# KOCT

> Koha Offline Circulation Tool

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

## Overview

- **ID:** `koct`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Kivutar
- **Category:** appearance,other
- **Daily users:** 812
- **Weekly downloads:** 53
- **Rating:** 4.45 / 5 (11 ratings)
- **Version:** 0.4.21
- **Last updated:** 2025-03-31
- **First published:** 2009-09-17
- **Size:** 46 KB
- **Data as of:** 2026-09-09
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/koct/)

## Description

KOCT (Koha Offline Circulation Tool) is a powerful Chrome extension designed for librarians to efficiently manage library circulation even when offline. It enables users to perform check-in and check-out operations without internet connectivity and later sync all transactions with the Koha integrated library system. The tool supports multiple languages including Czech, English, French, German, Italian, and Spanish, making it versatile for diverse library environments.

Note that KOCT does not operate in private browsing mode, ensuring optimal functionality within standard browser sessions. This extension enhances library workflows by maintaining seamless circulation operations regardless of connectivity issues, offering a reliable solution for offline library management.

## Rankings

- #3,704 — Overall
- #39 — offline
- #142 — french

## Permissions and access

### Permissions

- `tabs`
- `storage`
- `<all_urls>`
- `downloads`

## Safety

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

### Analysis details

- Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
- 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).

## Review summary

Users praise KOCT for its usefulness and ability to improve daily tasks, especially in offline scenarios. However, recurring problems include compatibility issues with certain Firefox versions leading to functional failures, broken export functionality due to programming errors, and limited language support. Suggestions for user interface improvements and better configuration accessibility were also noted.

### Pros

- The add-on is considered very useful and can significantly improve workflow, described as a tool that can 'save your day'.
- It is helpful especially in situations with limited or no internet access.
- The functionality is generally appreciated by users who find the plugin nice and beneficial.

### Cons

- Compatibility issues with Firefox version 57.0.2 and some others were reported, causing malfunctions such as the barcode reading process stopping and checkout button being unresponsive.
- The 'Export data' function is broken, causing JavaScript errors related to the usage of a deprecated 'toLocaleFormat' function.
- Lack of language options and localization is a limitation; some users requested language change settings and additional translations such as Chinese.

## Similar extensions and apps

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