diff --git a/Zotero/Controllers/AnnotationConverter.swift b/Zotero/Controllers/AnnotationConverter.swift
index 00759129b..f35ce2aa4 100644
--- a/Zotero/Controllers/AnnotationConverter.swift
+++ b/Zotero/Controllers/AnnotationConverter.swift
@@ -112,7 +112,7 @@ struct AnnotationConverter {
             paths = []
         } else if let annotation = annotation as? PSPDFKit.FreeTextAnnotation {
             type = .freeText
-            let roundedFontSize = round(annotation.fontSize * 2) / 2
+            let roundedFontSize = AnnotationsConfig.roundFreeTextAnnotationFontSize(annotation.fontSize)
             fontSize = roundedFontSize
             rotation = annotation.rotation
             paths = []
diff --git a/Zotero/Models/AnnotationsConfig.swift b/Zotero/Models/AnnotationsConfig.swift
index d9fdbd528..754f608f5 100644
--- a/Zotero/Models/AnnotationsConfig.swift
+++ b/Zotero/Models/AnnotationsConfig.swift
@@ -29,6 +29,13 @@ struct AnnotationsConfig {
     static let keyKey = "Zotero:Key"
     // Line width of image annotation in PDF document.
     static let imageAnnotationLineWidth: CGFloat = 2
+    // Free text annotation font size minimum, maximum, increment and rounding
+    static let freeTextAnnotationFontSizeMinimum: CGFloat = 1
+    static let freeTextAnnotationFontSizeMaximum: CGFloat = 200
+    static let freeTextAnnotationFontSizeIncrement: CGFloat = 0.5
+    static func roundFreeTextAnnotationFontSize(_ fontSize: CGFloat) -> CGFloat {
+        round(fontSize * 2) / 2
+    }
     // Size of note annotation in PDF document.
     static let noteAnnotationSize: CGSize = CGSize(width: 22, height: 22)
     static let positionSizeLimit = 65000
diff --git a/Zotero/Scenes/Detail/Annotation Popover/Views/FontSizeView.swift b/Zotero/Scenes/Detail/Annotation Popover/Views/FontSizeView.swift
index 8b9670ddd..7d6c45025 100644
--- a/Zotero/Scenes/Detail/Annotation Popover/Views/FontSizeView.swift	
+++ b/Zotero/Scenes/Detail/Annotation Popover/Views/FontSizeView.swift	
@@ -78,9 +78,9 @@ final class FontSizeView: UIView {
     private func setup() {
         let stepper = UIStepper()
         stepper.isHidden = !stepperEnabled
-        stepper.stepValue = 0.5
-        stepper.minimumValue = 1
-        stepper.maximumValue = 200
+        stepper.stepValue = AnnotationsConfig.freeTextAnnotationFontSizeIncrement
+        stepper.minimumValue = AnnotationsConfig.freeTextAnnotationFontSizeMinimum
+        stepper.maximumValue = AnnotationsConfig.freeTextAnnotationFontSizeMaximum
         stepper.rx.controlEvent(.valueChanged)
             .observe(on: MainScheduler.instance)
             .subscribe(onNext: { [weak self] _ in
diff --git a/Zotero/Scenes/Detail/PDF/ViewModels/PDFReaderActionHandler.swift b/Zotero/Scenes/Detail/PDF/ViewModels/PDFReaderActionHandler.swift
index 5b113ff19..0463b8de8 100644
--- a/Zotero/Scenes/Detail/PDF/ViewModels/PDFReaderActionHandler.swift
+++ b/Zotero/Scenes/Detail/PDF/ViewModels/PDFReaderActionHandler.swift
@@ -1675,7 +1675,7 @@ final class PDFReaderActionHandler: ViewModelActionHandler, BackgroundDbProcessi
             }
 
             if editFontSize {
-                let roundedFontSize = round(textAnnotation.fontSize * 2) / 2
+                let roundedFontSize = AnnotationsConfig.roundFreeTextAnnotationFontSize(textAnnotation.fontSize)
                 requests.append(EditAnnotationFontSizeDbRequest(key: key, libraryId: viewModel.state.library.identifier, size: roundedFontSize))
             }
         } else if hasChanges([.boundingBox, .rects]), let rects = AnnotationConverter.rects(from: annotation) {