How can you tell the image resolution quality?
If you don't have access to professional graphic software to verify the file resolution you can use a computer monitor to quickly determine how the file will print.
- Pull up your file from your browser.
- Using Command + or Control + to zoom into the file 3-4 times or 300-400%.
Your file should look sharp at 3-4 time magnification as did on a 100% view. If looks blurry, it means your image doesn't have enough pixels to display correctly on the print.
At this stage, you need to determine how to go about resolving the issue by replacing the image file with a higher resolution image.
Find the image to replace the incorrect resolution image file.
- Replace with 3-4 times larger size of the same image or a file that has 300 dpi resolution or higher.
- From Photoshop adjust the setting and attempt to increase the image quality. Don't just change the file resolution to 300. This method does not solve the problem.