Browser extensions starting with O

Open IE bundles an unsigned Windows executable and downloads it to the user's machine without any integrity verification.

Play a collection of offline mini-games in Chrome without an internet connection.

Onlinesim Access fetches proxy settings over plaintext HTTP and applies them to OnlineSim domains.

OpenLink Structured Data Sniffer accepts OIDC auth messages from any origin and stores them in extension storage.

Offer.love uploads collected bank card-offer details to api.offer.love every six hours.

OmniDefend SSO Extension accepts forged postMessage tokens without origin validation, allowing any web page to read the Windows username when Windows autologin is configured.

Onoff Business | Click2Call & SMS scans pages for phone numbers in visible text and form inputs.

Open Access Helper Web reads article DOI values from pages and sends them to open-access lookup APIs.

Orah Roll Checks identifies logged-in staff to Segment with profile, school, role, permission, and analytics IDs.

OshiKoi sends the active page URL to its chat API during system-trigger greeting messages.

orfline sends ORF TVthek page URLs to orfline.at when matching pages load.

Arabic and English Keyboard sends Teshkeel text from its popup to Farasa's diacritization API.

OUI9 HLS PLAYER M3U8 lets web pages drive tab-level request header changes through its public player page.

Octagon Find appends a persistent extension-generated session ID to searches sent to octagonfind.com.

Old Images Redirect sends Google Lens image data to Google's classic image search upload endpoint.

One-Click TickTick sends the active tab URL, title, and readable page content to TickTick when creating a task.

Open via Google Maps opens user-selected address text in Google Maps after an explicit user action.

OpenAPI DevTools records inspected-tab API request URLs, headers, and optional body examples for OpenAPI generation.

SPOI Options fetches a patch manifest from lazlo.spoi.com and can load vendor-specified CSS into video pages.

OCR Translator sends user-selected page screenshot regions to ocrt.iwanhae.kr for OCR.

Obsidian AI Exporter sends selected AI chat pages to the user's local Obsidian REST API.

OnePageCRM Lead Clipper sends profile URLs, emails, or phone numbers from supported pages to OnePageCRM contact lookup.

Online Piano can send extension-page session usage telemetry to accounts.api.extensions.ee.

The extension sends supported shopping page URLs to onual.com for price-history display.

OpenL Translate sends translation requests to api.openl.io with hardcoded API secrets bundled in the extension.

Opinew Shopify Reviews Importer sends Shopify shop owner details to Segment analytics from supported pages.

Osprey: Browser Protection sends checked page URLs to alphaMountain and Seclookup for security filtering.

Our Mouse Gesture lets page-dispatched mouse events trigger tab, window, and history actions through the extension.

Ozon Stats imports its popup font stylesheet from Google Fonts when the popup opens.

Open With sends the selected page or link URL to its local native helper when you use its open-with actions.

OCR Scanner Extension sends user-selected page screenshots to its Cloud Run OCR service with a stable user ID.

Octohint sends package names from code-host pages to jsDelivr to look up TypeScript definitions.

Ogame Fast expeditions fetches and runs remote code from kds-tools.com on OGame game and lobby pages.

Ojjina sends address-bar searches, suggestions, and new-tab search queries to ojjina.com.

Omni Convert redirects default omnibox search queries to find.madmidas.net monetized results.

The extension sends active-tab URL, page title, headings, and extracted page text to backend.onpageseo.ai for AI metadata generation.

One Piece Wallpaper sends precise browser geolocation to OpenWeatherMap for its new-tab weather widget.

One-Click Trello sends the active tab title, URL, selected text, and image URL to Trello when you create a card.

Open Prompt Manager places saved prompt titles, contents, and tags into the page DOM on permitted sites.

Open in Yandex Browser sends user-selected page, link, or tab URLs to its local native messaging host.

OptiPie TradingView Optimizer sends TradingView strategy metadata to api-stg.optipie.app when optimization starts.

OptiSearch sends search queries to ChatGPT when its assistant is invoked on search results pages.

Orbit CME sends medical article browsing details, interaction counts, and installed extension metadata to orbitcme.com.

OwlApply sends job descriptions, page URLs, and application question details to api.owlapply.com for analysis and autofill.

OpenVideo - ad-free streaming collects video metadata from pages and sends it to its hosted playback frame.

Open Subtitles sends the active page origin to gqlos.plus-sub.com after subtitle file loading or selection.

Ogame Infinity syncs configured OGame profile data to Pantry and sends PTRE activity or report imports when enabled.

QueChoisir - Oqif sends location, connection details, and speed-test results to QueChoisir endpoints.

one sec exposes its encoded extension runtime ID to every visited page.

Observe.AI Screen Recording sends active-tab details and redaction results to a local Observe recorder service.

Office Tools sends searches typed on its new-tab page to find.digital-marketing-ads.com.

Ome.tv Automator sends Ome.tv peer IP addresses to freeipapi.com for location lookup.

Omegle Alternatives removes frame and cross-origin security headers for pages opened by configured chat and payment sites.

OmniTab New Tab sends the active tab URL to api.omnitab.link when its popup opens.

On Page SEO Checker reads URL, metadata, headings, links, images, and structured data from pages when its side panel opens.

One Click Add Parcel - WePost sends supported shopping-page URLs and parcel tracking numbers to www.wepost.com.my.

One-Click Image Saver lets webpages trigger image downloads through synthetic shortcut clicks.

One-click file attachment by file.kiwi lets localhost pages insert text into a user-selected editable field.

OneClick sends LinkedIn profile details and email address to PostHog after reading LinkedIn cookies on job and feed pages.

OneNav sends each displayed saved bookmark URL to favicon.png.pub when loading favicons.