Yes. A blurry photo can cause problems with your UK ETA application, and your application may be delayed or rejected if the photo does not meet the requirements.
When applying, you need to submit a clear photo of your face. This is similar to a passport-style photo, but it is the face photo you upload or take for the application, not the photo printed inside your passport.
Your face, eyes, and facial features should be easy to see. If the photo is blurry, out of focus, too dark, too bright, or taken with strong shadows, it may be difficult to verify your identity.
Low-quality photos can also cause issues. Avoid using screenshots, heavily edited images, filters, old photos, or photos where part of your face is covered. The photo should show your recent appearance clearly.
If you are not sure whether your photo is acceptable, you can check the UK ETA photo requirements guide before submitting your application.
Before you apply, make sure your photo is clear, well-lit, and focused. Your eyes and full face should be visible so the application can be reviewed without unnecessary delays.