When comparing Sumatra PDF vs Xodo PDF Reader & Editor, the Slant community recommends Sumatra PDF for most people. In the question“What are the best PDF viewers for Windows?” Sumatra PDF is ranked 1st while Xodo PDF Reader & Editor is ranked 4th.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Starts quickly
Pro Free and open source
Sumatra is available for free, licensed under GPL with source code available on GitHub.
Pro Low resource usage
Pro Does not have heavy editor features
Annotations and other heavy features are just not needed in reader.
Pro Extensive keyboard shortcuts
Pro Elegant interface
Pro Portable
The application consists of a single file that can be run without installation. You can put it on an external device, such as an usb thumb stick and run it on any Windows machine from the thumb stick.
Pro Multilingual
It's available in 69 languages.
Pro Efficient user interface
You get what you want by few interactions.
Pro Works great with diverse cloud services (e.g. Seafile) and saves changed documents on the fly in the cloud
Pro Very (very) good support
Feature Requests and bugs are nicely handled.
Pro Multi-tabs
Can open more than one PDF at a time in tabs.
Pro PDF can be read from SD Card
Xodo does not copy the PDF files to the internal memory.
Pro Reflow
App can reflow any PDF for an enhanced reading on small terminals. The process is a bit slow but works for every PDF.
Pro No ads
The reader offers a lot of features for free with no ads.
Pro Great handling for S-Pen/Digitizer
Cons
Con Windows only
Con Lacking in features
Sumatra aims for simplicity at the expense of functionality. For example, there's no way to annotate PDFs or edit them.
Con Fonts are not smooth enough
Not as smooth as e.g. Adobe Reader. No anti-aliasing
Con Cannot crop empty fields
Just got used to this killing feature on Goodreader on Mac.
Con Incitation to update to Pro Version
Con Column view buggy
Sometimes the column view is not correctly displayed.
Con No more Google Drive API
Xodo has stopped Google Drive API compatibility.
Con Lag when reading
When switching pages, there can be some lag and a re-zoom of the page.