Reviewers consistently say Cert0 gives freelancers and creators peace of mind by making it easy to protect work, prove ownership, and reduce worries about theft, plagiarism, or client disputes. The most specific praise centers on practical controls and ease of use: users like choosing when screenshots are taken to avoid exposing confidential information, and one beta user highlights simple drag-and-drop uploads, clipboard support, and immediate timestamps. Feedback is overwhelmingly positive and one-sided, with no meaningful criticism or recurring drawbacks mentioned in the reviews provided.