Zotero Plugins Atlas
Plugins / Reading & PDFs

Set HorizontalScroll

by qiwei-ma · github.com/qiwei-ma/zotero-pdf-setHorizontal

A lightweight Zotero plugin , only for setting your PDF view as defaults. Such as hand tool, scroll mode, and zoom mode.

Reading & PDFs
View source
Downloads a .xpi file (0.05 MB). In Zotero, open Tools → Plugins and install it from the file.
StarsPeople who starred the repository on GitHub: a rough measure of interest.
18
DownloadsAll-time downloads of its release files from GitHub. Installs from elsewhere aren't counted.
6,454
ContributorsPeople who have committed code to the repository.
2
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 v0.1.2, released 21 May 2026Code checked · tested installed in Zotero 9.0.6 on 27 Sep 2026
Doesn't work with the current Zotero (10)Works with Zotero 7, 8, 9.
Another plugin uses the same IDOne other plugin shares 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, uploaded by the project's automated GitHub buildThe release file was uploaded by the project's automated GitHub build. We haven't yet rebuilt it from the source to compare.LowLow concern: normal for plugins that do this job. Listed so you know.
Updates
Updates come from this project's GitHub repositoryThe update address offers this version
Where your data goesNo web requests foundLowLow concern: normal for plugins that do this job. Listed so you know.
No further detail for this area yet.
Powerful capabilitiesA zotero:// link (a web page can open one) can make it install add-ons without asking you, and 2 moreMediumMedium concern: worth reading before you install. One medium finding makes the grade B.
A zotero:// link (a web page can open one) can make it install add-ons without asking you (from zotero-plugin-toolkit)mediumMedium concern: worth reading before you install.A zotero:// link can make it run code if you approve a prompt (from zotero-plugin-toolkit)mediumMedium concern: worth reading before you install.Works with files on your computerlowLow concern.
Where we found it
A zotero:// link (a web page can open one) can make it install add-o…content/scripts/pdfsethorizontalscroll.js · line 154

zotero://plugin

Services.io.getProtocolHandler("zotero").wrappedJSObject._extensions["zotero://plugin"] = pluginBridgeExtension;
A zotero:// link can make it run code if you approve a promptcontent/scripts/pdfsethorizontalscroll.js · line 100

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 7, 8, 9 · not 10, 11 betaDoesn't work with the current Zotero (10)MediumMedium concern: worth reading before you install. One medium finding makes the grade B.
Zotero 7 ✓ worksZotero 8 ✓ worksZotero 9 ✓ worksZotero 10 ✗ doesn't workZotero 11 beta ✗ doesn't work
What you'll needZotero 7, 8, 9Detected automatically from its code
No further detail for this area yet.
MaintenanceActive · last release 21 May 20262 contributors
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

Description coming soon. We haven't written a summary yet. The line above is the developer's own description; the developer's README is linked above.

What you'll need

Detected automatically
  • Zotero 7, 8, 9Not working with Zotero 10

Where your data goes

We found: no web requests found.

Forks and alternatives

1 other plugin uses the same ID as this one. Every Zotero plugin carries an ID, a name tag Zotero uses to tell plugins apart. These 2 plugins carry the same one, because people copied Set HorizontalScroll 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.
Set HorizontalScroll · this pluginqiwei-ma/zotero-pdf-setHorizontalBUse with care6,45421 May 2026
See all 2 and how they differ →

1 listed fork.

Plugins for the same job
  • NoteroReading & PDFs · Files, sync & backupA+Recommended, tested in Zotero
  • Bionic for ZoteroReading & PDFsA+Recommended, tested in Zotero
  • ZotLitReading & PDFs · Citing & writingA+Recommended, tested in Zotero
  • Zotero Focused ModeReading & PDFsA+Recommended, tested in Zotero

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
Install Set HorizontalScroll
BUse with care
Before you install: 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.Read the finding
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