Correct misused words at the moment of posting.
An English correction engine for social comments and posts, integrated with your Submit or Post button. Checks commonly confused words in milliseconds, without rewriting the author’s voice.
Returns corrected text or suggestions your users can review.
Informal writing needs the same care. A 50,000-sentence evaluation, on September 11, 2026, changed 273 of 50,000 sentences of informal comments. Of 100 reviewed changes, 60 were judged correct and 40 damaging. A September 19, 2026 pilot on an earlier build using 1,000 sentences changed seven sentences: four useful corrections and three damaging changes. Both evaluations used earlier builds and do not measure the latest production version. The pilot was developer-reviewed and is too small for a general accuracy estimate. We do not currently recommend it for unattended correction of informal conversational text, and the measurement is in the accuracy section.
Engine timing excludes network and hosting delays. Benchmark details. For social platforms, /v1/check returns suggestions and their positions so authors can review changes before publishing.
Public demo only. Don't submit confidential, personal, regulated, or security-sensitive information. Privacy
Output:
Twelve sets: its/it's, your/you're, then/than, who's/whose, lets/let's, there/their/they're, lose/loose, affect/effect, accept/except, could of → could have, and the typos if/of and form/from.
Or try one, a mistake from each rule:
And one that shows what it will not touch. A URL, an email address, a handle or code is left exactly as written, even when it contains the very thing being corrected in the sentence around it: