# Dev Toolkit

> Developer toolbox in one panel: override page fonts, force RTL or LTR, mask tab titles and icons while screen sharing, read JSON responses as a searchable tree, repair garbled text, and clear cache or cookies per site.

Canonical page: [https://chrome-stats.com/d/dev-toolkit?hl=fr](https://chrome-stats.com/d/dev-toolkit?hl=fr)

## Overview

- **ID:** `dev-toolkit`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Ali Houshyari Pour
- **Category:** web-development,privacy-security,appearance
- **Daily users:** 2
- **Weekly downloads:** 2
- **Version:** 1.0.0
- **Last updated:** 2026-08-28
- **First published:** 2026-08-25
- **Size:** 281 KB
- **Data as of:** 2026-09-05
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/dev-toolkit/)
- **Website:** [https://alihoushyaripour.com/](https://alihoushyaripour.com/)
- **Privacy policy:** [https://addons.mozilla.org/firefox/addon/dev-toolkit/privacy/](https://addons.mozilla.org/firefox/addon/dev-toolkit/privacy/)

## Description

Dev Toolkit collects the small utilities you keep reaching for into a single panel, so you stop installing six add-ons to get them.

<strong>Web font override</strong> — replace the font on any page, while leaving code blocks and icon fonts untouched. Adjustable base size and line height.

<strong>Text direction</strong> — force a page right-to-left or left-to-right, or restrict it to input fields only when you do not want to disturb the layout.

<strong>Tab masking</strong> — swap the title and icon of your tabs for a neutral placeholder before you share your screen, so a recording or a passer-by does not reveal what you are reading. One keyboard shortcut toggles it, and you can mask every tab or only the background ones.

<strong>JSON viewer</strong> — JSON responses become a collapsible tree with search and match highlighting, jq-style path copying, a raw view, key sorting and a download button. Large arrays are chunked so huge payloads stay responsive.

<strong>Garbled text repair</strong> — restores text that was stored as UTF-8 but read back with a single-byte encoding, the classic symptom of a mismatched database collation: <code>علی</code> becomes readable again. Display only; nothing is ever written back to your data.

<strong>Cache and cookie tools</strong> — clear one site's cookies, local storage, IndexedDB, cache storage and service workers, or clear the whole browser by time range. List, copy and export cookies as JSON, a Cookie-Editor file, a <code>cookies.txt</code> for curl, or a raw Cookie header.

Available in English and Persian, with a language switch inside the panel and automatic right-to-left layout.

No analytics, no telemetry, no network requests of any kind. Every setting stays on your device.

## Rankings

- #63,761 — Overall
- #225 — override

## Permissions and access

### Permissions

- `storage`
- `activeTab`
- `tabs`
- `cookies`
- `browsingData`
- `scripting`
- `downloads`
- `clipboardWrite`

### Host permissions

- `<all_urls>`

### Content script matches

- `<all_urls>`

## Safety

- **Risk impact:** High risk impact
- **Risk likelihood:** High 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 was recently updated in the past month. New updates 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).

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Source: [Chrome-Stats](https://chrome-stats.com/d/dev-toolkit?hl=fr)