OPFS Browser

Name: OPFS Browser
Rating: 5 (2 reviews)
Author: JCHU634

By: JCHU634

View and edit the OPFS file system in the debug tools.

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Features & Capabilities

OPFS Browser is a lightweight Chrome DevTools extension that lets developers inspect and manage the Origin Private File System (OPFS) used by web apps. From the OPFS Browser tab you can view directory trees, open files, download assets, and upload files back into OPFS — all without leaving DevTools.

Install and open DevTools → OPFS Browser to start. Try the OPFS test page (https://jchu634.github.io/opfs-test/) and view or contribute to the source on GitHub (https://github.com/jchu634/OPFS-Browser). Ideal for debugging file-backed web apps and quick OPFS content management.

User Growth & Download Statistics

Add-on Developer Tools Open Source Programming

By:

JCHU634

Daily users:

182 1

Rating:

5.00

(2)

Version:

1.0.3 Last updated: 2025-10-24

Version code:

6060546

Creation date:

2025-07-11

Risk:

Permissions:

activeTab

Content scripts matches:

<all_urls>

Size:

189.46KB

Email:

cr*****@gmail.com

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-18

Compare stats and ranking:

Ranking

# 8,391 ▲ 22

Other rankings

#43 in browser keyword 75

#46 in browser tab keyword 70 ▲ 1

#68 in chrome browser keyword 75 ▼ 1

#106 in grow keyword 9 ▼ 3

#111 in debug keyword 35

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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:

JCHU634

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/opfs-browser/

Email:

cr*****@gmail.com

Publisher Change History

2025-09-10: jc*****@gmail.com to cr*****@gmail.com

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Is OPFS Browser 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.

OPFS Browser requires a few sensitive permissions. 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.

OPFS Browser is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

Risk likelihood analysis details

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