Whether this size is considered "good" or "bad" depends entirely on your specific use case. Pros of 389 KB Cons of 389 KB Fast loading on high-speed internet.
A reasonably complex script, a small localized database file, or customized game assets like a residential lot file for The Sims 4 . (389 KB)
If an image is locked at and looks blurry, you cannot simply "upscale" it to recover lost data. You will need to track down the original, uncompressed source file (often several Megabytes in size) before it was initially shrunk down. Whether this size is considered "good" or "bad"