Jelly Party
Watch videos with your friends — in sync! Support Netflix, Disney+, Youtube, Vimeo, Amazon Prime Video & many more! Free & Open Source.
583 users
FamilySearch Center Premium Content
Allows access to premium websites and other content from a FamilySearch Center operated by The Church of Jesus Christ of Latter-day Saints.
583 users
Save Tab Image
Save Tab Imageはタブで展開中の画像を一括で保存するアドオンです。 インストールするとツールバー上にSave Tab Imageのボタンを追加します。 ボタンをクリックするとタブ上で開いている画像ファイル（jpg,jpeg,png,gif,bmp）をfirefoxのデフォルトダウンロードフォルダに一括で保存することが出来ます。 ダウンロード時に画像を開いているタブをすべて閉じます。
582 users
Simple Lorem Ipsum
This extension lets you insert Lorem Ipsum anywhere on your page with an edit mode to modify any content on your page.
580 users
PDFfiller: Edit, Fill, Sign any PDF document
The PDFfiller Add-on allows you to convert any webpage to a PDF with a single click and instantly edit it online. Easily transform PDFs from search results into fillable PDF forms and send them to be signed and completed.
573 users
YouLoop - Repeat video/audio endless on YouTube
Repeat video/audio endless on YouTube. Furthermore a partition loop function is enable.(for HTML5) -- Wiederholt Video/Audio endlos auf YouTube. Des Weiteren gibt es die Möglichkeit, nur einen bestimmten Ausschnitt endlos zu wiederholen.(für HTML5)
572 users
![[Dark Theme] - Native Dark](https://addons.mozilla.org/user-media/addon_icons/938/938596-64.png?modified=37f40c82)
[Dark Theme] - Native Dark
Native Dark allows for customization to match your system accent colors. Read the README file for advanced instructions. https://github.com/spikespaz/firefox-nativedark/blob/legacy/README.md
572 users
ChromeLogger
Parses and displays messages from X-ChromeLogger-Data and X-ChromePHP-Data headers in DevTools Web Console facilitating server-side debugging via the Chrome Logger protocol ( https://craig.is/writing/chrome-logger/ ).
572 users
Bazzacuda Image Saver Plus^2
One-click, or two-clicks, batch saving of images opened in tabs. This extension will cycle through all open tabs. If tab contains a single image, the image will be saved to disk and, optionally, the tab will be closed.
569 users
Unit Converter
Simple and powerful toolbar popup with unit conversion. Supports Area, Length, Mass/Weight, Pressure, Force, Speed, Temperature, Time and Volume conversions. Convert imperial to metric and vice versa.
569 users
日本語用コンテキスト検索
選択したテキストをコンテキストメニューから検索します 検索エンジンに渡す文字列のコードをUTF-8/Shift_JIS/EUC-JP/ISO-2022-JPの中から選べます
568 users
Paste Enabler
Addon that allows to paste into a web page, even if it is blocked. When you are on a web page that prohibits it, click on the extension icon. It will force the possibility of pasting.
567 users
Single html downloader
Download as a single html file for the current page with images and styles.
567 users
Update Bookmark
This add-on allows to replace or update an existing bookmark title and/or URL with a minimal click count..
566 users
TWP - Translate Web Pages (Custom)
Translate your page in real time using Google or Yandex. This extension is a fork of TWP - Translate Web Pages.
564 users
Download with Download Accelerator Plus
when activated, interrupts the built-in download manager to direct links to DAP
563 users
