Six Browser Extensions That Make AI Automation Feel Less Like Work

Why I Keep Coming Back to Browser Extensions

There’s a certain thrill in finding a tool that shaves seconds off a task you do a hundred times a day. Browser extensions are the low-hanging fruit of productivity. They sit quietly in your toolbar, waiting to automate the boring stuff—copying, searching, translating, even watching videos. The six tools below, collected from a roundup by Chinese tech site SSPai, aren’t just handy. They’re small experiments in how much drudgery we can strip out of our digital lives.

Some of these are brand new. Others are polished updates. All of them lean into automation in ways that feel practical, not gimmicky. Let’s dig in.

ZebuClip: The Copy-Paste Workhorse

If you’ve ever spent an afternoon copying bits from a dozen web pages into a single document, you know the pain. ZebuClip, built by a developer who was tired of the same grind, turns that chaos into something manageable. It’s not just a clipboard history tool—it’s a mini workflow for collecting, organizing, and exporting copied content.

Here’s the twist: instead of hoarding everything you’ve ever copied, ZebuClip forces you to cap your clipboard list. When you hit the limit, you have to export, paste, or clear. That little constraint keeps the list from becoming a digital junk drawer.

But the real magic is in the output. You can paste as plain text, Markdown, or rich text. Need to move 20 items at once? Hit batch copy. Prefer a file? Download your collection as TXT, CSV, Excel, JSON, or Markdown. There’s even an API mode that pushes content straight to apps like Notion, Obsidian, or Flomo.

For anyone who lives in a browser and wrestles with research, this is the kind of automation that pays for itself in saved sanity.

OpenCookie: A Cookie Editor You Can Actually Trust

Developers know the drill: you’re debugging a login issue, you need to tweak a cookie, and the browser’s built-in tools feel clunky. Most cookie editors are closed-source, which is a problem when cookies hold session keys—the digital keys to your accounts.

OpenCookie is different. It’s open-source, built in pure JavaScript, and designed around three principles: no data uploads, minimal permissions, and code small enough to read in one sitting. The developer wanted a tool that wouldn’t secretly phone home with your credentials.

Functionally, it’s a solid cookie editor. You can view, add, edit, delete, search, and import/export cookies as JSON. It supports dark mode and respects your choice of granting access only to specific sites. For a niche audience—developers, QA folks, anyone who fiddles with sessions—this is a breath of fresh air.

Lumno: The Spotlight for Your Browser

Arc browser’s command bar is one of those features you don’t realize you miss until you switch back to Chrome. Lumno brings that magic to any Chromium browser. It’s a search bar that lets you find bookmarks, history, open tabs, even run site-specific searches—all from one keyboard shortcut.

Type a keyword and hit Enter. Lumno pulls up relevant bookmarks, history entries, and top sites. You can jump to a specific site like YouTube and press Tab to search within it. There’s also a neat trick for AI chat: type “Gemini” or “GPT,” hit Tab, and your prompt goes straight into that AI’s web app, bypassing the extra click.

For heavy tab users, the window switcher is a godsend. Press Alt/Option + Q to cycle through your last five visited tabs. It’s like a mini command palette for people who have 30 tabs open and can’t find anything.

Lumno also adds a few Arc-inspired touches: video auto-picture-in-picture, pinned tab persistence across restarts, and a new tab page with wallpaper filters. It’s open-source and respects your privacy—no data collection, no tracking.

E2N: One-Click Research to Knowledge Base

If you’re building a personal knowledge base, you know the pain of copying content from the web. Formatting gets mangled, images break, and videos are a nightmare. E2N (Everything to Notebook) is built to fix that—it’s a “small shovel” that scoops clean content and drops it into your note-taking app.

Right-click any page and choose “Clip this page.” E2N strips out sidebars, ads, and clutter, keeping the main text and images. For platforms like Zhihu, it even preserves source URLs and converts formulas to LaTeX. For Xiaohongshu’s image-heavy posts, you can plug in an LLM API and it’ll OCR the text right out.

Video is where E2N shines. If a YouTube or Bilibili video has subtitles, it extracts them in seconds—no AI tokens wasted. No subtitles? It can transcribe audio via your own API key. Then it pushes the cleaned content to Obsidian, Notion, Feishu, or NotebookLM, with images and embedded videos intact.

There’s no cloud sync, no account system. It’s a local-first tool for people who live in their browser and want their research to actually end up in their notes.

SubMask: Watch Shows, Learn Languages, and Actually Hear the Words

Bilingual subtitles sound like a great idea for language learning. But research suggests they’re not. Your brain reads your native language faster, so you end up reading the translation and ignoring the foreign audio. The fix? Hide the subtitles. But most video players don’t let you turn them off separately.

SubMask is a free extension that covers subtitles with a stylish mask. You can choose from three styles, including a “liquid glass” effect that blurs the text while letting the video show through. It’s designed to stay out of your way: one-click snapping to the subtitle area, a hotkey (H) to temporarily reveal the text, and a mouse-through mode so you can still drag the progress bar without the mask blocking you.

The developer built it out of frustration with her own language-learning attempts. It’s a simple idea, but it changes how you watch. You’re forced to listen, and when you’re stuck, you peek at the subtitles for a second—then hide them again.

OnlyTranslate: A Translator That Thinks About Context

Machine translation is everywhere, but most tools treat every page the same. OnlyTranslate, a fork of the open-source FluentRead, takes a smarter approach. It offers an “article mode” that focuses on the main content—posts, comments, long-form text—while leaving navigation buttons and sidebars untouched. That’s a huge win for reading foreign articles without the visual clutter of a fully translated UI.

It also handles video subtitles in a way that respects context. Instead of translating line by line (which breaks meaning), it chunks the subtitles and translates them as a whole, then displays them in sync with playback. It works on YouTube, Udemy, Coursera, and Khan Academy—as long as the video has original subtitles.

And for local bookworms, there’s a built-in EPUB reader. Import a DRM-free book, read it in the browser, and translate chapters on the fly. Your progress and bookmarks are stored locally, not in the cloud.

Translation services range from free options like Microsoft and Google to AI-powered ones like DeepL, OpenAI, and Gemini. You bring your own API key for the AI ones, and your text goes to those services—that’s the trade-off for quality.

Small Tools, Big Wins

None of these extensions will change your life overnight. But that’s not the point. They’re small automations that remove friction from tasks you do daily. Copy-paste becomes faster. Cookie editing becomes safer. Searching becomes more direct. Language learning becomes more active. Research becomes less tedious.

The best part? Most of these tools are open-source or free. They’re built by people who were annoyed enough to fix the problem themselves. That’s the spirit of automation—not waiting for a big tech company to bless you with a feature, but grabbing the tools that fit your workflow and running with them.