From August 26, 2021, forward over the next 1 553 days, there were 14 checks done on proofreading.org's uptime. During the course of the checks, proofreading.org was online 1 times, the last uptime occurred on August 26, 2021, and a code 200 was returned. Based on all completed evaluations as of November 27, 2025, no periods of inaccessibility were detected for proofreading.org. A recent error, coded as 403, was identified on November 9, 2025, as the most recent error out of the 13 responses with errors. The response time recorded on November 9, 2025, for proofreading.org was 0.033 seconds, contrasting its average of 0.097 seconds.