SumatraPDF v3.1.2

billon on 17 Aug 2016
  • 6MB (uncompressed)
  • Released on 14 Aug 2016
  • Suggested by Darkbee

SumatraPDF is a lightweight, tabbed document reader for a variety of formats. Includes a wide variety of views including table of contents, rotation, facing pages, book view (2 pages side-by-side), full screen, and presentation mode. Includes support for bookmarks, command-line arguments, hotkeys, and more. Additionally, Sumatra can function as a portable browser plugin. Supported formats include PDF, CBR, CBZ, CHM, DJVU, EPUB, FB2, MOBI, PDB, XPS.

Alternatively, Sumatra Portable adjusts recently used and most used file paths.

System Requirements: WinXP / Vista / Win7 / Win8 / Win10
Writes settings to: Application folder
Stealth: ? Yes
Unicode support: Yes
Path portability: No
License: GPL v3
How to extract: Download the ZIP package and extract to a folder of your choice. Launch SumatraPDF.exe.
Similar/alternative apps: STDU Viewer
What's new?
  • Fixed issue with icons being purple in latest Windows 10 update.
  • Tell Windows 10 that SumatraPDF can open supported file types.

55 comments on SumatraPDF  The Portable Freeware Collection Latest Entries Feed

Moroni 2007-02-28 13:10

It may starts up very fast, but it is really slow when opening PDF documents. Its redering engine is about 5 times slower than Foxit Reader []

a 2007-03-22 13:12

nice and simple, wish it has basic features such as select, select all, copy, ect and a mdi interface or tabs or multiple viewing. i havent seen any other opensource, and really small pdf viewers.

nutri-yo 2007-03-22 20:20

If I put it in my Program Files folder, it'll create a SumatraPDF folder in My Documents and Settings folder.
If I put it in My Documents folder it will not.

granny 2007-03-22 20:52

buggy beta.
A Word doc I converted to pdf with PDF995 crashes Sumatra if I open it from Explorer, but opens fine if I use Sumatra's menu File Open. Another larger doc converted the same way gives no problems at all.
The problem doc when converted with OpenOffice gives no problems at all.
Possibly something to do with using GhostScript in PDF995 ???
Hope they get the bugs out, its wonderfully small.

Pek 2007-03-23 02:12

Fast, simple, usefull, but missing search option.

Thorsten 2008-01-14 06:38

Regarding some old posts above: The new version 0.8 is as fast as it probably can get - and supports searching, selecting and copying text to the clipboard (no "select all" function, though). It's a bit tricky to find, however: To mark text, left-click and drag while keeping CTRL pressed.

It copies everything covered by the yellow area, regardless of words or lines, so you'll have to carefully avoid getting to close to characters you don't want to be copied.

Also, when you paste the copied text, there's always a line-break at the end. (I don't know if this is a bug or intended behavior.) Quite rarely, search won't find text even though it's there.

Other than that, everything works fine. It has never crashed for me, either.

Despite the description above, the zip-version available from the website is indeed not fully portable, it does write settings in Documents and Settings. If you can't live with that, wait until John Haller updates his fully-portable version at

MadArtists 2008-05-18 17:41

I love this SO much. Perfect for people who don't use PDF all the time and/or don't need a lot of functions. Small, fast and
friendly. I'm so glad to be free of Adobe. I've haved Foxit in the past too, but I like this much better.

Lyx 2008-06-09 03:24

This would be a wonderful replacement for other PDF-Viewers, if it weren't that the app is missing one feature which almost any other app has by default: Remembering your viewing-settings. Well yes, 0.8.1 now remembers SOME of those settings, but still not all - for example, i want my PDFs to open in a maximized window, but sumatry wont remember that - it will always open files in a small window and i therefore always have to maximize the window manually. This may sound trivial, but its the kind of features which you normally dont notice anymore because you asume them to be normal - you only miss then when you get an app which lacks them.

MADSTEINKOLLEN 2008-06-19 20:35

its a simple ... but very slow to start ... for practically i think its use full for people who dont need pdf anytime

Webfork 2008-08-02 23:08

Although it has simplicity and reliability on its side (have been using constantly for months), Foxit ( handles printing of dramatically better, has more features, and is more intuitive, though it is mild nagware.

dianoga 2008-12-04 20:00

Can Sumatra 0.9.3 show sticky notes and other annotations to the original PDF? For some reason they do not show up.

Lyx 2009-11-17 23:15

Updated comment from me for version 1.0: I have no issues with this app anymore. It no longer writes settings outside the app folder, remembers viewing-settings correctly, doesn\\'t crash anymore here, and just basically does anything i\\'d want of a simple lightweight PDF-Viewer.

