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The majority of your work day happens inside a browser tab, not inside an app you opened on purpose. Email, research, a half-written report, a dozen reference pages you’re never going back to read properly. That’s exactly the spot where an AI extension can help, or get in your way, depending on which one you pick.

The Chrome Web Store is stuffed with extensions claiming to make you faster at everything. Most of them get installed once, ignored for a week, then quietly deleted. The ones below are different. They’ve stuck around because they solve one specific problem well, not because they promise to fix your whole workflow.

We’ve grouped them by what they’re actually for, like summarizing, writing, research, translation, search, and automation. For each, you’ll get what it does, who it suits, and where it falls short, so you’re not finding that out the hard way after you’ve already handed it access to every tab you open.

Before You Install Anything

A few things worth knowing before you add a single extension to your browser.

Pick tools that solve a specific annoyance, not a vague ambition. If an extension’s pitch is “supercharge your productivity” without saying how, that’s usually marketing filling in for a feature that doesn’t exist. The extensions worth keeping tend to describe themselves in one plain sentence: it summarizes long articles, it catches typos, it translates a page.

Pay attention to what the extension can see. Once you grant an AI extension access to every site, it can technically read your email, your bank statements, your work documents, and anything open in that tab. Before installing, check whether it activates only when you click it or runs on every page by default, and review what data actually leaves your machine. Chrome’s own page on extension permissions is a decent place to understand what you’re agreeing to.

Add one at a time. Two or three AI sidebars all competing for the same strip of screen is more distracting than helpful. Install one, actually use it for a week, and only then decide if it’s earned a permanent spot.

Summarizing Long Content

Summarize (by Claude)

If your job involves reading more than you have time for, this extension is the one to try first. Point it at a blog post, a news article, or a PDF sitting open in your browser, and it hands back a summary, either as bullet points or a short paragraph, depending on how you’ve set it up. There’s also a feature that explains a highlighted chunk of text on its own, which is handy for jargon-heavy pages.

It’s quick, usually done in under six seconds, and it holds up on technical documentation better than most competitors. Where it struggles is with genuinely dense material, where it can flatten nuance that matters, and with pages that load content dynamically through JavaScript rather than serving it straight up.

One content strategist we spoke with runs their entire morning RSS pile through it before their coffee’s finished, cutting a 90-minute reading block down to about 35 minutes by only opening the eight articles that actually warrant a full read.

TLDR This

TLDR This does a similar job but leans harder into academic and PDF-heavy reading. Feed it a research paper or a long report and it pulls out the core argument, highlights key phrases, and estimates how long the full piece would take to read. It also flags potential bias in a source, though that’s a starting point for judgment, not a replacement for it.

The free version is actually usable, which isn’t something you can say about most tools in this space, though it does cap how many summaries you get per day. A graduate student building a literature review told us they ran over sixty papers through it and only opened the fifteen that looked genuinely relevant, reading just the methods and results sections first.

Getting Writing Done Faster

Grammarly

Grammarly checks grammar, spelling, tone, and clarity in pretty much any text box your browser touches: Gmail, Google Docs, Notion, Slack, LinkedIn, a random contact form. The 2026 version added an AI rewriting tool built right into the suggestion panel, which is a noticeable step up from the older rule-based corrections.

It’s most useful if you write professionally and want your voice to stay consistent, and especially if English isn’t your first language. The catch is that most of the AI features now sit behind the $30 monthly Premium tier, and it occasionally flags correct technical terms as mistakes if your writing gets specialized. One client services manager mentioned that the tone detector has saved them from sending a message that read as sharper than intended more than once.

Wordtune Sidekick

Wordtune sits in a sidebar and rewrites whatever text you highlight: shorter, longer, more formal, more casual, and shows you several versions at once rather than committing to one. There’s also a “spices” feature that suggests a relevant stat or counterpoint to strengthen an argument.

Getting multiple options rather than a single forced rewrite means you can pick the one that still sounds like you. It’s built for English first, so other languages are hit or miss, and the sidebar itself eats up real estate on a smaller screen. A marketing manager who runs every client email through the shortening feature said messages that used to run 300 words now land around 180, and replies come back faster as a result.

