What are PDF Bookmarks or Outlines?

PDF Bookmarks, technically referred to as document outlines, represent the clickable table of contents displayed in the sidebar panel of PDF readers (like Adobe Acrobat, Chrome, or Preview). They let readers jump directly to specific chapters.

How does the auto heading detection work?

When you upload a file, we use PDF.js on your browser to extract text runs and calculate font scale metrics. We automatically categorize larger font sizes and bold text as document headings, allowing you to select them with one click.

Do the page numbers in the generated TOC update automatically?

Yes! When you opt to insert a visual Table of Contents page at the front, we calculate the number of pages required to host the index. We then automatically offset the target page numbers and link targets accordingly.

Are my PDF documents private?

Absolutely. We process files strictly in memory. They are never saved to disk or database, and they are discarded immediately after the output PDF is returned.

PDF Bookmarks & TOC Generator

Generate PDF Bookmarks & TOC

Auto-generate clickable outline bookmarks and prepend customizable Table of Contents pages. Parse headings instantly in-memory, select a styling template, and preview pages live before downloading.

4 DesignsClean TOC Layouts

Auto-DetectHeading Hierarchy

0B Stored100% In-Memory

Upload your PDF

Drag and drop your file here, or click to browse

.pdf·up to 50 MB

Content preserved

Never stored

PDF reader bookmarks

Process

How It Works

Three steps from upload to your perfectly structured PDF.

Upload your PDF

Drag and drop or click to select any PDF up to 50 MB. No account required to start.

Configure bookmarks & layout

Add manual entries, customize autodetected headings, adjust indents, and choose from 4 TOC templates.

Preview & download

Instantly browse the generated outline on the right, verify clickable link jumps, and download instantly.

Features

Why Use Our PDF Bookmarks & TOC Generator

Interactive table outlining, dynamic templates, zero complexity.

Auto-Detect Headings

Our client-side hierarchy scanner estimates body font sizes and lists heading candidates page-by-page to save time.

Live PDF Preview

See your Table of Contents layout render in real-time as you type or change style templates. Clickable link jumps work instantly.

4 Premium TOC Templates

Choose Minimalist Slate, Classic Editorial with dot leaders, Modern Digital dividers, or Elegant Manuscripts to match your document style.

Sidebar Outline Bookmarks

Generates nested hierarchical trees stored in the standard PDF Outlines catalog, fully visible in Chrome, Adobe Acrobat, and Apple Preview.

Support

Frequently Asked Questions

Everything you need to know about generating PDF outlines and Table of Contents.

How do I auto generate PDF bookmarks?

Simply upload your PDF document. Our client-side analyzer will scan the pages, detect the heading hierarchy based on font sizes, and list them. You can check/uncheck headings, edit titles, adjust indentation levels, and preview the sidebar outline bookmarks tree instantly.

How does the PDF Table of Contents (TOC) page generator work?

When you enable the TOC page option, our server-side compiler dynamically calculates the space needed, draws a professional index page (using standard layouts like Classic Editorial dot leaders or Modern Digital dividers), and inserts it at the front of your PDF. Crucially, it automatically adds invisible clickable Link Annotations so readers can click any chapter title to jump straight to that page.

Can I insert a TOC page into an existing PDF without Adobe Acrobat?

Yes! Our tool is completely web-based and free, requiring no software installation or Adobe Acrobat license. It parses the document tree in-memory, shifts existing pages and link coordinates to account for the new TOC page offset, and registers the clickable jump links and outline nodes automatically.

Are my PDF files stored or analyzed on your server?

No. Your privacy is our highest priority. The initial heading scan is performed entirely in your browser using client-side Web APIs. The final PDF compilation is processed strictly in-memory on our server. We never write files to disk, never store them in databases, and discard all document data immediately after generation.

What design templates are available for the TOC page?

We provide four distinct design templates: Minimalist (clean, borderless slate typography), Classic Editorial (Times-Roman with dot leader lines), Modern Digital (blue accents with row dividers), and Elegant Manuscript (serif italicized subheaders). You can preview each style in real-time as you switch templates.

Will prepending a TOC page shift the original page numbers in the document?

Yes, prepending new pages shifts the page numbers. However, our compiler automatically offsets all generated bookmarks, internal jump links, and outlines by the exact number of TOC pages added, ensuring all navigation coordinates remain perfectly aligned.

What are the credit limits for this tool?

Guests receive 5 free downloads per day, logged-in free accounts get 10 downloads per day, and Lifetime Pro members enjoy up to 100 downloads per day. Generating and previewing the PDF inside the editor workspace is completely free and does not consume your daily download credits.