how can i blur selected image

[Standby]

I want to know how can i blur any image suppose i had taken a screen and selected area i want to blur then how to do

Cannot find any option 

[Gana268]

Use live focus at camera at more for taking pictures in bokeh mode

[Sidhabhi]

For Pics use live focus mode..and after taking any screenshot,you can't(or use some 3rd party apps)

[Ehsank]

you have to use focus mode and if after taking pic from edit option there will be few option to blur background

[SuBhaM_SaNtRa]

Go to : https://www.fotor.com/features/blur.html

Open the photo you wish to edit with Fotor, click "Edit a Photo", and click "Effect" on the left dashboard.

Choose the Normal blur style "Tilt-Shift" or Special blur style "Tilt-Shift Brush" mode before blurring the picture.

Choose "Circular" or "Linear" of "Tilt-Shift" blur effect.

Apply the Blur effect, distorting and changing your image to maximize the effect.

Save your work, choosing the format and size you wish.

Thank You.

[DarshanChatterjee]

You can't blur the image like that. You need editing apps. I would rather suggest you to just use paint from default editing app to hide any portion in a screenshot.