by kubiq 4.4 (32 reviews)

Images to WebP

Name: Images to WebP
Rating: 4.4 (32 reviews)
Author: kubiq

Convert PNG, JPG and GIF images to WebP and speed up your web

Images to WebP ranks #2,205 among WordPress.org plugins with 9,000+ active installations, is #283 of 6,308 in the Media category, a 4.4/5 rating from 32 reviews, and was last updated Mar 16, 2026. Data from WordPress.org, refreshed twice daily — see methodology.

Tested up to WP 6.9 (Current: 7.1)

v5.0 Current Version v5.0

Updated 6 months ago Last Update on 16 Mar, 2026

Refreshed 12 hours ago Last Refreshed on

#283 of 6,308 in Media Top 5% by installs Downloads -31.1% this week

View on WordPress.org

Rank

#2,205

— No change

Active Installs

9K+

-9.6%

KW Avg Position

62.8

0.5 worse

Downloads

137.8K

+22 today

Support Resolved

— No change

Rating

88%

Review 4.4 out of 5

4.4 (32 reviews)

Next Milestone 10K

Total Progress 92.5%

9K+ 10K+

Ranks to Climb

Growth Needed

8,000,000

Active Installs

Pro

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Rank Changes

Current #2,205

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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

4.4

32 reviews

Overall 88%

27 (84%)

0 (0%)

1 (3%)

4 (13%)

Security History

Source: WPVulnerability

2 known vulnerabilities on record · 0 in the last 24 months · checked 3 days ago

Oct 19, 2021

Images to WebP [images-to-webp] < 1.9

CVE-2021-24641 · Fixed in v1.9
Oct 19, 2021

Images to WebP [images-to-webp] < 1.9

CVE-2021-24644 · Fixed in v1.9

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Plugin Details

Version: 5.0
Last Updated: Mar 16, 2026
Requires WP: 5.0+
Tested Up To: 6.9
PHP Version: 7.0 or higher
Author: kubiq

Support & Rating

Rating: ★ ★ ★ ★ ☆ 4.4
Reviews: 32
Support Threads: 0
Resolved: 0%

Keywords

Optimize convert media pictures

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TL;DR

AI summary of the plugin's readme

This plugin is for WordPress site owners who want smaller image files without extra effort. It automatically converts PNG, JPG, and GIF images to WebP format, either on upload or in bulk, to reduce page weight while keeping the original files and URLs unchanged.

Auto convert on upload
Bulk convert existing images
Bulk convert only missing images
Adjustable image quality setting
Works on Apache and NGiNX
Multisite/network support
Only converts if filesize smaller
Fly Dynamic Image Resizer compatibility

Frequently Asked Questions

Common questions about Images to WebP

Just add ?no_webp=1 to the URL and original JPG/PNG will be loaded

Run Google Chrome and enable Dev Tools (F12). Go to the Network tab click on Disable cache and select filtering for Img (Images). Refresh your website page. Check list of loaded images. Note Type column. If value of webp is there, then everything works fine. NGiNX and Apache together If you have some proxy setup or some other combination of NGiNX and Apache on your server, then probably .htaccess changes won't work and you will need to ask your hosting provider to disable NGiNX direct processing of image static files. Apache .htaccess Plugin should automatically update your .htaccess with needed rules. In case it's not possible to write them automatically, screen with instructions will appear. Anyway, here is how it should look like: <IfModule mod_mime.c> AddType image/webp .webp </IfModule> <IfModule mod_rewrite.c> RewriteEngine On RewriteCond %{HTTP_ACCEPT} image/webp RewriteCond %{REQUEST_FILENAME} "/" RewriteCond %{REQUEST_FILENAME} "\.(jpg|jpeg|png|gif)$" RewriteCond %{REQUEST_FILENAME}\.webp -f RewriteCond %{QUERY_STRING} !no_webp RewriteRule ^(.+)$ $1\.webp [NC,T=image/webp,E=webp,L] </IfModule> NGiNX config After you activate plugin, screen with instructions will appear. Anyway, here is how it should look like: You need to add this map directive to your http config, usually nginx.conf ( inside of the http{} section ): map $arg_no_webp $no_webp{ default ""; "1" "no_webp"; } map $http_accept $webp_suffix{ default ""; "~*webp" ".webp"; } or without map directive: if ( $http_accept ~ "image/webp" ) { set $webp .webp ; } location ~* (.*)\.(?:png|jpe?g|gif)$ { if ( -f $document_root$1.webp ) { set $webp serve$webp ; } if ( $webp = "serve.webp" ) { return 301 '$1.webp'; } } then you need to add this to your server block, usually site.conf or /nginx/sites-enabled/default ( inside of the server{} section ): location ~* ^/.+\.(png|gif|jpe?g)$ { add_header Vary Accept; try_files $uri$webp_suffix$no_webp $uri =404; }

Delete all generated WebP images There is no button to do that and it will also not delete generated WebPs automatically when you deactivate the plugin, but if you really need this, you can run some shell command to achieve this: find . -type f -name "*.webp" -exec bash -c 'if [ -f "${1%.webp}" ]; then echo "Deleting $1"; rm "$1"; fi' _ {} \; This will find all the files with a .webp extension and if there is similar file with the exact filename, but without the .webp extension, then it will delete it.