Most common causes
- Exporting at a lower resolution than you need
- Resizing the image up after export in another tool
- Starting from a low-resolution input (thumbnail, compressed screenshot)
Fixes
- Export at the highest available resolution for your plan
- If you need a larger output, run Upscale before exporting
- Avoid re-exporting multiple times in lossy formats (like JPEG)
- Avoid enlarging the image after export in another tool (this will look blurry)