# 99Tools: Web Developer Toolkit

> Power up your browser with 800+ professional developer, SEO, and text tools. The official 99Tools extension for fast and pro-grade productivity.

Canonical page: [https://chrome-stats.com/d/99tools-web-developer-toolkit](https://chrome-stats.com/d/99tools-web-developer-toolkit)

## Overview

- **ID:** `99tools-web-developer-toolkit`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** 99Tools
- **Category:** web-development
- **Daily users:** 1
- **Version:** 1.0
- **Last updated:** 2026-04-13
- **First published:** 2026-04-10
- **Size:** 32 KB
- **Data as of:** 2026-09-13
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/99tools-web-developer-toolkit/)
- **Website:** [https://99tools.net/](https://99tools.net/)

## Description

Unlock a massive library of 800+ professional tools directly from your browser toolbar. Designed for developers, SEO experts, and power users, the official 99Tools extension brings the full power of <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/5a23ac06405be900c68174a2453365434458a3db8b62a682565b1f8261156c03/http%3A//99Tools.net" rel="nofollow">99Tools.net</a> into a single, lightning-fast popup interface.

Key Feature Categories:
<ul><li>Developer Utilities: JSON Formatter, CSS Minifier, Base64 Encoder, JWT Debugger, and more.</li><li>SEO &amp; Webmaster Tools: Schema Generator, Keyword Density Checker, Redirect Tracker, and SERP Preview.</li><li>Text Manipulation: Case Converter, Word Counter, Remove Duplicate Lines, and Regex Tester.</li><li>Image Tools: WebP Converter, Image Resizer, and All Types Of Image Converters.</li></ul>
Why Choose 99Tools?
<ul><li>800+ Tools in One Place: The most comprehensive utility suite available on the store.</li><li>Privacy First: We do not collect, store, or transmit any personal data. Your workflow remains yours.</li><li>Professional Grade: Built by a team with over 10 years of experience in web development and SEO.</li><li>Lightning Fast: Instant search and easy "Favorites" tab for your most-used utilities.</li></ul>

## Rankings

- #90,046 — Overall
- #71 — developer tools
- #117 — developer

## Safety

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

### Analysis details

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

- [StackOnlineTools: All-in-One Online Tools](https://chrome-stats.com/d/stack-online-tools) — 1 users
- [Dev Toolkit — 440+ Developer Tools](https://chrome-stats.com/d/dev-toolkit-440-devtools) — 1 users
- [Online Tools by 10015.io](https://chrome-stats.com/d/online-tools-by-10015-io) — 929 users, 4.67 / 5
- [supertools-browser-toolkit](https://chrome-stats.com/d/supertools-browser-toolkit) — 3 users
- [Developer Toolkit](https://chrome-stats.com/d/%E5%BC%80%E5%8F%91%E8%80%85%E5%B7%A5%E5%85%B7%E5%8C%85) — 1 users
- [IO Tools - Developer Kit](https://chrome-stats.com/d/iotools-quick-access) — 8 users, 5.00 / 5
- [NexusLabs DevKit — 8+ Developer Tools](https://chrome-stats.com/d/nexuslabs-devkit-dev-tools)
- [SEO Tool Extension](https://chrome-stats.com/d/seo-tool-extension) — 113 users
- [SuperDev Pro](https://chrome-stats.com/d/superdevpro) — 48 users, 5.00 / 5
- [ZeroWebTools Companion](https://chrome-stats.com/d/zerowebtools-dev) — 1 users
- [DevSuite Pro](https://chrome-stats.com/d/devsuite-pro) — 12 users
- [A2Z Tools Extension](https://chrome-stats.com/d/a2z-tools-extension) — 10 users, 5.00 / 5

---

Source: [Chrome-Stats](https://chrome-stats.com/d/99tools-web-developer-toolkit)