Essay Structure Checker
Real-time essay analysis: introduction, thesis, body topic sentences, transitions and readability score.
About the Essay Structure Checker
Essay Structure Checker is a free, privacy-first writing assistant that grades the structural health of your essay in real time and right inside your browser. Paste your draft and the tool instantly identifies your introduction, body and conclusion paragraphs, locates the most likely thesis statement (the last sentence of your introduction), lists the topic sentence of every body paragraph, counts how many transition words you have used, and reports an approximate Flesch readability score along with word, sentence and paragraph counts. A clear 0–100 structure score and an actionable checklist tell you exactly what to fix next — fewer wandering sentences, a clearer thesis, more transitions between ideas. Because the analysis runs entirely on your device, your essay never leaves your browser and is auto-saved to localStorage so refreshing the tab will not lose your work. No sign-up, no API keys, no upload — just a private, instant feedback loop for every draft you write.
How to use
- Paste or type your essay into the editor. The draft auto-saves to your browser between sessions.
- Watch the live Structure score, statistics and checklist update on every keystroke.
- Open the Detected structure panel to see which paragraphs the tool treats as introduction, body and conclusion, plus the thesis and topic sentences it located.
- Address the items flagged in the checklist (length, transitions, sentence variety, thesis clarity) and watch the score climb in real time.
- Click Copy report to paste a plain-text summary into your notes, your tutor’s email or your editor.
Benefits & key features
- Real-time feedback — no submit button, no waiting, no rate limits.
- Auto-save via
localStorageso a stray refresh does not erase your draft. - Detects intro / body / conclusion split, thesis, topic sentences, transitions and readability in one view.
- Heuristic 0–100 score makes structural progress visible during editing.
- 100% client-side — your essay text never leaves your device, perfect for confidential coursework.
Pro tip
Aim for at least 3 paragraphs, 250+ words, an average sentence length of 12–25 words, 3 or more transition words and a Flesch readability score above 50. End your introduction with a single, sharply-worded thesis sentence — the tool uses that sentence as the spine of every other check.