Browser extensions starting with O

Overlord Wallpaper sends top-site URLs from the new-tab page to Google's favicon service.

Adds combat and dice tracking overlays to Owlbear Rodeo maps.

obsidian-livesync-webclip sends clipped page content and saved CouchDB Basic credentials to a configured database URL.

open-os LLM Browser Extension sends chat prompts and configured persona text to the selected Ollama endpoint.

Calculates osu! performance points for submitted beatmaps in the browser.

OpenClaw relays CDP control of your signed-in browser tabs to a paired local automation service over an authenticated WebSocket.

OCR sends captured screen regions to OCR.space for text recognition and opens a JD Cloud affiliate page from its result link.

OfficeWork sends the URL of nearly every page you visit to a third-party server and can be told to redirect your tab.

OnlineShoppingTools queries its own coupon database on every site you visit and opens hidden background tabs to insert affiliate cookies when you copy a code.

One Piece Anime Wallpapers New Tab fetches a remote config on install and can open a server-chosen tab.

Connects a Chrome tab to a local OpenClaw relay for browser automation.

oOhcoupons sends the hostname of every site you visit to couponego.com and five third-party coupon services.

Orso writes each WhatsApp recipient number and message text, plus your own number, to its Firebase database on every send.

OmegaChat stores your panel email and plaintext password and resends both as HTTP headers on every automated poll to its backend.

Adds zoom controls for YouTube videos up to 2x.

Offers.com looks up your current site against its merchant list and fetches matching coupons over plain, unencrypted HTTP.

OGame Nexus reads OGame account, planet, resource, combat, expedition, and espionage data into local extension storage.

Organize-C adds WhatsApp Web tools and sends voice messages you transcribe to hiperchat.com.br.

Order 1688 - Taobao adds ordering tools to Taobao, Tmall and 1688 pages and changes two of the site's risk-control flags.

OKKI io sends each visited site's hostname and any email addresses found on pages to okki-free.xiaoman.cn.

Online Reading Bookcase embeds a vendor-hosted iframe on every page and sends it the page's URL and title.

OysterVPN answers every HTTP authentication prompt on any site with the user's saved account email and password.

Offline Search sets offlinesearches.com as your default browser search engine and routes every address-bar query through it.

Orbix sends open tab titles, URLs and page context to OpenRouter or NVIDIA when you submit a chat prompt.

Oh Mago CRM adds WhatsApp Web CRM tools and sends voice messages to hc-stt.hiperchat.com.br when you click transcribe.

OfferAhead sends your live ChatGPT access token to its own server every time you open the popup.

Olympia Infinity sends your Facebook friends' names, IDs and photo URLs to its own servers for its Messenger CRM.

OnlineShoppingTools sends the domain of each page you visit to its Firebase backend to show a coupon-count badge.

Ozon price-comparison tool reports full URL, title and referrer from AI chatbot pages to a Google Analytics property.

ONESTORE reads LINE Official Account CSRF cookies to list chat contacts and send bulk messages.

Displays relevant local OPALS library catalog resources alongside Google searches.

Obscured VPN routes all browser traffic through a vendor-supplied HTTP proxy and answers any HTTP auth prompt with your login.

Octopus Cloud Extension sends call phone numbers to a user-configured URL when calls ring, connect or end.

OlaDev sends deleted and view-once WhatsApp Web messages to its own backend for its CRM features.

Create, save, and collaborate on Office documents online with real-time co-authoring.

This extension provides a one-tap VPN proxy with encrypted browsing through global servers.

Onlyfans Downloader reads your OnlyFans session cookie and token to sign API requests for bulk downloads.

Onlyfans Helper Chrome sends usage event logs tied to your Google account email to api.savemydayapp.com.

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

OrganizeChat relays WhatsApp Web chats and messages to its backend and runs server-sent commands to read or send chats.

Connects you to an Outline VPN server using an access key for private internet access.

The OnlyFans downloader sends your OnlyFans cookies and auth IDs to its vendor's key service to fetch DRM video keys.

optionTrader sends the page URL and a persistent random ID to its own server and Google Analytics on supported trading pages.