Free content health checker
Paste your article and get a deterministic report in seconds: a 0–100 health score, SEO checks, six readability indices, a publish-readiness checklist, keyword placement, and a link audit — the same rule set Gixo Quill runs inside the paid workspace.
What it checks, exactly
No black box — these are the actual rule sets behind the score.
Deterministic beats vibes
Most free "content graders" send your draft to a model and return an opinion — different every run, impossible to act on. This checker is a fixed rule set: the same draft always produces the same score, which means the score works as a progress meter. Fix the missing alt text, re-run, and the number moves because the facts moved.
The honest boundary: a deterministic check can tell you a heading is missing, a sentence runs long, or an anchor is broken. It cannot tell you whether your argument is interesting — that stays your job. What it guarantees is that the mechanical failures never reach your readers, and that no usage cap or signup wall stands between you and checking your own work. Up to 100,000 characters per check.
When the gaps need new writing, that's the paid side of Gixo Quill: structured articles across 60+ content types with brand-dictionary enforcement and evidence options — and the free plan includes 10 AI generations per month.