This plugin hasn’t been tested with the latest 3 major releases of WordPress. It may no longer be maintained or supported and may have compatibility issues when used with more recent versions of WordPress.



Convert PNG images to JPG, free up web space and speed up your webpage

  • set quality of converted JPG
  • auto convert on upload
  • auto convert on upload only when PNG has no transparency
  • only convert image if JPG filesize is lower than PNG filesize
  • leave original PNG images on the server
  • convert existing PNG image to JPG
  • bulk convert existing PNG images to JPG
  • conversion statistics



  1. Upload png-to-jpg directory to the /wp-content/plugins/ directory
  2. Activate the plugin through the ‘Plugins’ menu in WordPress


Ogwekkuminebiri (Ntenvu) 14, 2022
Has all options that one may need! Works great, without any issues!
Sseeboaseka 21, 2022
Will definitely edit this review's star rating, but my question is that before i run this plugin is that would you recommend doing a backup (other than pics?) i dont care about the original png's since i did all the pics myself, but afraid that it sounds too good to be true (no offense intended) im hoping it is. but i used another plugin (jetpack boost) followed all the steps and just made my website slower.. Grade F in GT Metrics. Any help will be greatly appreciated.
Mugulansigo 31, 2022
I had a client site where the developers used ALL PNG IMAGES and it was SLOW. Thank you for this awesome plugin you saved me a ton of time not having to convert manually & re-upload via GIMP!
Read all 37 reviews

Contributors & Developers

“PNG to JPG” is open source software. The following people have contributed to this plugin.


Translate “PNG to JPG” into your language.

Interested in development?

Browse the code, check out the SVN repository, or subscribe to the development log by RSS.



  • added nonce and security checks
  • added button to stop transparency detection or conversion process
  • removed DB prefix from notice table names to make it more readable
  • remove preview box flex centering to make it works with bigger images
  • auto delete PNG backup when JPG deleted in admin


  • replace images also in post_excerpt
  • separate SQL queries
  • added support for FV Player plugin


  • tested on WP 5.9
  • check if file really exists and if has .png extension


  • fix transparency default state


  • tested on WP 5.4
  • save transparency meta and load it instantly next time
  • image viewer – background switch
  • image viewer – centered image
  • image viewer – highlight image borders and show image size on hover


  • do not run second transparency detection if first one return true


  • metadata update fix


  • added support for Broken Link Checker plugin ( blc_instances, blc_links )


  • replace image url also in these database tables: yoast_seo_links, revslider_static_slides


  • tested on WP 5.2
  • handle duplicate names like WP – adding increment
  • optimizing code for faster processing


  • added support for Fancy Product Designer plugin


  • tested on WP 5.0
  • small cosmetic code changes


  • new option: convert only if JPG will have lower filesize then PNG
  • new feature: show converted images statistics
  • fix: conflict when there is already JPEG with a same name as PNG
  • fix: conflict when PNG name is part of another PNG name ( eg. ‘xyz.png’ can rename also ‘abcxyz.png’ )
  • optimized for translations


  • rename PNG image if JPG with the same name already exists


  • BUG FIXED – disabled checkboxes when autodetect is disabled


  • now you can disable autodetect PNG transparency


  • WP 4.9.1 compatibility check
  • new compatibility with Toolset Types


  • Repair revslider database table detection


  • Added option to leave original PNG image on server after conversion
  • Repair SQL replacement query


  • Replace image and thumbnails extension in database tables
  • Moved from Settings to Tools submenu
  • Some small fixes


  • Fix generating background for transparent images (thanks @darkcobalt)


  • Fix PNG transparency detection


  • First version