There are a few tools out there that can recommend improvements to grammar. For example, a tool might suggest rewriting:
Benchmarks are a tool to validate a list of things, contrast, page load, images using modern formats, dead links, time to first paint, and semantic HTML, a <button> isn’t a <div>.
to:
Benchmarks are a tool to validate a list of things: contrast, page load, images use modern formats, dead links, time to first paint, and semantic HTML (i.e. a <button> isn’t a <div>).
Many of them are now LLM-based, so you could probably just ask a locally-running Qwen3.5 or something for advice as well. Just be careful if you do this to constrain it only to grammar suggestions and not allow it to rewrite your article (LLM-speak is easy to spot).