Browser extensions starting with O

Online Security reads up to 100,000 URLs from your browser history and sends them to a third-party server on every tab navigation.

Enables cut, copy, and paste menus in Office on the web.

Interact with PDFs and digital documents using reading, annotation, commenting, and collaboration tools.

Okta Browser Plugin provides enterprise SSO and sends opt-in usage telemetry to Pendo analytics.

Content Server Browser Web Extension exposes two unscoped bridges that allow any webpage to invoke OpenText native desktop applications.

Converts open tabs into a restorable list to reduce the number of active browser tabs.

OKX Wallet sends every tab navigation URL to an OKX anti-phishing API along with persistent device fingerprint identifiers.

Save web pages, selections, highlights, and metadata to an Obsidian vault as Markdown.

OneLogin for Google Chrome fetches and executes JavaScript functions from app.onelogin.com on every website the user visits.

Opens a pasted list of website addresses in separate tabs.

Access, share, and sync OneDrive files across your devices and browser.

Replaces webpage fonts with OpenDyslexic to make online text easier to read.

Turns web searches and new tabs into support for ocean plastic cleanup projects.

Automates mouse clicks at the cursor or a preset location on supported web pages.

Records sound from your microphone, then lets you trim and save the recording to your computer.

Open multiple URLs at once in separate tabs or windows.

This extension sends selected online video and audio links to VLC media player.

This extension captures a selected screen region and runs OCR to extract text from it.

Octotree renders its account password field as plain text in its GitHub sidebar login form.

Toggle Odoo debug mode from the browser toolbar or keyboard shortcuts.

Omega Ad Blocker fetches remote rules that can inject scriptlets and CSS across websites.

Omnibug captures matching marketing-request URLs and POST data for tabs where its DevTools panel is open.

Open SEO Stats sends the active tab's host and SEO history to history.openadmintools.com when the popup opens.

Open incognito tab sends feedback messages and the active tab URL to Telegram.

Collects call, system, network, and headset diagnostics for cloud contact center monitoring.

OneTab sends saved tab domains to Google's favicon service when it renders tab icons in the OneTab interface.

Provides a collection of offline mini games and brain teasers playable without Wi‑Fi.

This extension changes the new Facebook layout to use older Facebook-style colors.

Redirects Reddit pages to the old Reddit interface at old.reddit.com.

Cleans Chrome browsing data such as cache, history, downloads list, cookies, form data, and saved passwords.

This extension adds speech input to web text fields and clipboard workflows.

This extension opens GitHub-hosted Jupyter notebooks in Google Colab.

Redirects Google Classroom email actions to Outlook for students or guardians.

Adds Outreach communication tools for Gmail and Salesforce calling and emailing.

Stores Salesforce account details and helps identify and open Salesforce org tabs quickly.

This extension redirects searches from the browser omnibox to Yahoo Search.

Open site in removepaywall sends the current tab's full URL to removepaywall.com when you click its menu item or toolbar icon.

Online Photo Tool maintains a hidden pinned Google tab to silently perform keyword searches and click target URLs on behalf of paying clients.

Adds an offline classic OutRun-style driving game to Chrome.

Save web pages, selections, highlights, and metadata from the browser into an Obsidian vault.

This extension provides a Pomodoro focus timer with website blocking during focus sessions or scheduled hours.

Redirects Reddit pages to the old Reddit interface on old.reddit.com.

Okta Browser Plugin sends analytics telemetry to third-party services, gated behind org settings and user consent.

OceanHero reads signed-in Google accounts and top-visited sites, and forwards your user ID to an ad network on every new tab.

Off The Record History sends a persistent extension UID and usage events to Google Analytics.

Online Alarm Clock opens the onliveclock.com web app in a new tab and plays local alarm audio files through the browser.

This extension manages privacy-related browser settings and changes default search to privacyonlinesearch.com.

OptimAI Lite Node collects device fingerprints and reports uptime to api.optimai.network every 10–15 minutes in exchange for passive-income rewards.

Orbital Daggers injects server-controlled HTML into its popup from fn.onionfist.com and exposes extension storage to onionfist.com pages.

Outlier Assistant helps contributors complete AI labeling tasks on Google DataCompute by sending task data and queue events to app.outlier.ai.

Outsurf downloads shortcut rules from outsurf.net and redirects matching Google searches to configured destinations.