Zotero Plugins Atlas
Plugins / Reading & PDFs

Split-View Reader

by xiaoyang0103 · github.com/xiaoyang0103/zotero-split-view-reader-z10

Shows the same PDF or two different PDFs side by side in one reader tab.

Split-View Reader has Atlas grade B (use with care) because a zotero:// link (a web page can open one) can make it install add-ons without asking you (from zotero-plugin-toolkit), and 1 more finding. Last checked 6 Nov 2026.

Reading & PDFsInterface & look
View source
There's no release file current Zotero can install. The source stays linked for reference.
In useAn estimate of how many copies of Zotero have it: Zotero downloads each new version once for every copy that has the plugin, so we count the downloads of its most-downloaded recent release. Rounded. Plugins that update from outside GitHub count low.
7
DownloadsAll-time downloads of its release files from GitHub, counting every update. Installs from elsewhere aren't counted.
7
ReleasesVersions published on GitHub. Everyone who has the plugin downloads each one again, which adds up in Downloads.
1
StarsPeople who starred the repository on GitHub: a rough measure of interest.
0
ContributorsPeople who have committed code to the repository.
1
LicenceThe licence the code is published under, as GitHub reports it.
AGPL-3.0
B
Atlas gradeUse with care
because a zotero:// link (a web page can open one) can make it install add-ons without asking you (from zotero-plugin-toolkit), and 1 more finding
Applies to v1.3.1-local.2, released 28 Oct 2026Code checked · not yet tested in a live Zotero
Zotero won't install this fileZotero won't install this file: its manifest has no update address, which Zotero requires
Another plugin uses the same ID2 other plugins share this add-on ID. Zotero can only install one of them.
What we found in the codeSets the gradeThe worst finding in these three areas sets the grade.
Code transparencyReadable code; not yet checked against the published sourceThe developer uploaded the release file from the xiaoyang0103 account. We haven't yet checked whether this file matches the public source code.UnknownWe couldn't check this yet.
Updates
Doesn't update automatically
Where your data goesOnly contacts services we could identify1 address in 1 group.LowLow concern: normal for plugins that do this job. Listed so you know.
Zotero (1)
api.zotero.org
Where we found it
api.zotero.orgcontent/scripts/zotero-split-view-reader.js · line 4745
const client = Zotero.Sync.Runner.getAPIClient({ apiKey });
Powerful capabilitiesA zotero:// link (a web page can open one) can make it install add-ons without asking you, and 3 moreMediumMedium concern: worth reading before you install. One medium finding makes the grade B.
Medium concern (2)
A zotero:// link (a web page can open one) can make it install add-ons without asking you (from zotero-plugin-toolkit)A zotero:// link can make it run code if you approve a prompt (from zotero-plugin-toolkit)
Low concern (2)
Works with files on your computerUses Zotero's password manager
Where we found it
A zotero:// link (a web page can open one) can make it install add-o…content/scripts/zotero-split-view-reader.js · line 140

zotero://plugin. zotero-plugin-toolkit removed this link in version 6.0.0; this plugin is built with an older version

Services.io.getProtocolHandler("zotero").wrappedJSObject._extensions["zotero://plugin"] = pluginBridgeExtension;
A zotero:// link can make it run code if you approve a promptcontent/scripts/zotero-split-view-reader.js · line 96

zotero://ztoolkit-debug

Services.io.getProtocolHandler("zotero").wrappedJSObject._extensions["zotero://ztoolkit-debug"] = debugBridgeExtension;
Before you installShown, not gradedFacts to help you decide. They don't change the grade.
Works withZotero won't install this fileDoesn't work with the current Zotero (10)MediumMedium concern: worth reading before you install. One medium finding makes the grade B.
Zotero 9 ✗ doesn't workZotero 10 ✗ doesn't workZotero 11 beta ✗ doesn't work
What you'll needAn older ZoteroDetected automatically from its code
No further detail for this area yet.
MaintenanceActive · last release 28 Oct 20261 contributor
No further detail for this area yet.
LanguagesDocumentation in EnglishInterface: English and Chinese
No further detail for this area yet.
We report what we found in the code. Open any area for the evidence.How we gradeReport a problem

What it does

Written by AI from the README

Shows the same PDF or two different PDFs side by side in one reader tab. Each pane scrolls on its own, or you can set a master view so the other follows. A Zotero 10 build of Fuling Lin's Split-View Reader.

Comparing two papers, or reading a paper beside its appendix, otherwise needs separate windows. Its developer notes an accessibility setting that may reduce stuttering on Windows, and tested only on Windows.

What you'll need

Detected automatically
  • An older ZoteroNot working with Zotero 10

Where your data goes

We found: only contacts services we could identify. 1 address in 1 group.

Zotero (1)
api.zotero.org
Evidence · file and line
api.zotero.orgcontent/scripts/zotero-split-view-reader.js · line 4745
const client = Zotero.Sync.Runner.getAPIClient({ apiKey });

Forks and copies

2 other plugins use the same ID as this one. Every Zotero plugin carries an ID, a name tag Zotero uses to tell plugins apart. These 3 plugins carry the same one, because people copied Split-View Reader to make their own versions and kept its ID.Show what this means
  • You can only have one. Zotero sees them as the same plugin.
  • Installing another replaces it. If you install one of the others, it takes this one's place.
  • Check what you install. Several share this plugin's name, so make sure the file comes from the one you meant.
Split-View Reader · this pluginxiaoyang0103/zotero-split-view-reader-z10BUse with care728 Oct 2026
Split-View ReaderThe most used · zerolfl/zotero-split-view-readerBUse with care1,02326 May 2026
See all 3 and how they differ →

No forks listed.

The developer's response

The developer hasn't responded. Developers can reply here, and their reply sits next to our findings.I'm the developer

Ratings and reviews

What people who use it say. This is separate from the grade, which is what the code does, and never changes it.

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