Show HN: I built a tool to sync localStorage between devices
htmlsync.ioAt my day job, we have a daily async stand-up. We have to message a slack bot how many hours we have worked on a given task that day and overall.
The format is:
> Task: "Task Name" | Worked: 5h Total: 16h > Description: Finished implementation of feature.
I don't complain. Most fully remote jobs come with a version of this, but doing it manually got tedious. So, I needed a simple app that would track this.
I am not usually a fan of "vibe coded" apps, but this was an ideal candidate for it, since it's not production code. Most LLMs solve the problem by creating a single HTML file with forms that save data to localStorage. This was perfect for me - no hosting, no DB, no backend. Just 15 mins of prompting.
One day I was outside, just with my phone, and of course I couldn't use the app. I thought "how hard can it be to synchronize localStorage data across devices?". Turns out, it's not that hard, if you are ready to build a whole platform around it.
https://htmlsync.io does just that. You upload your HTML app that works with localStorage and get a subdomain for it. The tool automatically synchronizes your changes across devices. You can create private and public apps, can decide which keys to synchronize by using the "no_sync_" prefix. The "public-hidden" CSS class can be used to hide UI elements in public view. You also get a subdomain for your profile where all your apps are listed for easy access.
I hope you find this as useful as I did.
I'd also appreciate your feedback if you end up using it.
Is there a good demo that shows ... how this looks / works?
The site mentions a video, but I can't find it.
There's a button on the homepage "Watch How It Works", does that not open for you?
Here's a link to the video - https://www.youtube.com/watch?v=PbKFCEUy2ps.
Watch button works, I just missed it and went to the FAQ that mentions the video there, but the FAQ doesn't link to it. My bad, TY.
No problem. You can use the upload form on the homepage as well, it doesn't require a sign up.
cool idea, would be awesome to see a demo link
You can create a demo directly in the home page. No signup required.
You don't even need to have a file, you can use a template.