Thenaynhe Watermark stamps a watermark image (such as your logo) onto JPEG and PNG images at the moment they are uploaded to the WordPress Media Library. There is nothing to do per image: configure it once and every new upload is watermarked automatically.
The plugin uses the PHP GD library that ships with most hosting environments, and it preserves the transparency of a PNG watermark while still letting you set a global opacity.
Features
- Add an image (logo) watermark to JPEG and PNG uploads
- Nine placement positions (corners, edges and center)
- Adjustable watermark size, expressed as a percentage of the main image width
- Adjustable opacity from 0% to 100%
- Configurable edge margin
- Skip images below a minimum width so small thumbnails are left untouched
- Transparent PNG watermarks are kept transparent
- Simple settings screen with a Media Library picker
Good to know
- The watermark is written onto the uploaded file, so it cannot be removed later. Test with a sample upload first.
- Only the original uploaded file is processed. The intermediate thumbnail sizes that WordPress generates are not watermarked.
- This version supports JPEG and PNG uploads. Text-only watermarks and WebP input are not supported yet.