That API Timestamp Looks Like Nonsense — Here’s How I Read It in the Browser

#webdev #kepttools #javascript #api

If you work with APIs long enough, you eventually get a field like this:

1729000000

Is that seconds? Milliseconds? Yesterday? Next week?

I got tired of guessing — and tired of pasting values into random websites.

So I added a Unix timestamp converter to KeptTools. It runs in the browser. Nothing is uploaded.

What it does

Example:

Useful when you’re reading created_at, writing a test, or checking an expiry field.

Timestamps themselves aren’t always sensitive.

But the habit is: once you start pasting API payloads into third-party sites, it’s easy to paste a token next.

I want the everyday tools on the same page as the privacy promise: work happens on your device.

If timestamps are only one part of your day:

When an API returns epoch time, do you usually:

Tell me in the comments — I’m iterating based on real workflows.