Recently Google added Picnik editor in Picasa Web Album so that users can edit their pictures using some advance tools available in Picnic. There are lot many options like “red eye remover” etc are 
available in Picnik with other options like Exposure, contrast management, sharpen, crop and much more. If you are using Picasa for storing pictures online, you can use Picnik for editing pictures as per your choice. If you are new to Picasa, It is a clouding service by Google to store pictures online. Picasa provides 1GB of storage for free.
How to use Picnik in Picasa to edit pictures
1. Upload your picture in Picasa by using “Upload” button over there or you can edit an uploaded picture as well.
2. Click on picture to open that in Picasa. Now click on “Edit” button on top-right of picture or the “Edit” dropdown. In dropdown, you need to choose “Edit in Picnik” to use Picnik as an editor
3. Now the picture will open in Picnic where you can use the options available in Picnik. Once you are done with the changes in your uploaded picture, you can click on “Save to my album”. Your edited picture will get saved in Picasa album
Select “Edit” option to use Picnik in Picasa
Picture opened in Picnik
Did you find Picnik much easier and helpful in editing Picasa pictures? Picnik is also available for Facebook users where you can upload pictures in Facebook and edit them using Picnik.