Nowadays you can find many online proofing tools which are helpful in checking and commenting on design files. Before proof reading was a time consuming activity and the accuracy level wasn't that great. An artwork approval system is very useful and helps to review and comment any designs before approving (or rejecting) it. This workflow helps in eliminating flaws. Nowadays there are many online proofing tools on the market and designers and publishers are having a hard time choosing the right one. And all online proofing solutions are trying to emphasize their unique attributes to stand out amongst others.
Know your product before buying
2 days ago