Gmacri 2010-05-19 21:51

I would like to see in the toolbar 2 icons: copy text and copy figure (As in Foxit Reader).
I know this may be done by some keys(that sometimes I can't remember when more I need).
I hope there will be an update with this practical icons

MarK 2010-10-24 12:36

@dianoga. Sumatra 1.1 does not show comments added with PDF-XChange Viewer.

ChemZ 2010-11-10 18:26

Is it just me or does SumatraPDF still store it settings Application Data folder?

Wolfghost 2010-11-10 21:56

@ChemZ: Only in Application folder\sumatrapdfprefs.DAT, as I know ;)

ChemZ 2010-11-15 17:16

Think I found the problem...
It only creates sumatrapdfprefs.dat in the App folder if you place SumatraPDF in your 'progam files' folder, or a folder starting with 'program', eg. 'Program (Portable)'
Place it somewhere else and it should be ok!

Shadeclan 2010-12-24 20:29

Sumatra is great - about a million times faster than Adobe Reader plus, if you need to copy text from a document, you can bring it up in Adobe Reader in the same place in the document as Sumatra. I got Sumatra for the way it saves your place in a given PDF, stuck with it for it's speed, portability and size.

Singularity 2011-02-04 15:10

Many apps around are already portable, or they usually have a zip counterpart without installer. I tell this to avoid you installing those so called "portable" versions, doing nothing more than loading useless spashscreen and adding space to your drive. The zip version of Sumatra pdf, downloaded from author page, it's many times faster then the other so called "portable" version you find on other websites like Portableapps and so on.

PDFComment 2011-02-04 18:23

Tried Sumatra recently, and I really like it. But when I create a PDF file from black-and-white GIF files (2 colors) using eg. Faststone Viewer (using "Create/ Multipage file/ PDF"), they show up blank in Sumatra.

JohnTHaller 2011-02-05 05:15

@Singularity - You'll find that your recently opened files in Sumatra PDF's zip version will fail to open as you move PCs and your drive letter changes. The release of Sumatra fixes that issue. And if you don't like it, you can disable the splash with a quick INI change.

Jami 2011-02-05 20:43

Singularity@ - Good call! Takes you from 2 lone files up to 29 files & 11 folders. A hefty price to pay just to remember the last file viewed. Especially if you use lots of portable apps.

JohnTHaller 2011-02-05 21:05

@Jami Categorizing 230k as 'hefty' is an exaggeration to say the least, especially considering the majority of those files are source code and help files you can delete if you don't want em.

linuxx 2011-02-06 05:32

Jami, you can usually get an app directly from most developers. That will alleviate much of the exaggeration problem. 'They're so small' is the same argument often used to fill your system with tons of language files and the like. The direct plan would also soothe the 'just waiting for missed or lagging updates to become available' problems. Choice is good.

PDFComment 2011-03-13 13:37

The error i described on 2011-02-04 still exists. Too bad, because I really like this program, and look forward to the day I can replace my old Foxit with Sumatra. The error is: PDF's I make from B/W GIF's show up blank in Sumatra!!


Beeber 2011-03-14 17:45

@linuxx...Alot of people don't realize this. Thanks for posting the facts.


Emka 2011-03-15 17:45

I'm wondering whether it is possible to use the browser plugin with the portable version?


SYSTEM 2011-03-17 17:00

@Emka: Yes, it's possible. I do so myself. :)

Here's how...

First, download the INSTALLER and extract it with Universal Extractor ( ). When prompted, answer that the installer is not InstallShield.

After that, exit the web browser and copy the files npPdfViewer.dll and SumatraPDF.exe to the plugin directory of the browser. Optionally you can copy DroidSansFallback.ttf as well.

Finally, restart the browser and enjoy the plugin.


PDFCOmment 2011-04-24 05:46

Sadly, the GIF-bug still exists. (See my comment on 2011-03-13). Too bad, because I'm looking forward to replacing my Foxit with Sumatra!!


zak_711 2011-04-24 07:53

@SYSTEM: I tried this version but you need npPdfViewer.dll and SumatraPDF.exe portable in the plugins dir: from 1.56K to 3.56K!


Magibon 2011-04-24 22:20

oh yea.. finally can view PDF in OperaPortable :)

Thanks SYSTEM!

Opera additionally requires "libmupdf.dll".


ChemZ 2011-04-24 23:37

v1.5 has bulked up almost 2 megs! Whoa!


SYSTEM 2011-05-31 12:55

@Magibon: You're right, Sumatra PDF requires libmupdf.dll. (It wasn't needed at version 1.4.)


