13,716 extensions found in Web Development

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Image Map Editor
Check and editing the image maps inside the web page with magnifying glass.
Rated 3.5 out of 5
Heinz-Jürgen Boms
199 users
Free Backlink Checker by LRT
Free backlink checker to verify all links on a page. Finds broken, unverified, no-follow, follow, internal, external links.
Rated 4 out of 5
LinkResearchTools GmbH
198 users
Switch Direction
Switch Direction in edits, useful for mixed RTL and LTR texts editing.
Rated 4.7 out of 5
ebraminio
197 users
HTTP Indicator
Indicator for HTTP/2, QUIC and HTTP/3
Rated 4 out of 5
pd4d10
196 users
GitHub 中文汉化插件
GitHub 中文汉化插件用于将 GitHub 页面中的菜单、按钮、标题、提示语等界面文本进行本地化为简体中文，提升中文用户的浏览与协作效率。
Rated 5 out of 5
MaydayV
196 users
Viewport
Displays the current viewport size when resizing the browser window.
Rated 3 out of 5
Kameron
195 users
Canvas Capture
Capture video from canvas elements
Rated 4.4 out of 5
Chase
194 users
Easy DNS lookup
Utility to do DNS lookups directly to DNS APIs and display the response in the addon.
Rated 4 out of 5
wesinator
194 users
WaybackURL
Fetch all the URLs that the Wayback Machine knows about for a domain
There are no ratings yet
Hossein Shourabi
193 users
WhatsApp Message Scheduler
Schedule messages in WhatsApp Web. Create messages to send later, set delivery time or delay, and manage all pending scheduled messages in a simple interface. Works directly inside WhatsApp Web.
Rated 5 out of 5
Pau
193 users
single-spa Inspector
A devtools panel for single-spa applications.
There are no ratings yet
single spa inspector dev
193 users
Color Picker
Pick up amazing color on one click
Rated 1.8 out of 5
Lokdien
192 users
Disable WebP Images
Disables WebP images by removing image/webp from Accept header
Rated 1 out of 5
John Galt
192 users
APIsec BOLT
Discover APIs from browser traffic and auto-generate OpenAPI specs.
Rated 5 out of 5
APIsec.ai
192 users
Twitter Video Downloader MP3 MP4
New Firefox Extension Twitter Video Downloader MP3 MP4 let you easy download any content from Twitter in few steps. Get any Video from Twitter and Download it in MP3, MP4, M4A and other best quality formats. Download video from Twitter TT with FF.
Rated 1.5 out of 5
Youzik YouTube MP3 Converter
191 users
Reveal Password
A simple utility to see auto-filled saved passwords with double click on any page. Double click the password and it should show as a plain text.
Rated 3.5 out of 5
NightSurfer
191 users
FontFinder
A powerful font finder and identifier that recognises fonts on any webpage, displays detailed typography info, and allows on-the-fly modifications.
Rated 5 out of 5
Software Best Decisions
190 users
Skip Ads
Skip all annoying ads
Rated 3.9 out of 5
I Am Your Fear
189 users
MediaInspector
A tool to inspect the binary content of any <video> or <audio> element.
Rated 3.4 out of 5
vdh
189 users
Palette Creator
Creates a color palette from any image. Just right-click on the image and select the 'Palette Creator' option.
Rated 4.6 out of 5
Daniel Perez Alvarez
188 users
Youtube Shorts Auto Play
Automatically plays the next video when you finish a youtube short
Rated 1 out of 5
Timbo59
188 users
DESIGN.md Generator - TypeUI
Firefox extension to extract page styles and generate DESIGN.md or SKILL.md files and use it with Google Stitch, Claude, Codex, and Cursor. This markdown file is based on the open-source TypeUI configuration.
Rated 5 out of 5
Zoltán Szőgyényi
188 users
CoreTax PDF Downloader
Quickly download multiple PDFs from CoreTax portal using official API. No page reload required.
There are no ratings yet
Mabaega
187 users
Show-HTTP-Headers
Show HTTP headers in each tab.
Rated 4.7 out of 5
Warren Bank
186 users
Media Extractor Pro
Extracts all .mp4 files from a webpage.
There are no ratings yet
Alice Sn0w
185 users