Hands-on test data

Raw measurements behind the review. Taken on 2 October 2026 with Second Bookmark Bar 3.1.131, Bookmark Sidebar 2.5.7, Edge 154 and Chrome 154.

Screen space

• No extension, 1920x1080 and 1366x768
• Second Bookmark Bar, 1920x1080 and 1366x768
• Bookmark Sidebar, 1920x1080 and 1366x768
• Chrome side panel, 1920x1080 and 1366x768

Page speed

• Summary table
• Round 1: none, SBB, Bookmark Sidebar
• Round 2: none, SBB, Bookmark Sidebar

Memory

• Summary table and method
• Per-run totals and per-process breakdown, after a browser restart

My first memory run was unfair to Second Bookmark Bar, so I do not publish it. The summary explains the correction.