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To download Dioretsa from the Mac App Store, you need a Mac with OS X 10.6.6 or later. Learn More.


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You can get more information for Dioretsa in my site.

Dioretsa is a pdf viewer that manages pdf files with tabs (Tabbed PDF Viewer).

Basic Functions
When you click a tab, Dioretsa shows contents of PDF document corresponding to the tab.
If you select another tab when you have read PDF document and select that tab again,
you can read PDF document from the page you read last.
Moreover you can select PDF(tab) from tab-list, search a word in PDF document from search box, and speech selected text.

Other Functions
It is available to show plural windows and combine tabs in all windows to one window. (Picture 1)

You can preview PDF pages as thumbnail images and move to selected page. It is also available to resize thumbnails with lower-left slider. (Picture 2)

It is available to jump to the selected number page and rotate PDF pages. (Picture 3)

You can set up preferences below. (Picture 4)
• Hide windows when application is on deactive.
• Hide toolbar automatically in full screen mode.
• Open PDF in background tab.
• Circurate tab movement.
• Outline has priority over thumbnail view.
• Show thumbnails(outline) automatically when PDF document opened.
• Select how to show thumbnail(outline) : Drawer or Split View.
• Fit PDF automatically
• Set up default setting of how to show PDF : Single Page, Single Page(continuous), Two Page, and Two Page(continuous)

You can view PDF in full screen. (Picture 5)
(Dioretsa keeps up with Full Screen Applications of OS X Lion)
It is available to show selected page in left view (Lock Page) and view other pages in center view at the same time. You can with this function view the graph in left view while reading explanation in center view for example.
Moreover you can do "Page Lock" and "Unlock Page" from menu bar or right click menu on center view.

What's New in Version 3.6.3

How to show outline and thumbnails in full screen is changed and you can show them by moving mouse cursor to right end of screen.
Moreover expression for outline and thumbnails got better.


Screenshot 1
Screenshot 2
Screenshot 3
Screenshot 4
Screenshot 5

Customer Reviews


By my definition, an awesome reader does several things, pdf, djvu, has tabs -- or at least an UI/hotkey that allow you to switch from one documents to another, and be able to sync with LaTeX. Dioretsa does half of that.

It is quick with basic feature. It consumes basically the same amount of memory as Preview (in fact a little bit more if you open one or two, but less than Preview if you open many, the more you open the better the tab feature performs). But it cannot remember the page you are on when you use it to reopen documents. The hotkeys are a bit strange, too, you have to get use to it or customize it. I didn't annotate anything with it so I cannot say anything on that.

I bought it because I want the tab feature. It works. I'm satisfied. However, there is a catch: If all you want is switch among documents with hotkeys, Preview can do it: Just hit ⌘+` for that. (I'm not clicking the tabs anyway.)


This is fantastic. I am a graduate student and am constantly reading lots of PDFs. It's so much easier to have them all tabbed. It also supports Lion-style fullscreen. This replaces Adobe as my default reader.

Need to be improved.

Zoom level reverts while reading other PDF files.
Drag and drop doesn't work.

It's not work as I expected, but there's no choice within these kind of pdf viewer.

View in Mac App Store
  • $4.99
  • Category: Productivity
  • Updated: Oct 27, 2011
  • Version: 3.6.3
  • Size: 0.5 MB
  • Languages: English, Japanese

Compatibility: OS X 10.6 or later, 64-bit processor

Customer Ratings

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