Why does my online proof look blurry? Will it print that way?

No, it will not print that way. Online proofs are always displayed at low resolution (low-rez) for preview purposes only, so they can look soft on screen even when your file is perfectly sharp.

• The proof is not the print: we print from your actual supplied file, not from the low-resolution proof image.
• What sets final quality: the sharpness of your finished piece depends on the resolution of the file you uploaded, ideally 300 DPI at print size.
• What to watch for: as long as your file was not flagged as low resolution, the print will look far crisper than the proof.

So on-screen blur in the proof alone is nothing to worry about.