Hi, i don't understand the reason of this reject, can you explain me please ?

Too small. Please post the original JPEG.

What was the rejection reason Adobe Stock gave you? 

If this is what you submitted, the size does not meet submission requirements.  If this is NOT what you submitted, please post the full size image here so we can see it in more detail.

Meanwhile, read the links below. Adobe Stock customers expect the highest visual and technical quality for use in commercial projects.

• https://helpx.adobe.com/stock/contributor/help/reasons-for-content-rejection.html
• https://helpx.adobe.com/stock/contributor/help/quality-and-technical-issues.html
• https://helpx.adobe.com/stock/contributor/user-guide.html/stock/contributor/help/photography-illustrations.ug.html
• https://helpx.adobe.com/stock/how-to/tips-stock-image-acceptance.html