Depends - could be wrong dimensions or where you’re posting is compressing the resolution. You’ll want to make sure when designing you are using the right image dimensions. (Example: Instagram posts are 1080x1080)
Thread
I don’t understand why every time I download my design from Canva it’s not blurry but if I upload it elsewhere, it’s blurry. What am I doing wrong? 😭
Possible you’re uploading too large/high-res of a file elsewhere, and it’s being recompressed. There’s a great app for reducing image filesize called Optimage