SideJump: Fast Navigation for ChatGPT & Gemini

About

Stop scroll-hunting. Jump instantly.

Long ChatGPT/Gemini threads get messy fast: you lose your place, forget where a key prompt was, and waste minutes scrolling.

SideJump turns the right edge into a micro table-of-contents—ultra-compact markers aligned to your prompts. Click any marker to jump straight to the start of that prompt.

What you get

One-click navigation (to Prompt Start)
Jump to the exact prompt you need—always to the top, not the middle.

High-density, low-distraction UI
16px micro markers at 40% opacity by default; hover to brighten and slightly enlarge for easy clicking.

Editable labels (right-click)
Right-click a marker to rename it (e.g., “Debug”, “Code”, “Search”) and color-code it (6 preset colors).
Once customized, your label & color override the default numbering and green/blue alternation.

Private by design
Runs entirely on your device. Label metadata is stored locally in chrome.storage.local.
No accounts. No analytics. No ads.

Works where you work
Supports ChatGPT and Gemini web chat.

Who this is for

Developers navigating long debug threads and code iterations

Researchers/students tracking multi-step reasoning and experiments

Power users (support/product/analysts) living in deep, iterative chats

New-user tip (only once)

A lightweight toast appears on first use to show that right-click edits labels—then it disappears automatically and won’t keep popping up.

Permissions

Site access (chat.openai.com / chatgpt.com / gemini.google.com): render markers on the page

Storage: save your local labels and colors