“Clearly Imagify is the most awesome WordPress plugin to compress images on your website! A must try” — <a href="https://twitter.com/EricWaltR/status/679053496382038016" rel="nofollow ugc">Eric Walter</a>
</blockquote>
<h3>💰 Is Imagify Free?</h3>
You can optimize for free 20MB of images (that’s about 200 images) every month. You can also convert to the next-gen WebP format for free.
Need to compress more images? Have a look at our plans: <a href="https://imagify.io/pricing" rel="nofollow ugc">https://imagify.io/pricing</a>
<h3>💡 Want Image Optimization Tips?</h3>
If you want to optimize images and know more about using WebP images on WordPress, improving your PageSpeed score with Imagify, or compressing multiple images online, take a look at our blog: <a href="https://imagify.io/blog/" rel="nofollow ugc">https://imagify.io/blog/</a>
It’s packed with advice on image compression and so much more!
<ul>
<li><a href="https://imagify.io/blog/how-to-convert-images-to-webp/" rel="nofollow ugc">How to Convert Images to WebP on WordPress with Imagify</a></li>
<li><a href="https://imagify.io/blog/image-optimization-manual-for-wordpress/" rel="nofollow ugc">How to Optimize Images on WordPress for Performance and SEO</a></li>
<li><a href="https://imagify.io/blog/reduce-image-size-without-losing-quality/" rel="nofollow ugc">How to Reduce Image Size Without Losing Quality (and Save Space)</a></li>
<li><a href="https://imagify.io/blog/how-to-resize-compress-multiple-images-online/" rel="nofollow ugc">How to Resize and Compress Multiple Images Online (Easy Methods)</a></li>
<li><a href="https://imagify.io/blog/how-to-make-photos-load-faster-wordpress/" rel="nofollow ugc">How to Make Photos Load Faster on WordPress: 6 Key Tactics</a></li>
<li><a href="https://imagify.io/blog/optimize-images-page-speed-google/" rel="nofollow ugc">How to Optimize Images for Page Speed (and Google)</a></li>
</ul>
<h3>👥 Who Are We?</h3>
We are <a href="https://wp-media.me/" rel="nofollow ugc">WP Media</a>, the company behind WP Rocket, the best caching plugin for WordPress.
Our mission is to improve the web, we are making it faster with <a href="https://wp-rocket.me/" rel="nofollow ugc">WP Rocket</a> and lighter with Imagify.
<h3>✉️ Get In Touch!</h3>
<ul>
<li>Website: <a href="https://imagify.io" rel="nofollow ugc">Imagify.io</a></li>
<li>Contact Us: <a href="https://imagify.io/contact" rel="nofollow ugc">https://imagify.io/contact</a></li>
<li>Twitter: <a href="https://twitter.com/imagify" rel="nofollow ugc">https://twitter.com/imagify</a></li>
</ul>
<h3>🚀 Related Plugins</h3>
<ul>
<li><a href="https://wp-rocket.me/" rel="nofollow ugc">WP Rocket</a>: Best caching plugin to speed-up your WordPress website.</li>
<li><a href="https://wordpress.org/plugins/rocket-lazy-load/" rel="ugc">Lazy Load</a>: Best Lazy Load script to reduce the number of HTTP requests and improve the website’s loading time.</li>
</ul>
License: GPLv2 or later 
License URI: http://www.gnu.org/licenses/gpl-2.0.html

Imagify: Optimize Images for Top Speed (Compress & Convert to WebP/AVIF)


I am using this for quite a sometime now and must say that it gives me back good scores in Google Page Speed and Lighthouse.


Excellent Image Optimizer

Should be improved


Good UI but functionality does not work.All the time if you press optimize it showing loading and loading and optimizing and optimizing but its never end.


Does not work!

Super good


This is a great tool with an excellent support.


Great tool


Highly reccomend this plugin! easy and gets the job done


Excellent plugin


It's our favorite plugin to optimize images, works good and solves the problem. 


Top plugin to optimize images

I use it on all my projects

Optimize images in 1‑click: compress, resize & convert to WebP/AVIF - free up to 20MB/month. Enjoy the easiest WordPress image optimizer to set up.

OrigiSafe — Advanced Image Optimizer (WebP) — Keep Originals Safe vs Imagify: Optimize Images for Top Speed (Compress & Convert to WebP/AVIF)