Why Markdown Document Quality Matters
Malformed Markdown leads to broken layouts in documentation sites, screen reader accessibility violations, and poor search engine crawlability. MDForge evaluates your Markdown structure in real-time to ensure flawless rendering across GitHub, Astro, Next.js, and static site generators.
1. Heading Hierarchy
Validates that headings progress logically (H1 → H2 → H3) without skipping levels, ensuring proper HTML outline semantics.
2. Accessibility & A11y
Flags images missing descriptive alt text and links using vague anchor text like "click here" or raw bare URLs.
3. Syntax & Block Integrity
Detects unclosed code fences, asymmetric table column counts, and trailing whitespace artifacts.
4. Readability & Scannability
Measures Flesch-Kincaid reading ease, word count density, and paragraph pacing to keep technical documents engaging.
Frequently Asked Questions
How is the Markdown Health Score calculated?
MDForge parses the document into an Abstract Syntax Tree (AST) and evaluates 4 core quality pillars: Heading Hierarchy (preventing skipped heading levels), Accessibility (verifying image alt text and descriptive link anchors), Syntax & Structure (unclosed code fences and malformed tables), and Readability (Flesch-Kincaid grade level and paragraph length).
Can the Health Engine automatically fix detected issues?
Yes! For common issues like skipped heading depths (e.g. H1 followed immediately by H3) and missing image alt text, click the "Fix" button next to any issue to automatically correct the markdown.
Is my document content analyzed locally or on a server?
All AST analysis runs 100% in your browser using dedicated Web Workers. Your text never leaves your device.
Related Markdown Utilities
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