Image resizing! ! !

I want to prepare theme preview and promotional pictures but I have a problem.

pictures become blurry when I shrink pictures.

I think photoshop knowledge is not enough.

I left two pictures as an example.

how do I solve this problem?

Is there a video tutorial?

when you zoom in on this minimized image, the text is too blurry to be read.

this is the original picture

without disrupting the quality
How do I reduce the picture?

!!! please zoom in to see the difference


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i didn’t ask for a product i bought

Wordpress theme, preview and presentation pictures I’m preparing.

It seems that you designed in high resolution and later compressed it to smaller size. Design the product images in actual size, I mean the size you want. 620px wide design should be good fit for theme single page in themeforest.

Thank you very much for your reply

I don’t really know what tools to use when taking these pictures.

I’m using firefox screenshot tool

my aim is to take different screenshots of the theme and prepare a promotional image in photoshop

but the screen pictures taken 2000x1800px is going to have to shrink them.

If you do this process, the quality deteriorates.

For example, I left a picture below. I want to do this kind of work.

Screenshot_2019-02-15%20Bridge%20-%20Creative%20Multi-Purpose%20WordPress%20Theme Screenshot_2019-02-15%20Soledad%20-%20Multi-Concept%20Blog%20Magazine%20News%20AMP%20WordPress%20Theme

Is there also a training set to prepare visuals for such studies?

Thank you in advance for your reply.