To increase JPEG resolution using Pixlr, follow the steps given below:
- When you connect to Pixlr, upload your JPEG file
- Click on the lock icon to select the layer from the menu
- Select Clarity under Files > Details > Transparency
- You can change the Clarity level by dragging the slider
- This would improve the image's resolution
- If the result does not meet your expectation, you can change the temperature, color, and noise to get the desired result.