# Testfully

> Testfully's Firefox extension

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

## Overview

- **ID:** `testfully`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** testfully.io
- **Category:** web-development
- **Daily users:** 4
- **Version:** 1.0.0
- **Last updated:** 2022-09-12
- **First published:** 2022-09-11
- **Size:** 20 KB
- **Data as of:** 2026-09-07
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/testfully/)
- **Website:** [https://testfully.io](https://testfully.io/)

## Description

Testfully is a powerful tool for testing APIs. With the Testfully Firefox extension, you can easily bypass CORS errors and seamlessly use Testfully for API testing and debugging in your browser.

## Rankings

- #48,601 — Overall

## Permissions and access

### Permissions

- `webRequest`
- `webRequestBlocking`
- `<all_urls>`

## Safety

- **Risk impact:** Moderate risk impact
- **Risk likelihood:** Moderate risk likelihood

### Analysis details

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

## Similar extensions and apps

- [Restfox CORS Helper](https://chrome-stats.com/d/restfox-cors-helper) — 172 users, 5.00 / 5
- [CORS Everywhere](https://chrome-stats.com/d/cors-everywhere) — 20,823 users, 4.13 / 5
- [CORS Unlocker](https://chrome-stats.com/d/cors-unlocker) — 19 users
- [Corsify](https://chrome-stats.com/d/corsify) — 1 users, 3.00 / 5
- [CORS Unbound](https://chrome-stats.com/d/cors-unbound) — 20 users
- [Corser](https://chrome-stats.com/d/corser) — 31 users, 3.00 / 5
- [CORS Unblock](https://chrome-stats.com/d/cors-unblock) — 6,345 users, 3.74 / 5
- [Hoppscotch Extension for Firefox](https://chrome-stats.com/d/hoppscotch) — 3,454 users, 4.78 / 5
- [Safe CORS](https://chrome-stats.com/d/safe-cors) — 11 users
- [I know what I'm doing](https://chrome-stats.com/d/i-know-what-i-m-doing)
- [A test extension](https://chrome-stats.com/d/a-test-extension)
- [Moesif Origin & CORS Changer](https://chrome-stats.com/d/moesif-origin-cors-changer1) — 491 users, 3.00 / 5

---

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