Large PDFs

Big PDFs open from your own disk and stay easy to get around.

Year-end binders, long contracts, scanned archives, full plan sets. Redpen opens a PDF of any size from your own drive, with views, split view, page thumbnails and search to get around it.
A-101 First Floor Plan
Redpen with a drawing set open and a floor plan in view
A-01.1What it doesFree

What it does.

Any PDF, any size
Open files from folders, recent files or synced cloud folders, straight from your own disk. How quickly a very large file opens depends on your computer.
Views and split view
Zoom, split view, rulers and a grid, and several files open in tabs, so a set and its addendum can be open together.
Jump to any page
Use page thumbnails and search. With Pro, the Sheets list reads each sheet number and title from the title block, so you can search by sheet.
Search that handles patterns
Find text with whole-word and pattern search, and search a folder of PDFs, not just the open file.
A-01.2How it goes

Opening a big set.

  1. 01
    Open it

    Drop the PDF on the window, or open a whole folder of PDFs at once.

  2. 02
    Find your page

    Use the page thumbnails or search. With Pro, the Sheets list names every sheet.

  3. 03
    Read, mark up, save

    Mark it up for free, then save.

A-01.3Also

Getting around a big file.

  • Free, with no account needed to view
  • Several files open in tabs
  • Open a whole folder at once
  • Nothing is uploaded
A-01.4Limits

What it does not do.

  • Speed on a very large file depends on your computer.
  • A scanned file has no text to search until it has had OCR, which is Office and Pro.
A-01.5Questions

Open large PDFs: short answers.

Is there a file size limit?
The free plan opens and views any PDF, any size. How fast a very large file opens depends on your computer.
Is it really free?
Yes. Viewing, markup, printing and saving are free, with no time limit and no card.
Do I have to upload my file?
No. Redpen is a desktop app, so big files open straight from your own drive with no upload to wait for.
RelatedPDF markup Compare PDFs OCR scanned PDFs Every tool, by plan

Come on in. The viewer is free.

Download Redpen and open your first PDF in a minute. The free app needs no account. Every new account can try Office or Pro free for 14 days, no card.

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Windows & Mac · No credit card · Your files stay on your computer