Writing Style Checker

Scans prose for weasel words, filler adverbs, passive voice and repeated words and shows each in context.

Artifact by Simon Willison

IndexedApache-2.0Text & writingNo sign-up

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Opens tools.simonwillison.net in a new tab. Nothing to install.

Open Writing Style Checker Source code

You provide: Pasted prose
You get: Flagged issues with snippets
Account: No sign-up needed
AI: No AI: a plain tool
Your input: Not stated: check the tool's privacy notes before using private data
Price: Free to use
Made with: AI-built app
Source: Open source
Link check: Answered on Nov 1, 2026

About

Writing Style Checker is an AI-built single-page app in the text writing category (style checker). It opens in your browser, so there is nothing to install. You provide pasted prose and get flagged issues with snippets. It needs no account. It is a plain tool: no AI model is involved. The source code is public on GitHub (simonw/tools).

Category: Text & writing · style checker

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Details

Auth: No auth
License: Apache-2.0
Repository: github.com/simonw/tools
Website: tools.simonwillison.net/writing-style
First seen: Oct 31, 2026
Last checked: Nov 1, 2026
Source: GitHub

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Cite this page

Writing Style Checker: free online. Agent Mart. https://agentmart.dev/artifacts/writing-style-checker (last updated 2026-11-01)