I'm a heavy ChatGPT user. Over time, my conversation list became completely unmanageable — useful conclusions buried in long threads, no way to navigate back to a specific point, action items scattered across dozens of replies with no one to collect them.
So my friend and I built MindMarks — a Chrome extension that injects directly into ChatGPT. Three core things:
- Folder + tag organization for conversations
- A right sidebar that auto-generates summaries, key takeaways, and action items
- Jump navigation inside long conversations — click a section and land there instantly
Prompt optimizer and bulk export (MD/JSON/TXT) are also in there. Fully free for now.
What we got wrong along the way
Mistake 1: Shipping everything at once
Our first version tried to do too much. Folders, tags, recap, prompt optimizer, export — all in v1. The onboarding was a mess. Users installed it and had no idea where to start.
We had to strip it back to one clear first action: something useful that happens within 30 seconds of installing. That's when retention improved.
Mistake 2: Misjudging the prompt optimizer
We assumed everyone would love a one-click prompt optimizer. Turns out there's a prerequisite: users need to already know their prompt is bad before they'll reach for an optimization tool. That bar was higher than we expected, and we spent a lot of time rethinking the onboarding around it.
Mistake 3: Scope creep on platform support
We originally planned to support Claude and Gemini too. Couldn't keep up with the engineering. We're now honest about it — ChatGPT only for now, others on the roadmap. Should've made that call earlier instead of letting it drag on.
## Where we are now
The extension is live on the Chrome Web Store and we're in early user feedback mode. Still a lot to improve, but the core loop is working.
If you're a heavy ChatGPT user dealing with the same chaos, give it a try 👇
Our official site :https://mindmarks.io/
Chrome store link:https://chromewebstore.google.com/detail/mindmarks/jmcppalmljaaeleknoheihgfdhihcdem
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**Any feedback — what works, what's confusing, what's missing — would mean a lot. Comments or DMs both welcome 🙏
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