Placehold.it
Placehold.it-Quick-and-simple-image-placeholders-e1385767084161
A useful service that generates placeholders for the parameters in the URL. It doesn’t require (in contrast to other similar solutions) installing any JS libraries.

 

 

Standard placeholder

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350x150

 

 

The revised text and background color

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350x150

 

The revised text
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350x150