CSV Viewer - zero-permissions no-network

Name: CSV Viewer - zero-permissions no-network
Author: Chris

By: Chris

Securely view CSV files as formatted tables. Drag and drop or browse -- all processing happens locally with ZERO permissions and ZERO network calls. I built this to show CSV files in my browser tab without risking exposing the data to unknown risk

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Install

Features & Capabilities

A lightweight CSV viewer that runs entirely in your browser. Click the toolbar icon, drop a CSV file (or click to browse), and instantly see your data as a clean, readable table.

How it works

Click the CSV Viewer icon in your toolbar
Drag a CSV file onto the page, or click "Choose File"
Your CSV is parsed and displayed as a styled table

Security

Requests zero browser permissions
Makes no network requests of any kind
No external scripts, CDNs, or third-party libraries
No data collection, no tracking, no storage
Files are read locally using the browser's FileReader API and never leave your machine
All cell data rendered via textContent to prevent injection

Features

Drag-and-drop or file picker
First row displayed as a styled header
Alternating row colors and hover highlighting
Horizontal scroll for wide tables
Shows up to 200 rows with a count notice for larger files
Tab title set to the filename
"Open another file" button to quickly switch files

User Growth & Download Statistics

Add-on

By:

Chris

Daily users:

Version:

3.3 Last updated: 2026-03-07

Version code:

6169996

Creation date:

2026-03-04

Risk:

Size:

19.94KB

Email:

pe*****@gmail.com

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-20

Compare stats and ranking:

Ranking

# 123,393 ▲ 2,654

Other rankings

#36 in permissions keyword 5 #56 in permission keyword 11 #101 in network keyword 36 ▼ 3#223 in mission keyword 7 ▼ 3

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.

Developed by:

Chris

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/csv-viewer-zero-permissions/

Email:

pe*****@gmail.com

Is CSV Viewer - zero-permissions no-network Safe?

Risk impact

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

CSV Viewer - zero-permissions no-network does not require any sensitive permissions.

Risk impact analysis details

Low This permission has no access or impact on the user's system or data, thus carrying no risk.

Risk likelihood

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

CSV Viewer - zero-permissions no-network may not be trust-worthy. Avoid installing if possible unless you really trust this publisher.

Risk likelihood analysis details

High This extension has low user count. Unpopular extensions may not be stable or safe.
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Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****