SumatraPDF opens documents almost instantly and stays out of the way, reading PDF, ePub, MOBI, CBZ, DjVu and XPS. A refreshing alternative to heavyweight readers when all you need is to read a document.
Why choose SumatraPDF?
SumatraPDF opens documents almost instantly and stays out of the way, reading PDF, ePub, MOBI, CBZ, DjVu and XPS. A refreshing alternative to heavyweight readers when all you need is to read a document.
SumatraPDF is open source, so the source code is public, the licence cannot be withdrawn, and no company can move it behind a paywall later. It runs on Windows, and it comes from Krzysztof Kowalczyk rather than from a repackager — this page sends you to www.sumatrapdfreader.org, the publisher's own site, so what you install is the authentic signed build.
Worth comparing before you commit: SumatraPDF vs PDFsam Basic, SumatraPDF vs Foxit PDF Reader, SumatraPDF vs Adobe Acrobat Reader.
SumatraPDF features
- Opens documents near-instantly
- Reads PDF, ePub, MOBI, DjVu and CBZ
- Portable single-executable option
- Tiny installation footprint
How to download and install SumatraPDF on Windows
- Use the official source. The download button on this page opens www.sumatrapdfreader.org, the publisher's own site — that is the safe route. If you would rather we double-check the current link first, ask and we email it. Either way, never take a sumatrapdf download from a mirror or a "download manager" portal, which is where bundled adware comes from.
- Pick the build for your system. SumatraPDF runs on Windows. On Windows take the 64-bit package unless you are on an old 32-bit installation.
- Run the installer and accept the defaults. Krzysztof Kowalczyk ships no bundled extra software with it, so there is nothing to untick.
- Open it once before you need it. Confirming it launches and sees your files or hardware takes a minute now and saves a problem later.
- Keep it updated. Update from inside the program or from www.sumatrapdfreader.org — update prompts arriving by email or pop-up are not from the publisher.
Downloading SumatraPDF in India
SumatraPDF is the same software worldwide — there is no separate India build, no regional licence and nothing extra to pay. A sumatrapdf download in India gets the identical package everyone else receives, straight from www.sumatrapdfreader.org.
We link only to that official source, so a sumatrapdf setup download India from this page cannot arrive wrapped in a third-party installer. That matters more than download speed: the adware people blame on "free software" almost always comes from a mirror site, never from the publisher.
Is SumatraPDF really free?
Open Source. Source code is public; free to use, study and modify. You can download and use it without paying, and without creating an account with us.
How to download SumatraPDF safely
Use the request button on this page and we will email you the current link for www.sumatrapdfreader.org — the publisher's own website — so you receive the authentic, digitally signed build. We do not host, mirror, patch or repackage this software in any way.
Avoid third-party "download manager" sites offering SumatraPDF. They commonly wrap the genuine installer in their own bundler, which is how adware and browser hijackers get onto a machine that the user believed was clean.
Alternatives to SumatraPDF
Other free pdf tools software worth comparing before you decide:
PDFsam Basic
Split, merge, rotate and extract PDF pages offline.
View detailsFoxit PDF Reader
Fast, full-featured PDF reader with annotation tools.
View detailsAdobe Acrobat Reader
The reference PDF reader, from the format's creator.
View detailsSee all SumatraPDF alternatives compared →
Compare SumatraPDF head-to-head
Frequently asked questions
Is the SumatraPDF download free?
Yes. SumatraPDF is open-source software — free to download, use and keep, with no paid edition, no trial period and no feature held behind a key.
Is SumatraPDF safe to download?
It is, provided it comes from www.sumatrapdfreader.org — Krzysztof Kowalczyk's own site, which is where the link we send you points. We host no installer of our own and never repackage software. Nearly every "free software gave me a virus" story traces back to a third-party download portal rather than the publisher.
Which platforms does SumatraPDF run on?
SumatraPDF runs on Windows. Take the build that matches your operating system; on Windows that means the 64-bit package unless you are running an old 32-bit installation.
Do I need an account to download SumatraPDF?
Not with us — FreeSoftwareX has no accounts, no paywall and no download gate. Ask for the link and we email it to you. Krzysztof Kowalczyk may ask you to register on their own site, which is their choice rather than ours.
What are the best free alternatives to SumatraPDF?
The closest free pdf tools options are PDFsam Basic, Foxit PDF Reader, Adobe Acrobat Reader. Each is listed here with its own licence, platforms and features so you can compare them properly rather than guessing.
Tell us what went wrong — a person reads every message and replies. Corrections to this page are treated as priority fixes.
People also search for
The terms visitors use to find this page. Each one lands here because it describes the same program.
Searches from India
SumatraPDF is identical worldwide — these are search phrasings, not different downloads. Every one of them gets the same official build from www.sumatrapdfreader.org.