Drop CSV Viewer

Name: Drop CSV Viewer
Author: soyasis

Drag a CSV file onto any page to open it as a clean table in a new tab. Filter, sort, resize and export. 100% local and open source.

Overview

Firefox Add-ons Store

Daily users

Data as of 2026-07-26

Version:

1.4.1

Last updated: 2026-07-02

Features & Capabilities

Read local CSV and TSV files without links or a spreadsheet app.

Just drop it in Drag a .csv or .tsv onto any open Firefox tab and it opens as a clean table in a new tab. No URL, no upload, no "open file" dialog, no Excel.

Features

Type to filter across all columns
Click the ▼ next to a column to sort (numbers sort as numbers)
See live Sum, Average, Min, Max, Count and Unique
Copy any selection with ⌘/Ctrl-C to paste straight into Sheets or Excel
Drag a column's right edge to resize; sticky header and first column
Download the current view (filter + sort applied) back to CSV

Private by design

100% local: no network requests, no analytics, no data collection
Open source (MIT) — read every line on GitHub
Light & dark, follows your system theme (or toggle it)

User Growth & Download Statistics

Add-on

By:

soyasis

Daily users:

Version:

1.4.1 Last updated: 2026-07-02

Version code:

6335260

Creation date:

2026-06-16

Risk:

High risk impact High risk likelihood

Permissions:

webNavigation
file:///*
*://*/*

Content scripts matches:

Size:

21.93KB

URLs:

Website

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-07-26

Compare stats and ranking:

Ranking

# 139,669 ▲ 1,620

Other rankings

#219 in spreadsheet keyword 11 ▼ 7#233 in drop keyword 16 ▼ 2

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:

soyasis

Firefox Add-ons Store

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

Website:

https://github.com/soyasis/drop-csv-viewer

Permission Change History

2026-07-03: Version 1.4.0 → 1.4.1

Remove Permissions: tabs

Is Drop CSV Viewer 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.

Drop CSV Viewer requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.

Risk impact analysis details

Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
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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.

Drop CSV Viewer is recently added, and hasn't been around long enough for us to gather enough data to accurately assess its risk level.

Risk likelihood analysis details

High This extension was recently updated in the past month. New updates may not be stable or safe.
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