Free
€0.00
Any number of sites
- All Free features
- Updates from WordPress.org
- WordPress.org support forum
GioCompress
Image optimization for WordPress.
GioCompress converts JPG and PNG uploads to WebP on your own server and optimizes the images already in your media library. The Pro add-on adds AVIF output, quality and resize controls, original file backups and an optimization report.
The problem
Images arrive heavier than they need to be.
Photos from a phone or exports from a design tool are often uploaded as large JPG or PNG files. WordPress keeps them as they are and builds every thumbnail from them.
Converting each file before uploading takes time, and the images already in the media library stay as they were.
What it does.
Each feature shows where you find it in GioCompress and whether it is part of the Free version or the Pro add-on.
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Free
Optimize on upload
JPG and PNG files are converted to WebP as they are uploaded, before WordPress creates the thumbnails. Every image size is generated from the optimized file.
Every upload to the media library
-
Free + Pro
Optimize existing images
RetroOptimize lists the JPG and PNG images that are not optimized yet. Convert a selection or the whole list: thumbnails are converted too, image URLs in your content are updated and old file URLs redirect to the new ones.
Free: 5 images per day. Pro: no daily limit.
GioCompress → RetroOptimize
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Free
Lazy loading
Adds loading="lazy" to images on your pages. The first images on the page and images marked as high priority are left as they are.
GioCompress → Settings → Enable Lazy Loading
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Free
Missing alt text
Fills empty alt attributes when a page is displayed, using the image alt, title, caption or description, then the post title or file name. Nothing is written to the database.
GioCompress → Settings → Generate Missing Alt Text
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Pro
AVIF output
Choose AVIF instead of WebP as the output format. Available when your server’s Imagick or GD build supports AVIF.
GioCompress → Settings → Output Format
-
Pro
Quality and maximum width
Set the compression quality from 1 to 100 and a maximum width in pixels for new images. The Free version uses a fixed quality of 95 and keeps the original dimensions.
GioCompress → Settings
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Pro
Keep original files
Keep the original JPG or PNG as a backup. In the Free version the original file is removed after conversion.
GioCompress → Settings → Preserve Original Images
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Pro
Optimization report
See the original size, optimized size and saved percentage of each file, with totals and charts. In the Free version this page shows sample data.
GioCompress → Report
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Pro
Orphaned data cleanup
Removes optimization records that point to attachments which no longer exist.
GioCompress → Settings → Orphaned Data Cleanup
GioCompress
See how it works.
GioCompress → RetroOptimize: select the JPG and PNG images to convert and follow the progress. Demo site with sample images, recorded in real time.
GioCompress → Settings with the Pro options: output format, compression quality, maximum width and original file backup.
Report (Pro): original, optimized and saved size for the whole library and for the current page. Figures from a test site.
Report (Pro): original size, optimized size and saved percentage per file.
Choose the features you need.
GioCompress is free on WordPress.org. The Pro add-on unlocks the features marked Pro and is licensed per site, billed yearly.
| Feature | Free | Pro |
|---|---|---|
| Convert JPG and PNG to WebP on upload | Included | Included |
| Optimize existing images (RetroOptimize) | 5 per day | No daily limit |
| Lazy loading | Included | Included |
| Missing alt text | Included | Included |
| AVIF output (server support required) | Not included | Included |
| Compression quality | Fixed at 95 | 1–100 |
| Maximum image width | Not included | Included |
| Original files | Removed after conversion | Keep or remove |
| Optimization report | Sample data | Your site’s data |
| Orphaned data cleanup | Not included | Included |
| Plugin updates | From WordPress.org | From giosuite.com while the license is active |
1 site Starter
€19.00/year
Billed yearly
- Pro license for 1 WordPress site
- All Pro features
- Standard email support
- Security and feature updates for 1 year
3 sites Pro
€39.00/year
Billed yearly
- Pro license for 3 WordPress sites
- All Pro features
- Priority email support
- Security and feature updates for 1 year
30 sites Agency
€129.00/year
Billed yearly
- Pro license for 30 WordPress sites
- All Pro features
- Priority agency support
- Security and feature updates for 1 year
Buying a license requires a GioSuite account, where you manage your sites, API keys and downloads.
Installation and requirements.
- In WordPress, go to Plugins → Add New, search for GioCompress, then install and activate it. You can also download it from WordPress.org.
- From that moment, new JPG and PNG uploads are converted to WebP.
- Open GioCompress → Settings to enable lazy loading or missing alt text, and GioCompress → RetroOptimize to convert images you uploaded earlier.
- For Pro: buy a license, then in your account open Licenses to copy your API key and add your site’s domain. Download GioCompress Pro from Downloads, install it next to the Free plugin and enter the key in GioCompress → License.
Requirements
- WordPress 6.2 or later
- PHP 7.4 or later
- GD or Imagick with WebP support
- AVIF (Pro): Imagick with AVIF support, or GD with AVIF support (PHP 8.1 or later)
- GioCompress Pro requires the Free plugin, version 1.4.0 or later
Questions
Which image formats does GioCompress convert?
JPG and PNG. GIF files and images that are already WebP are left unchanged.
Are my images sent to an external service?
No. Conversion runs on your server with GD or Imagick. The Pro add-on contacts giosuite.com only to check your license and updates, and sends a daily status check with your site’s domain and an installation ID.
What changes when I add Pro?
Pro removes the daily limit for existing images and adds AVIF output, compression quality, maximum width, original file backup, the optimization report and orphaned data cleanup.
How many sites can I use a Pro license on?
1, 3 or 30 sites, depending on the plan. Add each site’s domain in the Licenses section of your account.
What happens when my Pro license expires?
The Pro features switch off and GioCompress keeps working with the Free features. Pro updates stop until you renew.
Can I move to a plan with more sites?
Yes. Contact support and we will help you upgrade, applying the remaining value of your current license whenever possible.
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Try GioCompress on your site.
Start with the Free version and add Pro when you need the extra features.