English documents can be checked for spelling errors as well as simple grammatical and stylistic errors using the website OnlineCorrection.com.
This service is quick, free, and does not require registration. Spelling faults, as well as several elementary grammar and style errors, are found and highlighted by OnlineCorrection.com, which also provides recommendations for improvement. You are asked to select one of the proper answers when there are two or more of them.
Even an expert proofreader has trouble finding every mistake in a manuscript. Spelling faults are fairly easy for computers to spot, and they frequently detect other flaws as well. It is impossible for a program to find every grammatical, stylistic, dictionary, and factual fault without a thorough comprehension of the text.