Are NanoTools completely free to use?

Yes, all basic tools on NanoTools are completely free to use with no registration required. We offer premium features for power users.

Is my data secure when using NanoTools?

Your files are processed securely and are automatically deleted after processing. We do not store your files or data on our servers.

No installation required. All tools work directly in your browser on any device - computer, tablet, or smartphone.

We support a wide range of formats including PDF, JPG, PNG, WebP, GIF, JSON, XML, CSV, and many more depending on the tool.

Generate Markdown TOC online for free. Create table of contents from headings. Auto-generate navigation.

Auto-generate table of contents for Markdown docs

Min Heading Level: H1

Max Heading Level: H6

1

Enter your markdown document

2

Choose min/max heading levels (H1-H6)

3

Extract headings and create TOC

4

Add to top of your markdown file

Heading text is converted to lowercase kebab-case: "Getting Started" → #getting-started

Special characters are removed, spaces become hyphens for GitHub-compatible slugs.

Yes, set min/max levels. For example, H2-H4 only by setting min=2, max=4.

Yes, generated anchors follow GitHub markdown conventions and will work automatically.