HEDEF Hosting

Hedef Image Optimizer — WebP & AVIF is a lightweight but powerful image optimization plugin that converts your JPEG and PNG uploads into modern WebP and AVIF formats.
All conversions happen locally on your server using GD and/or Imagick – there is no external API, no remote storage and no extra monthly bills.
The plugin is developed and maintained by <a href="https://hedefhosting.com.tr/" rel="nofollow ugc">Hedef Hosting</a> and is provided completely free of charge. 
If you have ideas, bug reports or feature requests, feel free to email us at support@hedefhosting.com.tr.
It focuses on three main goals:
<ul>
<li>Better performance – Serve lighter images without visibly losing quality.</li>
<li>Modern formats – Use WebP and AVIF when supported by your server and your visitors’ browsers.</li>
<li>Simple control – Configure everything from a single, polished settings page.</li>
</ul>
<h3>Key Features</h3>
<ul>
<li>Automatically convert JPEG/JPG and PNG images to WebP and/or AVIF on upload.</li>
<li>Bulk optimization tool for existing Media Library images, with:
<ul>
<li>Progress bar and live log of processed items.</li>
<li>“Run again” support to refresh images after changing quality or resize settings.</li>
</ul>
</li>
<li>Media Library “Optimizer” column:
<ul>
<li>See per-image status, new filesize, and percentage of space saved.</li>
<li>One-click Re-optimize and Restore original actions (if you keep originals).</li>
</ul>
</li>
<li>Per-image controls in the attachment edit screen:
<ul>
<li>Optimize/Re-optimize just that image.</li>
<li>Override the global “Optimize on upload” setting.</li>
</ul>
</li>
<li>Server capabilities checker for GD / Imagick WebP and AVIF support.</li>
<li>Optional frontend integration using tags with WebP/AVIF elements:
<ul>
<li>Modern browsers get AVIF/WebP.</li>
<li>Older browsers fall back to the original image.</li>
</ul>
</li>
<li>Adjustable compression quality (0–100) with recommended ranges.</li>
<li>Optional resize of next-gen copies above a configurable max width (e.g. 2048px).</li>
<li>Optional EXIF/IPTC metadata stripping from next-gen copies to further reduce filesize.</li>
<li>Exclusion rules:
<ul>
<li>Skip specific images based on filename or path (e.g. logo, /icons/, avatar-).</li>
</ul>
</li>
<li>Works with:
<ul>
<li>WordPress Media Library</li>
<li>wp_get_attachment_image()</li>
<li>Featured images and most themes/page builders.</li>
</ul>
</li>
<li>Localization:
<ul>
<li>English (en_US)</li>
<li>Turkish (tr_TR) – full translation of the admin UI and bulk screens.</li>
</ul>
</li>
</ul>
Everything is designed to blend nicely into the WordPress admin with a clean, modern UI.
<h3>How It Works</h3>
<ol>
<li>When you upload a JPEG or PNG image, the plugin can automatically generate .webp and/or .avif versions (depending on your settings and server capabilities).</li>
<li>For existing images, use the Media → Bulk Optimize (NGIO) screen to scan the Media Library and generate missing next-gen versions in small batches.</li>
<li>On the frontend, you can enable the integration so that supported browsers will load AVIF / WebP, while older browsers still get the original image.</li>
<li>The plugin stores lightweight stats in attachment metadata (ngio) so you can see how much space you’ve saved on each image and across the library.</li>
</ol>
<h3>Requirements</h3>
<ul>
<li>PHP 8.1 or higher (for AVIF support through GD or Imagick).</li>
<li>WordPress 6.5 or higher.</li>
<li>One of:
<ul>
<li>PHP GD extension compiled with WebP/AVIF support.</li>
<li>PHP Imagick extension with WEBP/AVIF codecs enabled.</li>
</ul>
</li>
</ul>
If your server is missing some of these, the Server support box on the settings page will clearly show what’s available and what is not.
<h3>Usage</h3>
<h3>1. Choose formats and automation</h3>
On the Settings → Image Optimizer page:
<ul>
<li>Enable WebP, AVIF, or both, depending on your server capabilities.</li>
<li>Turn on Optimize on upload if you want new images to be processed automatically.</li>
<li>Enable Serve via to send WebP/AVIF to compatible browsers.</li>
</ul>
You can also:
<ul>
<li>Pick a quality level (e.g. 80–85 for most sites).</li>
<li>Enable Resize next-gen copies and set a max width (e.g. 2048px).</li>
<li>Enable Strip metadata to remove EXIF/IPTC from generated copies.</li>
<li>Add Exclusion patterns (one per line) to skip specific images.</li>
</ul>
<h3>2. Bulk optimization</h3>
Go to Media → Bulk Optimize (NGIO):
<ul>
<li>Click Optimize all images to start the process.</li>
<li>The progress bar will move as images are processed.</li>
<li>The log will list each optimized attachment.</li>
<li>If you change quality or resize settings later, you can run bulk optimization again – existing next-gen copies will be refreshed.</li>
</ul>
<h3>3. Per-image controls</h3>
In Media → Library (list view):
<ul>
<li>Use the Optimizer column to see:
<ul>
<li>Status (optimized/not optimized).</li>
<li>New filesize and percentage of space saved.</li>
<li>Links to Re-optimize and Restore original.</li>
</ul>
</li>
</ul>
In the attachment edit screen:
<ul>
<li>Use the NextGen optimization metabox to:
<ul>
<li>Optimize/re-optimize just that image.</li>
<li>Override the global “Optimize on upload” behaviour.</li>
</ul>
</li>
</ul>
<h3>License</h3>
Hedef Image Optimizer — WebP & AVIF is free software released under the GNU General Public License v2.0 or later. 
You can redistribute it and/or modify it under the terms of the GPL as published by the Free Software Foundation. 
See https://www.gnu.org/licenses/gpl-2.0.html for the full license text.

