The main causes are likely the differences in specifications between the editing screen and viewing screen, as well as the resolution effects when combining (burning) text onto images.
Please check if either of the following methods improves the situation:
Place "larger text" on "high-resolution images"
Prepare images with as high a resolution as possible (※) and place text (markings) in a larger size.
※Recommended image size: 1280px or more in width
Take a screenshot in the editing screen and re-register the image
For already registered images, please "enlarge and re-register the image" using the following steps:
- Open the editing screen and display the image in a large size
- Take a screenshot of the enlarged image using your PC's screenshot function
- Register the image captured in step 2 to your step again
Related
Add markings and edits to images, such as arrows.
https://teachme.jp/8/manuals/4929404