适用于 X、Facebook 和日常浏览的免费 Chrome 与 Firefox 扩展。可直接下载立即安装，或待审核通过后从商店添加。
🧩 19 个免费扩展
Download the videos and GIFs of any X (Twitter) post — HD or SD, with sound.
Save the videos and GIFs from the X (Twitter) post you have open, in one click. Choose HD or SD quality, keep the original sound, and watch a live download counter. No login, nothing leaves your browser.
Download Facebook videos, reels and photos while you watch — choose the quality.
Download the videos, reels and photos you are watching on Facebook, choosing the quality you want, with a live download counter. Works right while you browse — no login, your data stays in your browser.
Bulk follow and unfollow on X at a safe pace — limits, rests and auto-resume.
Grow and clean up your X (Twitter) account without doing everything by hand. Bulk follow or unfollow at a safe, human-like pace, with count limits, automatic rests, and auto-resume after any pause. You stay in full control.
Auto-approve or decline pending posts in your Facebook group, with keyword rules.
Takes the repetitive work out of running a Facebook group. It approves (publishes) or declines the pending posts in your queue automatically, following the keyword rules you set, with a live counter. You decide the rules and when it runs.
Send friend requests and cancel the unaccepted ones — daily limits and rests.
Manage Facebook friend requests in bulk, safely. Send requests and later cancel the ones that were not accepted, at a safe pace with daily limits, automatic rests and a live counter. You start it, set your limits, and it does the clicking.
See the numeric ID of any Facebook profile, page, group or post — one-click copy.
Shows the numeric ID of whatever Facebook profile, page, group or post you currently have open, and lets you copy it in one click. No digging through page source. Pairs well with our online Find Facebook ID tool.
Free, unlimited 2FA codes — add accounts by secret key or otpauth link.
A free, unlimited two-factor (2FA) authenticator in your browser. Add accounts by secret key or otpauth link; the codes refresh every 30 seconds and are stored only on your device. No account, no sign-up.
Capture the full page, the visible area, or a region — saved as a PNG.
Take a screenshot of the full page, the visible area, or just a region you select, and save it instantly as a PNG. One click from the toolbar — fast, free and private, nothing leaves your browser.
Bulk-delete your own Facebook posts and comments — filter by words or date.
Clean up your Facebook in bulk: delete your own posts and comments, filter them by words or date, and moderate the pages and groups you admin. Works through the interface only — no login, your data stays in your browser.
Invite friends to like your Page or join your Group — small safe batches.
Invite your friends to like a Facebook Page or join a Group you admin, in small safe batches with a wait time you control. Works through the interface only — no login, your data stays in your browser.
Turn any website dark with one click — adjustable brightness, contrast and warmth.
Give every website a comfortable dark theme with one click. Fine-tune the brightness, contrast and warmth, and keep a per-site preference so each site remembers how you like it. Fast, lightweight and private — no data collection.
Auto-format raw JSON into a collapsible, color-highlighted tree — plus a validator.
Turn raw JSON pages into a clean, collapsible, color-highlighted tree automatically. A built-in popup lets you paste, format, minify and validate JSON on the spot. Fast and private — nothing leaves your browser.
Collapse all open tabs into a saved list to free memory — restore them anytime.
Collapse all your open tabs into one saved list with a single click to free up memory, then restore them whenever you need. Search your tabs, close duplicates, and manage saved sessions. Private — no data collection.
Control any HTML5 video's speed with shortcuts and a draggable on-screen badge.
Control the playback speed of any HTML5 video with keyboard shortcuts and a draggable on-screen badge. Speed up lectures, slow down tutorials, and rewind or fast-forward in a tap. Fast and private — no data collection.
Create a QR code for the current page or any text — download as PNG, offline.
Instantly create a QR code for the page you have open or for any text you type, then download it as a PNG. Works fully offline — everything is generated in your browser, with no data collection.
Turn any cluttered article into a clean, distraction-free reading view.
Turn any cluttered article into a clean, distraction-free reading view. Removes ads, menus and sidebars, with adjustable font size and width and light, sepia or dark themes. Private — no data collection.
Block distracting websites and stay focused — with optional focus hours.
Block distracting websites and stay focused. Add sites to your block list, optionally only during focus hours, and see a calm block screen instead. Works locally with no data collection.
Boost the current tab's volume up to 500% with a simple slider.
Make quiet videos and audio louder — boost the volume of the current tab up to 500% with a simple slider. Uses the Web Audio API and works best on a site's own media. No data collection.
Read faster by bolding the first part of each word to guide your eyes.
Read faster by bolding the first part of each word to guide your eyes. Toggle it on any page, adjust the bold strength, and turn it off instantly. Fully reversible, works locally, with no data collection.
在商店审核期间，您可以在几秒钟内手动安装扩展。点击下载，将文件解压到文件夹，然后：
商店审核通过后，应用商店或附加组件按钮将启用，一键即可安装并自动更新。Firefox 临时附加组件在重启浏览器前一直有效；商店版本则永久有效。
点击下载按钮并解压文件。在 Chrome、Edge 或 Brave 中打开 chrome://extensions，开启开发者模式并点击加载已解压的扩展程序。在 Firefox 中打开 about:debugging，选择临时载入附加组件，然后选择 manifest.json。
可以。每个扩展都已提交到这两个商店。审核期间可使用直接下载；审核通过后，该扩展的商店按钮即可一键安装并自动更新。
是的。所有 Visatk 扩展均免费，并且只申请必要的权限。不会自行运行，也无需登录账户——您的数据始终保留在浏览器中。
扩展可在桌面版 Chromium 浏览器和 Firefox（Windows、macOS、Linux）上运行。大多数移动浏览器不支持扩展，因此请在电脑上安装。