Hedef Image Optimizer — WebP & AVIF

Converts JPEG and PNG to modern WebP and AVIF formats, with bulk optimization and smart delivery.

Kraken.io

⚡ Compress, resize and convert your WordPress images to WebP, AVIF and more — automatically. Faster pages, smaller files, same quality.
Slow pages cost you visitors, search rankings and sales — and over-sized images are almost always the culprit. Kraken.io Image Optimizer fixes that on autopilot: it compresses, resizes and converts every image you upload — and every thumbnail WordPress generates — so your whole site loads lighter and faster, without you lifting a finger.
Every upload is sent to <a href="https://kraken.io" title="Kraken.io Image Optimizer" rel="nofollow ugc">Kraken.io</a>, one of the most advanced image-optimization APIs on the web, optimized in the cloud, and pulled straight back into your Media Library. No binaries, no command line, no server tweaks — install it, add your API key, and stop worrying about heavy images.
At its heart is Kraken.io’s intelligent lossy engine: for every single image it finds the exact point where the file is as small as possible while staying visually indistinguishable from the original. Expect to cut 60% or more off your image weight — exactly the win Google PageSpeed and Core Web Vitals reward.
From a personal blog to a busy WooCommerce store with tens of thousands of products, it’s an install-and-forget solution that just works.
<h4>✨ Why Kraken.io</h4>
<ul>
<li>Intelligent lossy & lossless — pick maximum savings with no visible quality loss, or pixel-perfect lossless. Per-image JPEG quality and chroma subsampling control for power users.</li>
<li>Convert between formats — turn uploads into WebP, AVIF, JPEG, PNG or GIF. Reach for next-gen WebP or AVIF for the biggest savings (and to clear Google’s “Serve images in next-gen formats” audit), or switch between the classics — whatever fits your site.</li>
<li>Optimizes everything WordPress serves — the full-size image and every thumbnail size (thumbnail, medium, large, …) that actually reaches your visitors through responsive <code>srcset</code>.</li>
<li>PDFs too, not just images — PDF files in your Media Library are compressed through the same Kraken.io engine, so documents download and embed faster.</li>
<li>Smart resizing — cap oversized uploads to a maximum width/height; resized images are enhanced to stay sharp and avoid haloing.</li>
<li>Bulk “Krak ’em all” — optimize your entire existing library from a dedicated Bulk Optimize screen or the Media Library bulk action, with live progress.</li>
<li>A control panel that tells you everything — a Kraken.io summary panel on the Media Library, Add Media and Plugins screens (plus a Dashboard widget) shows your connection status, plan, quota usage, active settings and supported formats at a glance.</li>
<li>Per-image savings & error badges — see exactly how much each image saved, right in the Media grid and list.</li>
<li>Plays nice with your stack — works with multisite, page builders, CDNs and local/dev sites. Detects other optimizer plugins and offers one-click deactivation so they don’t fight over your images.</li>
</ul>
<h4>🖼️ Supported formats</h4>
JPEG, PNG, animated GIF, WebP, AVIF, HEIC/HEIF and PDF. (For security, raw SVG upload is intentionally not enabled — see the FAQ.)
<h4>⚡ Built for Core Web Vitals</h4>
Heavy images are the number-one cause of slow pages. By compressing every size, converting to WebP/AVIF and right-sizing oversized uploads, Kraken.io directly targets the audits that move your score: Properly size images, Efficiently encode images, Serve images in next-gen formats and Largest Contentful Paint.
<h4>🎛️ Your images, your control</h4>
<ul>
<li>Choose intelligent lossy or lossless, globally.</li>
<li>Convert uploads to WebP/AVIF/JPEG/PNG/GIF on the fly — synced live between the panel and settings.</li>
<li>Preserve selected EXIF tags (Date, Copyright, Geotag, Orientation, Profile) or strip them for the smallest files.</li>
<li>Auto-orient photos from phones and cameras by their EXIF orientation.</li>
<li>Decide who can optimize — all logged-in users, authors and up, or administrators only.</li>
