# TransferClock

> Estimate file transfer time from a file size and connection speed, then compare common speed scenarios.

Canonical page: [https://chrome-stats.com/d/transferclock](https://chrome-stats.com/d/transferclock)

## Overview

- **ID:** `transferclock`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** sarah
- **Category:** other
- **Version:** 1.0.0
- **Last updated:** 2026-08-01
- **First published:** 2026-07-29
- **Size:** 18 KB
- **Data as of:** 2026-09-13
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/transferclock/)
- **Website:** [https://paypg555.com/](https://paypg555.com/)

## Description

Estimate how long a file transfer will take from values you enter: file size, file count, connection speed, and expected transfer overhead. TransferClock performs a local calculation and compares the same data amount across common connection speeds.

## Rankings

- #134,068 — Overall
- #38 — transfer

## Permissions and access

### Permissions

- `clipboardWrite`

## Safety

- **Risk impact:** Low risk impact
- **Risk likelihood:** High risk likelihood

### Analysis details

- Allows reading and modifying clipboard content, which can be sensitive, posing a moderate privacy risk.
- This extension has low user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

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Source: [Chrome-Stats](https://chrome-stats.com/d/transferclock)