Convert PDF Portfolios
into one continuous PDF.

Only seeing a cover or being asked to open Acrobat? Unfold combines supported PDFs and images inside your portfolio into one readable PDF. Your files stay in your browser.

All current features free No payment required

Your workspace

Free

Processing stays on this device

1 Open2 Arrange3 Export

Drop your PDF portfolio here

or choose a file to get started

Choose PDF files Free batch · up to 10 PDFs · 25 MiB combined · 100 MiB expanded

Ready for a PDF

Made for the files that won’t just open.

Client document packsProject archivesResearch collections

LESS FRICTION. MORE READING.

From a bundle of files
to a clear next page.

PDF portfolios are useful containers.
Until you just need to read what’s inside.

See what’s inside

Open your portfolio and get a clear list of its embedded files, including supported nested portfolios.

A little rearranging

Drag files into reading order and click a row to preview it on the right. Page ranges update as you arrange the contents.

One file. Ready to go.

Download a normal PDF with an optional source index. Keep extracted originals in a separate ZIP.

PRIVATE BY DESIGN

Your documents have no reason to leave.

Everything happens in your browser, on your device. No document uploads,
no conversion server, and no account between you and your files.

How we handle privacy

A COMPLETE FREE WORKFLOW

Useful from the first portfolio.

Batch, organize, export, and keep the originals. No watermark or payment gate.

Read it your way

FREE

Batch up to 10 PDFs within 25 MiB combined input
Drag to arrange files with a side-by-side preview
Reusable export presets for this browser tab
Source bookmarks and a page-range index
Ordinary PDF pages retain existing searchable text

Open your files

Keep the whole picture

ALWAYS INCLUDED

Original input bytes and extracted payloads in a ZIP
Per-file outcomes and exact source page mapping
SHA-256 integrity records in the manifest
Visible warnings for unsupported or uninspected content
100 MiB expanded data · 100 items · 3 nesting levels

Resource limits protect the browser. They are not a paywall. Read all limits

We’re learning from real use before introducing optional paid services. No subscription or checkout is active.

A FEW GOOD QUESTIONS

Before you
unfold.

A few things worth knowing
about your new reading copy.

Read the full limitations

What is a PDF portfolio, anyway?

A PDF portfolio is a container that holds separate files inside one PDF. Many browser viewers only show its cover or ask you to open Acrobat. Unfold extracts supported embedded PDFs and supported images and combines their pages into an ordinary PDF you can read and share.
Why your PDF only shows a cover ↗

Can I convert a PDF portfolio without Acrobat?

Yes. For supported, unencrypted portfolios, Unfold reads the embedded files directly in your browser. You can choose the PDFs you need, arrange them, and export one normal PDF without installing Acrobat.
Follow the conversion guide ↗

Are my documents uploaded to a server?

No. File scanning, previews, merging, and ZIP creation run locally in your browser. Your document bytes are not sent to our servers. Clearing the workspace or closing the tab releases the app’s working copies; files you downloaded remain on your device.

What happens to images and other attachments?

Supported JPEG and PNG images can become pages in your reading copy. Other attachments, including Word files and spreadsheets, are listed and preserved in the originals ZIP but are not converted into pages. Review the file list and export report so you know exactly what made it into the merged PDF.
Learn how to extract attachments ↗

Will my digital signatures still be valid?

The merged PDF is a new reading copy. Digital signatures on the original documents do not transfer to it, and Unfold does not verify signature validity. Keep the original portfolio and use the originals ZIP when you need extracted original bytes.

Does it work with every PDF portfolio?

No. Password-protected, malformed, unusually structured, or very large portfolios can be unsupported. Complex forms, annotations, attachments, bookmarks, and interactive features may not survive a page merge. The app reports skipped files; always review the output before relying on it.

Need a step-by-step walkthrough?

Learn how to convert a portfolio, fix a cover-only PDF or extract the original attachments.

Explore the guides ↗