Browser extensions starting with O

Adds regional flags and score ranking details to osu! profiles and related pages.

OA.mg reads the active page for a DOI when clicked and opens the matching OA.mg work page.

Ogame Infinity sends user-enabled cloud sync and PTRE integration data to getpantry.cloud and ptre.chez.gg.

Omni renders tab, bookmark, and history details into every page's DOM when its command menu is used.

OneScholar writes saved settings, including API keys, into page-accessible storage and form fields during backup/export.

Online Dictionary Helper fetches selected dictionary scripts from GitHub or custom URLs and runs them in its sandbox.

Online PDF Converter injects a floating PDF tools button and extension iframe into every visited site by default.

Online Weather Forecast sends typed new-tab search queries to transitschedules.net before search submission.

Open in IE downloads a native client binary from GitHub without checksum or signature verification.

Opens PDF files in Adobe Reader from the browser right-click menu.

Open in VLC Media Player™ uses a native messaging host to spawn a local application with the right-clicked URL as an argument.

OpenQuiz - YT/Netflix Shadowing & Translate sends selected page text to Google Translate for automatic translation.

OpenWAX loads status-icon images from goonoo.github.io when you run an accessibility audit.

Ouriginal for Google Classroom transmits Google OAuth tokens and student profile data to its backend for plagiarism analysis.

Browsing Protection by WithSecure forwards every visited URL to a locally installed WithSecure security app for reputation scanning.

Open in IE exposes a shared DOM channel that any webpage can use to open an attacker-chosen URL in Internet Explorer.

Amazon Online Arbitrage, Wholesale, and Dropshipping sends parsed Amazon product metadata to amzscout.net.

OKIOCAM Time-Lapse makes uploaded webcam time-lapse files readable to anyone with the Google Drive link.

CROSSx lets any HTTPS page switch the wallet's active chain through its injected page bridge.

OZONBIGSELL modifies Ozon seller analytics pages to return Premium Plus access and synthetic analytics data.

Obsidian Clipper sends selected page content, the page title, and URL to jplattel.github.io when you clip a page.

Official Card Counter Trello with Totalizer redirects visits to shopping sites through affiliate links.

Offline QR Code Generator sends the active tab URL to QR-shortener endpoints when making a code by default.

One-Click Video Downloader sends the active tab URL to its video lookup API when the popup checks for downloadable video.

Online AntiVirus Protection sends visited page URLs and referrers to analytics.chromeapps.site with a persistent UUID.

Online Search sends typed new-tab search terms to onlinesearchtool.org for suggestions and search.

Open Two-Factor Authenticator stores TOTP secrets in sync storage using password-hash AES encryption.

Open bookmarks in a new tab lets its bookmark proxy page redirect the current tab to a URL chosen in the page address.

Open in IE™ sends the current URL to a user-configured executable via a native host that evaluates a child_process spawn script.

Open with VLC opens the current page or selected media URL through the local vlc:// protocol handler.

Open-Deck sends draft X post text to opd.kwdev-sys.com when users click its text review button.

OpenAI Redirector reads corporate device and user identity via a native messaging helper and sends it to OpenAI's own analytics backend.

OpenMask lets a page supply the dApp origin used for wallet authorization checks.

OpenTabs sends new-tab search terms and its click_id cookie to p.opentabs.org.

OptimAI forwards user-approved X/Twitter cookies and OptimAI tokens to its local native host.

Ostendo sends YouTube feature-use events with a persistent extension client ID to Google Analytics.

Outliner CSS loads a Google-hosted font stylesheet when its popup opens.

Outliner re-fetches the current page and replaces it with cleaned HTML when you click it or enable auto mode.

Overprice sends page URLs to overprice.app and can return server-directed page content extractions.

oWebster Search sets owebsearch.com as the browser's default search provider and sends omnibox searches there.

OGame UI++ uploads shared OGame account and resource summary screenshots to Imgur.

ONTO Wallet forwards wallet RPC requests from page frames to the extension as the top-level site.

OnThisDayTab sends new-tab search terms and typed URLs to ext.iadispatcher.com.

One Piece Gear 5 Wallpaper sends your Chrome Top Sites URLs to Google's favicon service on each new tab.

Open Online Office Files opens selected document links through Google Docs Viewer or Microsoft Office Online Viewer.

Open in GIMP fetches and downloads a native-client installer from GitHub Releases without verifying its integrity.

Owl devtools lets any webpage ask the extension to open its Owl documentation tab.

OCR Text Recognition injects coupon HTML from api.pictureknow.com into Taobao, Tmall, and JD product pages.

OKKI io 外贸客户开发邮箱地址查找工具 scans eligible pages for email addresses and sends found emails with the page URL to Xiaoman.

Oink for Influencers mirrors saved API keys and account identifiers into page localStorage on Amazon-related pages.

Olhar Digital Ofertas collects configured checkout page values and sends them to ofertas.olhardigital.com.br.

One-Click Translate Selection opens Google Translate with the page text you choose from the context menu.

OneAI Extension lets any visited page trigger authenticated image uploads and OCR/edit workflows.

Online Subtitles renders locally selected subtitle text as HTML on every matched video page.