Browser extensions starting with H

Visualizes H1–H6 headings on webpages for quick structure review.

Controls HTML5 video playback speed and skipping with keyboard shortcuts.

Automatically redirects supported websites from HTTP to HTTPS for encrypted browsing.

This extension lets users play a physics-based platform game about recovering lost donuts.

Highlighter lets users mark text on any active tab by injecting a local script that wraps selections in yellow highlight spans.

Shows a product’s price history while you browse supported Czech and Slovak e-shops.

Horizon Geolocation Redirection replaces the browser's location lookup on every HTTPS page with one relayed from VMware Horizon Client.

Hoverify captures page DOM, cookies, headers, and XHR URLs from broad-match pages into extension storage.

Bulk Image Downloader - HImage reads image URLs from the active tab for user-selected downloads.

HAVAH Wallet sends wallet interaction events (connect, sign, transaction URLs) to Google Analytics with a persistent client UUID.

Downloads movies, TV shows, episodes, audio tracks, and subtitles from rezka.ag and its mirrors.

Converts HEIC images to JPG files in the browser.

Adds HTML validation results to Chrome Developer Tools for HTML5 pages.

HTML to PDF generates a device fingerprint on each popup open and transmits it with geolocation data to hub.malson.eu.

Adds an HTML editor for inserting custom HTML into Gmail, Outlook, and Yahoo Mail messages.

Hack-Tools is a red-team browser toolkit that routes CVE lookups through corsproxy.io and ships hardcoded API keys for RSS feed services.

Handz scrapes DOM data on every website and collects yad2 listing data via injected scripts, forwarding results to its own servers.

Hangar Link Connect lets hangar.link request authenticated RSI pledge and buyback pages through your browser.

Track work time from Chrome and start Harvest timers inside supported project tools.

Hi - My Hindi Translator sends selected page text to Google Translate when you use its context-menu action.

HiveFury sends the full URL of every page you visit to its server to check it against a malicious-site list.

Tracks homework assignments and due dates from the browser.

Howdou for Google Classroom sends the signed-in teacher's email address and assignment IDs to embed.howdou.net on every interaction.

Tracks work time in Hubstaff for projects and supports workforce time reporting.

Replaces the default new tab page with a customizable, lightweight layout.

HBOmax Skipper sends account-linked Max profiles, viewing history, and live-event telemetry to external servers.

Pick colors from images and view their Hex, RGB, and HSL values in Chrome.

HGT Decode sends selected decode text over HTTP to hi.pcmoe.net for Bear, Roar, and Buddha decoding.

This extension converts HTML flipbook content into a print-ready PDF.

Blocks HTTP requests that match user-defined URL patterns.

This extension enables digital signing of prescribed electronic forms from the browser.

This extension helps users access, edit, search, and organize office documents in Hancom Docs.

Hanzii sends user-selected page text to Hanzii translation services and Google Translate.

This extension lets you play a two-player Head Soccer HTML5 game in Chrome, including offline play.

Headline Studio by CoSchedule accepts postMessage commands from any ngrok.io tunnel, allowing manipulation of CMS title fields and stored credentials.

Heimdall captures the text you copy or cut on any page, tags it with your Chrome profile email, and sends it to Shopee's servers.

Hero Wars - Assistant intercepts every Hero Wars game-API request and response and sends parsed game data to its own servers.

Automatically minimizes Discord’s channel list and adds a control to hide or show the server list.

This extension hides page scrollbars while keeping scrolling available.

Hides selected, promoted, and keyword-matched job listings on supported job boards.

Higgsfield Instant uploads selected page images to Higgsfield APIs for AI media generation.

This extension replaces the Chrome new tab page with a customizable, minimal search page.

This extension adds Devanagari fallback fonts so Hindi text renders correctly on webpages.

History Trends reads your browser history and visit details to build local statistics.

History by Date sends visited domains to those sites when it loads favicons for history entries in its action page.

HoneyBook Extend lets Gmail pages request stored extension data and route authenticated calls to HoneyBook's API.

This extension gives Spotify a hot pink visual style.

HubSpot Social sends page details from user-triggered shares to HubSpot's social composer.

Hulu Picture In Picture [QVI] sends logged-in Hulu viewing history and account/profile data to me3x.online.

Hustle sends each keystroke typed into its new-tab search box to hustletab.io for autocomplete suggestions.

HyperIntelligence scans page text on every navigation and sends matched keywords to the enterprise-configured MicroStrategy server.

Enhances the Roberts Space Industries Hangar page with pledge values, upgrade details, and improved filtering.

ZoneAlarm Web Secure authenticates to its local security agent using an API key hardcoded identically in every install.

This extension provides 1-click logins for websites using the heylogin mobile app.

Downloads HTTP Live Stream video playlists from web pages in selectable resolutions.

This extension deletes browser history according to configurable age and trigger settings.

Hover over images or videos to enlarge them to fit within the browser window.

Modifies, redirects, or cancels web requests and edits request and response data.

View HAR files and structured JSON in embedded visual, tree, or plain-text formats.