<li>Pick exactly which image sizes to optimize (the large 1536×1536 and 2048×2048 retina sizes are off by default to save quota — turn them on if your theme serves them).</li>
<li>Optimize on upload automatically, or defer and bulk-optimize later.</li>
</ul>
<h4>🔒 Private & secure by design</h4>
Your API credentials are stored write-only and masked — they are never pre-filled into the page or exposed in your site’s source, so other users on the dashboard can’t read them. Every action is protected by nonces and capability checks, uploads are content-verified, and all optimization happens server-to-server with Kraken.io. No secrets ever reach the browser.
<h4>🚀 Get started for free</h4>
<blockquote>
Create a <a href="https://kraken.io/pricing" title="Kraken.io – Plans and Pricing" rel="nofollow ugc">free Kraken.io account</a> — no credit card required — and get testing quota to try the plugin and the rest of the Kraken.io toolset:
<ul>
<li>A fully-featured optimization API with official libraries for PHP, Node.js, Python, Ruby, Java, Go and .NET</li>
<li>Web Interface (free) and Web Interface PRO with resizing and sync-to-Dropbox</li>
<li>URL Paster and Page Cruncher to optimize images in bulk from anywhere on the web</li>
<li>Optimization history and stats, and Kraken.io Cloud Storage</li>
</ul>
</blockquote>
You can use a single API key across as many sites as you like — there is no per-site license.
<blockquote>
★★★★★ Excellent option for image optimization 
 “The real power of Kraken is their ‘intelligent lossy’ optimization. I use it on all my sites and have never once needed to roll back an image because of too much quality degradation. It is a perfect solution as is.” — <a href="https://profiles.wordpress.org/collinmbarrett" rel="nofollow ugc">collin</a>
★★★★★ Quality results, quality service 
 “The plugin works really well and effortlessly, and the support is prompt, thoughtful, and thorough. I’m hooked.” — <a href="https://profiles.wordpress.org/illustrata" rel="nofollow ugc">illustrata</a>
★★★★★ Optimize according to Google PageSpeed 
 “Kraken was instrumental in optimizing images to comply with Google’s PageSpeed analyzing tool. Our travel blog now sports Google’s ‘mobile friendly’ tag for mobile searches.” — <a href="https://profiles.wordpress.org/qualterio" rel="nofollow ugc">Walter Schaerer</a>
★★★★★ Perfect solution to speed up site! 
 “I love this plugin! All my questions are quickly responded to and I see a huge saving in image size without losing quality. Highly recommend!” — <a href="https://profiles.wordpress.org/ezone69" rel="nofollow ugc">ezone69</a>
</blockquote>
<h4>Connect with Kraken.io</h4>
<ul>
<li>Website: <a href="https://kraken.io" rel="nofollow ugc">https://kraken.io</a></li>
<li>Plans & pricing: <a href="https://kraken.io/pricing" rel="nofollow ugc">https://kraken.io/pricing</a></li>
<li><a href="https://twitter.com/KrakenIO" title="@KrakenIO" rel="nofollow ugc">Twitter / X</a> · <a href="https://www.facebook.com/krakenio" title="Kraken.io" rel="nofollow ugc">Facebook</a> · <a href="https://github.com/kraken-io" title="Kraken.io on GitHub" rel="nofollow ugc">GitHub</a></li>
</ul>

Kraken.io Image Optimizer – Compress, Convert to WebP & AVIF, Resize & Bulk Optimize

- It works with 1 image but not at Google PageSpeed standard
- It doesn't work with bulk action
- The worst thing is I inputted my credit card there and they refused to let me cancel my subscription, what a very bad thing from kraken.io

Does not work for bulk actions, subscription cannot be cancelled

As others are noting here, their customer service is terrible. In fact I'd use the word "non-existent".

After signing up with an account I decided that the service was no longer what I needed and contacted them to delete my account. Multiple times, in different ways, I've contacted their customer support about this and never had a response. Currently breaching GDPR rules, they're going to be reported.

Thank goodness I never handed over any payments to them.

Terrible Customer Service

Optimize images automatically — compress, resize and convert to WebP, AVIF & more with Kraken.io. Faster pages, smaller files, same quality.

Hedef Image Optimizer — WebP & AVIF vs Kraken.io Image Optimizer – Compress, Convert to WebP & AVIF, Resize & Bulk Optimize