GramProofGRAMPROOF · MAKE EVERY WORD CLEAR
Free AI Grammar Checker & Corrector
Your voice. A more polished draft.
Check grammar, spelling, punctuation, and sentence clarity. Review practical suggestions that help your writing communicate with confidence.
English · 100–2,000 words · Review every correction
.docx or .txt · up to 5 MB
0 / 2,000 words
CLEARER WRITING STARTS HERE
LowHigh
—% Correct
An estimated writing correctness score, not a guarantee of error-free text.
3 free grammar scans per UTC day in this preview. Failed scans do not count.
Make space for better writing
Explore GramProof’s existing Premium plans and writing tools.
Checking sends text to DeepSeek. GramProof keeps results only in this page’s memory; provider retention policies apply.
Trusted by Writers, Students & Teams
A writing workflow for everyday drafts, important assignments, and shared ideas. These audience marks are illustrative, not customer endorsements.
Students
Teams
A Complete Suite of Writing Tools
Move from a first draft to a more thoughtful review with GramProof.
Grammar Checker
Review wording, spelling, and punctuation.
Open checkerAI Checker
Explore the writing signals behind an AI score.
Open checkerPlagiarism Checker
Prepare text for the source-matching preview.
Open checkerContent Quality
Explore a planned view of stronger content.
Fact Checker
Explore planned support for checking claims.
Readability Checker
Explore planned reading-level insights.
See the Suggestion. Understand the Change.
Keep your draft in view while you review a clear explanation for each suggested correction.
The team have prepared a clear report. We recieved helpful feedback from our readers.
have → has
Use a singular verb when treating the team as one unit.
recieved → received
Correct the spelling of “received.”
LowHigh
0% Correct
Communicate With Clarity and Professionalism
A small punctuation change can remove ambiguity. A corrected spelling can keep attention on your ideas. GramProof helps you spot these distractions while leaving the final wording in your hands.
Make your meaning easier to follow
Review sentence structure and punctuation that may interrupt the reader’s flow.
Keep your own voice
Consider suggestions in context and keep the expressions that suit your audience.
Review with confidence
Understand a proposed correction before deciding whether it belongs in your draft.
Power Grammar & Spell-Checking With AI
Useful feedback should tell you what changed and why.
Grammar corrections
Review agreement, tense, articles, and sentence construction.
Spelling corrections
Find suspected misspellings in a separate, easy-to-review list.
Punctuation & sentence clarity
Spot punctuation issues and constructions that obscure meaning.
One-click fixes
Apply one suggestion or all listed corrections when you are ready.
Issue highlighting
See each flagged passage in the context of the submitted document.
Overall writing score
Use an estimated correctness score as a review aid, then recheck after editing.
GramProof Is Built For
Marketers, Writers & Publishers
Give articles, campaigns, and customer messages one more careful review before publication.
Teachers & Students
Use correction explanations to discuss language choices and develop editing habits.
Agencies & Enterprise
Review the documents that represent your team while keeping human judgment in the process.
Works Anywhere
Start in the browser today. These additional connections are planned and are not active grammar integrations yet.
Chrome Extension
Planned connection
Google Docs
Planned connection
Moodle
Planned connection
API / integrations
Planned connection
How to Use GramProof
Step 1: Paste or Upload Text
Add 100–2,000 words of English text, or choose a TXT or DOCX document.
Step 2: Review detected grammar/spelling issues
Check the highlighted passages and read the explanation for each suggestion.
Step 3: Apply corrections and review your score
Use Fix or Fix All, then run a new check to assess the revised draft.
Flexible Pricing
Explore GramProof’s existing plan previews. This page adds no billing or checkout.
Plan preview
Free
Try three successful grammar checks per UTC day in this browser preview.
Plan preview
Pro
Explore the existing plan preview for regular writing workflows. Final paid grammar allowances are not set.
Plan preview
Enterprise
Explore planned team workflows and integrations. Availability and terms are to be confirmed.
Customers Love GramProof
Illustrative testimonials with fictional names and ratings; not verified customer reviews.
“I want an editing tool that explains its suggestions. Understanding a small change helps me make better choices in the next draft.”
Amara Collins
Writer · placeholder
“Seeing the issue beside the original sentence is the kind of feedback I can learn from, instead of accepting a rewrite without thinking.”
Theo Martins
Student · placeholder
“A focused list of corrections would fit naturally into my review process. The final decision should always stay with the writer.”
Leila Brooks
Editor · placeholder