What rules does the Markdown Lint and Style Checker validate?

It checks ~15 standard markdownlint rules (like heading levels, list markers, and code fences) and Chinese-typography rules (like spacing between Chinese and Latin characters).

What issues can the auto-fix feature safely resolve?

It automatically fixes trailing whitespaces, consecutive blank lines, inconsistent list markers, missing blank lines around headers/lists, and missing trailing newlines.

What is the difference between the Default, Strict, and Lenient rule sets?

Default checks standard rules; Strict adds strict line length (MD013) and ordered list prefix checks; Lenient suppresses style warnings to focus only on errors.

Does the tool modify my original Markdown structure or content?

No, it only fixes safe formatting issues. Structural issues like skipped heading levels or missing code block languages are reported for manual correction.

How does the Chinese-typography rule (CN001) work?

It detects and flags missing spaces between Chinese characters and Latin characters or digits, helping you maintain clean, readable bilingual text.

Elysia Tools

Navigation

Text Processing

Markdown Lint and Style Checker

Lint Markdown against ~15 markdownlint rules plus 2 Chinese-typography rules, with line-located reports and one-click auto-fix of safe issues

Details

What this tool helps you do

Tokenizes Markdown into blocks and runs a markdownlint-inspired rule engine (MD001/004/009/012/013/022/024/025/029/031/032/040/041/042/045/047) plus Chinese-typography rules (CN001 space between Chinese and Latin/digits). Reports each issue with its line, rule ID, severity, and a fix hint. Auto-fix applies only safe deterministic fixes (trailing whitespace, blank lines, list markers, trailing newline). Three rule sets: Default, Strict, Lenient.

Execution

Run this tool

Fill in the form, run the tool, and review the result in one place.

Result

Ready for a run

Run the tool to preview files, text, structured data, or streamed output here.

Samples

Markdown Lint and Style Checker

What this tool helps you do

Run this tool

Prepared example runs

Inputs

Result

Examples that match this tool

Continue with connected tools and hubs

Prepared example runs

Inputs

Result

Learn when to use this tool, what it supports, and how real users apply it.

Key facts

Overview

When to use

How it works

Use cases

Examples

1. Standardizing a Project README

2. Fixing Bilingual Spacing in Documentation

FAQ

Markdown Viewer Samples

Markdown Samples

Markdown Slide Deck Samples

Test Pyramid Examples - Testing Strategy Guide

Markdown Link Extractor

Indented List to ASCII Tree

Security Headers Checker

AI Domain Name Idea Generator

Editorial Copy Review and Brand Voice Tools

Markdown Export, OCR, and Document Conversion Tools

Markdown Writing and Publishing Tools

Documentation Authoring, Extraction, and Publishing Tools