Epoch Buddy: Unix Timestamp & Date Converter 作者: Shivam Sharma

Stop copying epoch timestamps to random websites. Epoch Buddy converts Unix
timestamps to human-readable dates instantly — right on any webpage or from the
popup. Seconds, milliseconds, dates, relative time — all covered. Fast and
private: all conversions happen locally; your inputs and results never leave
your browser.

WHY DEVELOPERS LOVE EPOCH BUDDY

Epoch timestamps are everywhere: server logs, monitoring dashboards, API
responses, database records, incident timelines, support tickets, and more.
Every time you see a 10-digit or 13-digit number and wonder "what time was
that?", Epoch Buddy gives you the answer in seconds — without leaving your tab
and without any external site.

FEATURES

1) Highlight-to-Convert on Any Webpage
Select any epoch timestamp on any website and get an instant inline popup showing:
- Epoch in seconds and milliseconds
- One row per timezone you have configured (Local, UTC, or any IANA zone you
pick in Settings — e.g. Asia/Kolkata, America/Los_Angeles)
- Each row includes the UTC offset and full timestamp
- Relative time (e.g. "3 hours ago" or "in 2 days")
- One-click copy buttons for each value
Long timezone labels wrap cleanly without breaking layout. Works on regular
text, input fields, and text areas across every website.

2) Popup Converter with Three Powerful Modes
Click the extension icon to open a clean, keyboard-friendly popup with three tabs.
Your current timezone and UTC offset are shown in the header at a glance.

A) Epoch to Date
Paste or type any Unix epoch value (seconds or milliseconds). The input
auto-fills with the current epoch and live-refreshes every second. Pause it
by clicking in — it resumes when you clear the field. A dedicated clock
button copies the current millisecond timestamp and fills the input field.
Output: Epoch (s), Epoch (ms), one row per configured timezone with its UTC
offset, and Relative time.

B) Date to Epoch
Enter a date and time using validated numeric fields (year, month, day, hour,
minute, second, millisecond) with per-field error highlighting. Pick any of
your configured timezones from the dropdown — not just Local and UTC. Time
presets — Start of Day, End of Day, or Current Time — sit inline with the
time fields for quick access.
Click "Convert ISO String" to flip the form into ISO 8601 mode: paste an ISO
string (e.g. 2026-03-19T12:00:00.000Z) and, when the string has no offset,
pick any of your configured zones as the fallback. Click "Enter Date
Manually" to flip back.
Output: Epoch (ms), Epoch (s), Relative time.

C) Relative to Epoch
Build a timestamp relative to "now". Choose Ago or From Now, then enter any
combination of Days, Hours, Minutes, Seconds, and Milliseconds. Overflow
values are automatically normalized (e.g. 90 minutes becomes 1h 30m). Smart
display shows only relevant units — no clutter.
Output: Epoch (s), Epoch (ms), one row per configured timezone, and Relative
time.

3) Conversion History
Your last 10 conversions are saved locally with quick copy buttons. Each entry
expands to show per-timezone rows for every zone you have configured. View them
anytime in the History section. Clear all history with one click. Nothing is
sent to any server — everything stays in your browser.

4) Timezone Settings
Open the gear icon in the header to manage your timezones. Add any IANA zone
(e.g. Europe/London, Asia/Tokyo, America/New_York), remove ones you do not
need, and drag-and-drop to reorder them. Your configured list drives every
output surface: the on-page popup, all three converter tabs, the history
entries, and the ISO fallback-timezone dropdown — so your preferred zones
always show up in your preferred order.

5) Dark Mode
Full dark mode support that follows your system preference, or set it manually
to Light, Dark, or System. The same polished, segmented theme picker is
available both in the header menu and in the Settings page. Applied across the
popup and the on-page conversion tooltip.

6) One-Click Copy
Every converted value comes with a copy button. Hover over any result row in the
on-page popup or click the copy icon in the extension popup. Copies to clipboard
instantly.

PRIVACY & PERFORMANCE

• All conversions run locally — no conversion inputs or results are sent anywhere
• Works fully offline: the converter itself never needs the network
• No accounts, no sign-ups, no logins
• Anonymous usage analytics (event counts only — no page content, no personal
  data, no conversion values) help us understand which features are used. You
  can disable analytics any time from the Settings screen. Details in the
  privacy policy.
• Lightweight and blazing fast
• Open source: https://github.com/ShivamS136/epoch-buddy

SUPPORTED INPUTS

• Unix epoch in seconds (10 digits, e.g. 1714000000)
• Unix epoch in milliseconds (13 digits, e.g. 1714000000000)
• Commas and underscores allowed (e.g. 1,714,000,000 or 1_714_000_000)
• ISO 8601 strings (e.g. 2026-03-19T12:00:00.000Z) in Date → Epoch ISO mode

PERFECT FOR

• Backend & frontend developers debugging timestamps
• DevOps & SRE teams during incident response
• Log analysis in observability and monitoring tools
• API development and testing
• QA engineers validating timestamp fields
• Database administrators inspecting epoch columns
• Anyone tired of Googling "epoch to date converter"

WHAT'S NEW IN v1.7.0

• New Settings → Analytics toggle: opt out of anonymous usage counts at
  any time. Only event names (like "epoch_to_date", "settings_opened")
  and a random install ID are ever sent — never your conversion values,
  the text you selected on a page, or any page content. See the privacy
  policy for the full list.
• First-time notice for existing users explains the anonymous analytics
  and how to disable it in one click.

WHAT'S NEW IN v1.6.0

• Settings page accessible from the header gear icon
• Add any IANA timezone to your list (Europe/London, Asia/Tokyo, and hundreds
  more), remove ones you do not need, and drag-and-drop to reorder
• Converter results, the on-page popup, and history entries all now show one
  row per configured timezone — no more being locked to Local and UTC
• ISO-string fallback timezone picker now uses your configured zones, so you
  can resolve offset-less ISO strings against any zone you use
• Theme picker in Settings matches the polished header menu (segmented
  control with Light / Dark / System icons)
• Long timezone labels wrap gracefully in both the on-page popup and the
  extension popup — no more layout distortion for names like
  "America/Argentina/Buenos_Aires"

WHAT'S NEW IN v1.5.0

• Popup feedback footer with a 5-star rating: tap “Rate Extension” / “Rate Add-on” to show stars,
  then choose a rating. Ratings 1–3 can open a pre-filled Google Form; 4–5 can open this browser’s
  store review page.
• “Hide the footer” after you rate; stored only on your device until you reinstall the extension.

WHAT'S NEW IN v1.4

• ISO 8601 string input mode in Date → Epoch (with fallback timezone selector)
• Copy current epoch (ms) button in Epoch → Date that also fills the input field
• Numeric input fields with per-field validation and error highlighting
• Automatic normalization of overflow values in Relative tab
• Time presets moved inline with time fields for a more compact layout
• Current timezone and UTC offset shown in the popup header
• Date fields require a value; time fields default to zero on blur

WHAT'S NEW IN v1.3

• Relative to Epoch converter tab
• Time presets (Start of Day, End of Day, Now)
• Dark mode with system preference detection
• Improved on-page popup positioning with smart arrows
• Conversion history with quick copy