TTwrs 2011-07-20 18:04

Unfortunately, version 1.7 no longer runs under WinXP-sp1 or Win2000.


foundusually 2011-09-19 07:32

Many of the comments are incorrect and can be answered if those posting read the Sumatra manual


Emka 2011-10-25 12:07

Finally I got rid of Adobe Reader and switched to Sumatra, the browser plugin works just as well.


Ennovy 2011-11-24 10:00

Remove the fantastic yellow background by starting the software with a parameter, like this:

sumatra.exe -bg-color FFFFFF

to get a white background

There are more parameters possible. See the manual.


webfork 2011-11-24 18:37

Very cool -- thnx Ennovy


Midas 2012-04-03 21:59

@Ennovy: another way would be to edit sumatrapdfprefs.dat file with the tiny BEncode Editor (portable, found @ and change the 'BgColor' integer to '16777215'... :)


I am Baas 2012-04-04 09:31

Awesome tip. Thank you. BEncode Editor project page is at


Ennovy 2012-04-04 10:26

@Midas : Thanks for the hint!


tonga 2012-08-17 13:43

According to the manual:
Once started with:
sumatra.exe -bg-color FFFF
the background color persists (stored in sumatrapdfprefs.dat).
So, the next time you start with sumatra.exe the background will be white.


Shadeclan 2012-09-14 18:59

I love this application! Not only does it allow me to eliminate nearly all dependency on Adobe reader (A major resource hog) but it also doubles as an e-reader (I found that out by accident) and it even has a plug-in for Firefox! Also, since it doesn't run JavaScript embedded in the PDF, a major security hole is filled! I highly recommend this fast little PDF reader for anyone who has had it with Adobe!


Midas 2012-11-07 16:06

For anyone interested, optimized x64 pre-release builds (currently v2.2.6650) of Sumatra PDF can be found @


Emka 2013-05-22 17:24

Re portable browser plugin: It seems that extracting the installer no longer works on v2.3.


Mike.S.G. 2013-05-23 04:13

The good - a new 'SumatraPDF-settings.txt' file.
The bad - wont run on non-SSE2 processors.


Midas 2013-05-23 08:47

For bleeding edge x64 builds, check Dirk Paehl's Open Source page -- where, along with a truckload of other PDF, Internet and video utils, you can currently find a v2.4 SVN Revision 8141 (compiled 19-may-2013):


Mike.S.G. 2013-05-24 12:02

v2.3.1 released -

This version will once again run on older (non-SSE2) CPUs. Checkout the advanced settings: Settings - Advanced Options. The link for help with the settings is found at the top of the text file.


SYSTEM 2013-05-25 13:29

@Emka: Confirmed. I'm afraid install-copy-uninstall is the only way to extract the plugin from now on. :(


SYSTEM 2013-05-25 15:59

Actually, the installer of Sumatra PDF 2.3 can be extracted by running it with the /x command line switch. :) Extracting the installer requires admin rights, though.

So, updated instructions to extract the browser plugin:

Download the installer. Extract it by running it with the /x command line switch.

Exit the web browser and copy the files libmupdf.dll, npPdfViewer.dll, SumatraPDF.exe and optionally DroidSansFallback.ttf to the plugin directory of the browser.

Finally, restart the browser. The plugin is ready for use.


ihateyou 2013-11-15 02:35

SumatraPDF would be great if it didn't support DRM. It prevents you from copying or printing PDFs that are "protected", and the author refuses to make it optional. Hypocritical for Free Software to support DRM if you ask me.


Emka 2015-11-03 07:24

Any ideas if the portable browser plugin still works with v3.x? When I follow SYSTEM's extraction instructions above, I don't get npPdfViewer.dll but two other dlls, PdfFilter and PdfPreview. Without nPdfViewer the plugin does not work, with it opera:plugins (good ole Opera 12) says the plugin is still at v2.5.2, the version of said dll.


ripu 2015-12-24 06:31

I was using sumatra for a long time. Recently I had to open a high graphics magagine PDF. And it was very slow, slower than foxit and pdfxchange. Then I tried all the pdf viewers in this site.

After testing I found that, Universal Viewer is the fastest PDF viewer, especially for high graphics magagine kind of PDFs. I have a lower mid range laptop. Universal viewer throws sumatra, pdfxcange, foxit out of water when it comes to speed of loading one after another high graphics page. And it's the lightest of all the PDF viewers, uses minimal CPU unlike others I have mentioned.


ripu 2015-12-24 06:46

Ignore my previous comment. I am an idiot. It actually uses an old version of Sumatra, which was faster and lighter.


Midas 2015-12-24 15:59

@ripu: you shouldn't be so hard on yourself, mistakes happen. :)


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