Browser extensions starting with H

Hunter Spy stores Shopee product and search details in page localStorage and hidden DOM markers.

Hyper Bold stores each visited page URL and hostname in local browser storage.

Happy Wild Cats tags default search requests with a persistent session ID sent to happycatswild.com.

Haxball All-in-one Tool sends chat messages you choose to translate to private-api-mkab.onrender.com.

Hello Kitty Wallpaper New Tab sends your top-site URLs to Google's favicon service on the new-tab page.

Hilton ResSmart Click to Dial loads third-party Font Awesome CSS on matched call-center pages.

HBO Max Party sends Max viewing, account, and profile data to remote collection endpoints.

HTML Tag Error Checker sends selected page and link URLs to a local native host during its open-in flow.

HTML to Markdown converts selected page HTML to Markdown and writes it back to the clipboard.

HTML-Table Scraper copies selected table text and form field values to the clipboard or a local download.

Hire3x Proctoring disables capture-capable extensions and reports tab activity during assessments.

HoloSchedule sends your selected member subscription mask to holo.dev during schedule syncs.

Hublead syncs LinkedIn invitation and connection details to its Hublead backend.

hektCaptcha downloads captcha-specific ONNX models from hekt-static.akmal.dev to automate challenge clicks.

Hunter sends the active tab's domain to extension-api.hunter.io when pages load or the active tab changes.

Html Validator sends inspected page HTML to W3C's online validator when the user runs online validation.

HBO Max Dual Subtitles sends subtitle text, tab details, runtime messages, and storage changes to Amplitude.

HKUL Search Assistant redirects opted-in publisher pages through HKU Libraries EZProxy.

HTTP Commander lets matching Default.aspx pages tell the browser to download page-supplied files.

Hero Wars Simulator fetches remote game-modification scripts and injects them into Hero Wars pages.

Hindi Dictionary sends selected single words from any website to k.kodand.com for dictionary lookups.

History Eliminator clears browser history when its background worker starts and after the final browser window closes.

Horizon Timez sends searches typed into its new-tab page to www.horizontimez.com.

Hreflang Checker reads hreflang, canonical, and page URL metadata from HTTP(S) tabs for local validation.

Human Reader lets sidebar pages request navigation rules that remove X-Frame-Options for chosen sites.

Happy Right-Click 2 copies active-page text, links, and image URLs to the clipboard when you use its menu actions.

HyperChat sends YouTube live chat text to kentonishi.com when message translation is enabled.

Hlídač Shopů sends supported-shop product page URLs and scraped item details to api.hlidacshopu.cz.

HackBar stores active-tab POST form data and request headers so its devtools panel can replay them.

Clear History & Web Cache injects a page button that can trigger deletion of configured browsing data.

H1B Sponsor Checker exposes a company details page that can send stored access codes to its API for employer searches.

HBO Max Extended shares Max/HBO account identifiers and viewing data with me3x.online and metricsmint.quest by default.

HedNet Protocol Extension fetches your public IP address from api.ipify.org while its popup is open.

Hello Kitty Live Wallpaper sends saved new-tab shortcut URLs to Google's favicon service when the page renders.

Hello Kitty Wallpapers HD New Tab sends custom shortcut URLs to Google's favicon service.

Henry Luxe Rewards sends serialized extension storage, including Supabase session tokens, to henry.social API requests.

Hexofy Scraper sends newly visited page URLs to Hexofy's GraphQL API while you are signed in.

Hide Expert VPN sends your screen dimensions to a third-party analytics API after installation.

Hide shorts for Youtube™ contacts Google Fonts from its popup when you open the extension menu.

Homely can fetch your eBay cart page over cleartext HTTP for its optional basket widget.

HoverTranslate sends selected YouTube caption text to translation services when you hover subtitle words.

Hulu Skipper sends Hulu watch history and account profile details to me3x.online and metricsmint.quest.

HypeStat Analyzer sends the active tab hostname to hypestat.com when you open its popup.

Holodex Plus lets embedded YouTube live-chat pages send chat text through its content script.

Hoppscotch Extension for Firefox lets Hoppscotch-approved pages proxy requests to any URL through the extension.

Downloads supported HLS and single-file video streams from websites to your local device.

Haikyuu Wallpaper sends URLs from your browser's top sites to Google's favicon service on the new-tab page.

Hello Kitty Wallpaper sends custom shortcut URLs to Google's favicon service when its new tab page loads.

Helpjuice: Auto-Updating Knowledge Base sends scraped help desk page text to Helpjuice's article candidate detector.

Hexomatic lets configured localhost pages overwrite stored authentication values used for its API calls.

Hotmail sends Microsoft OAuth client credentials to Microsoft's token endpoint during sign-in and token refresh.

Humantic AI lets page scripts on supported sites trigger authenticated requests to api.humantic.ai.

helloNFT collects Premint project page details and sends them to its backend.

heylogin posts authentication tokens and private session key material into pages it runs on.

History Export lets the user download up to one million browser history entries as a local JSON file.

HaramBlur sends options-page session recordings and signed-in user email addresses to PostHog.

HackBar stores main-frame request URLs, bodies, and headers from all sites in extension session storage for replay.

HD, Replay, Popout for YouTube sends popout video embed URLs to uslocaltv.appzend.net.