by Daisuke Yamamoto 5 (4 reviews)

Image Quality Control | Still BE

Name: Image Quality Control | Still BE
Rating: 5.0 (4 reviews)
Author: Daisuke Yamamoto

Keep image quality while making files smaller for faster pages - just install and you're set, with automatic WebP and AVIF.

Image Quality Control ranks #9,752 among WordPress.org plugins with 400+ active installations, is #1,060 of 6,651 in the Media category, a 5/5 rating from 4 reviews, and was last updated Aug 20, 2026. Data from WordPress.org, refreshed twice daily — see methodology.

Compatible with WP 7.1.4

v2.2.0 Current Version v2.2.0

Updated 2 months ago Last Update on 20 Aug, 2026

Refreshed 1 week ago Last Refreshed on

#1,060 of 6,651 in Media Top 25% by installs Downloads -13.5% this week

View on WordPress.org

Rank

#9,752

— No change

Active Installs

400+

-12.3%

KW Avg Position

1.5 worse

Downloads

15.9K

+10 today

Support Resolved

100%

— No change

Rating

100%

Review 5 out of 5

5 (4 reviews)

Next Milestone 500

Total Progress 55%

400+ 500+

668

Ranks to Climb

Growth Needed

8,000,000

Active Installs

Pro

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Rank Changes

Current #9,752

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Active Installs Growth

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Active Installs 0,000,000+

Growth +0.0%

Peak 0,000,000

Downloads Growth

Downloads

Growth

Peak

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Reviews & Ratings

5.0

4 reviews

Overall 100%

4 (100%)

0 (0%)

Support Threads Overview

Resolved

Unresolved

Total Threads

Resolved

Unresolved

100%

Resolution Rate

Security History

Source: WPVulnerability

No known vulnerabilities on record for Image Quality Control. Checked 3 months ago.

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Plugin Details

Version: 2.2.0
Last Updated: Aug 20, 2026
Requires WP: 5.8.1+
Tested Up To: 7.1.4
PHP Version: 7.4 or higher
Author: Daisuke Yamamoto

Support & Rating

Rating: ★ ★ ★ ★ ★ 5
Reviews: 4
Support Threads: 1
Resolved: 100%

Keywords

automation AVIF image Optimize webp

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TL;DR

AI summary of the plugin's readme

This plugin is for WordPress site owners who want to reduce image file sizes to improve page speed and Core Web Vitals. It solves the problem of oversized, unoptimized images by offering granular compression controls, automatic WebP/AVIF generation, and optional SSIM-based auto-optimization.

Per-size compression quality control
Real-time compression preview
EXIF data removal
Automatic WebP generation
Automatic AVIF generation
SSIM-based automatic optimization
Edge detection quality check
Optimization status column

Frequently Asked Questions

Common questions about Image Quality Control | Still BE

No. All processing runs on your own server. There are no conversion fees, usage credits, or third-party watermarks.

New uploads are optimized with the current settings as soon as the plugin is active. Images already in the Media Library keep their current files until you recompress them (or enable automatic re-compression). Recompression is also the way to generate WebP / AVIF for images that were uploaded before those options were enabled.

Not required for day-to-day use. Recompress when you want existing uploads to follow new quality settings, or when you want WebP / AVIF created for images that do not have them yet.

Recompression rebuilds resized images (and optional WebP / AVIF) from the original upload using your quality settings. Automatic optimization is an optional background process that further lowers quality step by step while watching visual quality (SSIM), and it can raise the level again if images look too blocky or soft. You can use recompression alone. Automatic optimization is enabled by default when the setting has not been saved yet; a previously saved Enable or Disable choice is kept. Both can increase server load when many images are processed at once — especially bulk recompression — so run large jobs in smaller batches on shared hosting.

It lowers the quality level of each resized image until the target visual quality is reached, using SSIM (structural similarity) as an objective quality metric.

This process runs automatically in the background, one image after another. On shared or low-resource hosts, lower the auto-optimize concurrency if the server becomes busy.

Yes. When you upload a WebP image, it can be optimized as well.

WebP can be generated when your PHP image library supports it (Imagick and/or GD with WebP), or when the optional cwebp-based extension is available. AVIF needs a library that can encode AVIF (Imagick with AVIF support, and/or GD with imageavif). The plugin settings screen shows whether WebP and AVIF are available on your server. JPEG and PNG compression work with the usual WordPress image editors even when next-gen formats are unavailable.

No. Content can keep the usual JPEG / PNG URLs. On compatible servers, the plugin places an .htaccess file under /wp-content/uploads so browsers that send Accept: image/avif or image/webp receive those files when they exist. AVIF is preferred over WebP when both are available.

On typical WordPress hosting, Apache serves uploads and honors .htaccess, so you usually do not need extra setup. Shared hosting almost always falls into this case. Many setups that put nginx in front as a reverse proxy still proxy static uploads to Apache, so the same .htaccess rules often continue to work. You mainly need custom rules if the site is pure nginx (no Apache .htaccess) or if a CDN caches the JPEG / PNG response without respecting the Accept / Vary headers. In those environments, configure equivalent content negotiation on the CDN or web server.