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Focused tools

10 Markdown jobs

Runtime

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Private Markdown tools for writing and publishing

Preview, convert, format, lint, outline, audit, generate tables, extract text, and inspect Markdown without uploading drafts.

Every operation remains in the active browser tab.

Choose a Markdown job

Each route owns one concrete result contract.

Markdown PreviewRender Markdown as an inert visual preview after applying an explicit raw-HTML policy.Open tool
Markdown to HTML ConverterCreate copyable HTML source from one declared Markdown profile and raw-HTML policy.Open tool
HTML to Markdown ConverterSanitize a pasted HTML fragment, then serialize its supported structure as Markdown.Open tool
Markdown FormatterNormalize portable Markdown presentation after parsing the selected syntax contract.Open tool
Markdown LinterReport a focused, bounded set of structural Markdown diagnostics with source lines.Open tool
Markdown Table of Contents GeneratorTurn document headings into nested Markdown links using deterministic GitHub-style slugs.Open tool
Markdown Link AuditorCreate an offline link inventory and flag unsafe schemes without testing network reachability.Open tool
Markdown Table GeneratorTurn a small explicit JSON table model into escaped GFM table syntax.Open tool
Markdown to Plain Text ConverterRemove Markdown presentation syntax while retaining readable top-level content boundaries.Open tool
Markdown AST ViewerSerialize the parsed Markdown tree as bounded JSON for parser debugging and integration review.Open tool

Start with a safe Markdown preview

Render a sandboxed local preview here, or open a focused route for conversion, formatting, linting, navigation, tables, text, or AST work.

Preview Markdown

Text stays in this tab. Markdown is capped at 500 KiB; pasted HTML uses a 256 KiB cap.

Sanitized preview

No result is placed in a URL, account, preset, API, or remote log.

A bounded local document workspace

Drafts can contain private links, release details, or unpublished copy. Tool Swim processes them in the active tab with no upload, fetch, cloud save, preset store, or content-bearing telemetry.

Choose CommonMark or GitHub Flavored Markdown explicitly. Markdown inputs are capped at 500 KiB, raw HTML at 256 KiB, and output at 1 MiB.

Preview HTML is sanitized, stripped of active or network-loading elements, and displayed in a sandbox. Link audits remain offline and never claim that a destination is reachable.