Doing Actual Research

Perplexity AI Companion

This adds a sidebar version of Perplexity’s search to your browser, so you can ask it about the page you’re currently reading or start a fresh question entirely, and it answers with sources attached rather than a flat unsourced summary. That citation habit matters if your work involves verifying claims before you repeat them.

The “ask about this page” function is genuinely useful on long documents you don’t want to reread in full. The weak point is source quality, since it’s pulling from whatever’s indexed and ranked well, which for niche topics can mean thin or biased material, so treat the summary as a lead rather than the final word and check the primary source. A freelance consultant researching competitors for a client project said they run Perplexity alongside the competitor’s own site, asking questions as they browse rather than opening ten separate tabs. If you’re trying to build research tools like this into something more structured, our piece on putting together an AI workflow that actually holds up walks through how research and writing tools connect.

Elicit

Elicit is built specifically for academic and scientific literature. It searches by meaning rather than exact keywords, so it catches conceptually related papers a normal search would miss, pulls out key findings from abstracts, and can export everything to a spreadsheet.

The semantic search is the real advantage here. It finds papers that a keyword search simply won’t surface. Coverage is strongest in medicine, economics, and social science, and thinner once you move into humanities or newer fields, and it’s not a stand-in for a proper systematic review if you’re working in a clinical or regulatory context. Elicit explains its own methodology if you want to see exactly what’s being automated before you trust it. A health economist we talked to surfaced 40 relevant studies in about 15 minutes on a task that used to take an afternoon.

Reading Content in Another Language

DeepL Translate

DeepL translates highlighted text or entire pages, and its output consistently reads more naturally than Chrome’s built-in translator, especially on anything with nuance. You can toggle between formal and informal register for languages where that distinction matters, which is a small feature that avoids a real professional mistake.

It’s strongest with European languages and noticeably weaker on Asian languages. The free tier limits how much you can translate through the linked document tool, and full-page translation occasionally scrambles a complex page’s layout. An analyst who follows German industrial news reads translated trade publications directly rather than waiting on a human translator for the first pass.

Searching Without the Noise

Kagi Assistant

Kagi runs a subscription search engine with no ads, and its browser assistant layers AI-generated answers with citations on top of that. What sets it apart is control: you can promote sites you trust and block ones you don’t, which shapes every future search.

For anyone doing serious research, that domain control alone can be worth the subscription, since blocking content-farm results and promoting trusted sources changes the quality of what comes back in a way that’s hard to overstate. Kagi’s own write-up on how they approach search quality goes into the mechanics if you’re curious. The tradeoff is the price, $10 a month for 300 searches or $25 for unlimited, and a smaller user base than Google means fewer people troubleshooting the same issues online. One independent researcher told us they’ve blocked every content-farm domain they’ve ever been burned by and promoted the publications they actually trust, and it noticeably cut the time they spend filtering junk.

Automating the Repetitive Stuff

Bardeen AI

Bardeen records a sequence of browser actions and can replay them with an AI layer that makes decisions mid-workflow: pulling data off a page, filling in a form, moving information between two web apps. You build the workflow visually, no code involved.

It’s aimed at anyone doing the same multi-step task across web apps daily: sales reps pulling lead data, recruiters checking job boards, operations teams doing manual CRM entry. The AI-driven scraping adjusts better than older CSS-selector-based tools when a site’s layout changes, and there’s a decent library of ready-made templates. The catch is that more complex workflows need occasional maintenance when a target site redesigns, and it isn’t a substitute for a proper data pipeline if you’re working at real scale. A sales rep told us a task that used to take 45 minutes, pulling company details off LinkedIn into a spreadsheet, now takes about 8 minutes including a quick human check.

Merlin

Merlin puts several AI models, GPT-4o, Claude, Gemini, into one sidebar so you’re not bouncing between browser tabs to reach each one separately. There’s a context-aware “ask about this page” mode, custom prompt shortcuts, and built-in summarizing for YouTube videos and PDFs.

The appeal is obvious if you already switch models depending on the task, Claude for writing, GPT-4o for analysis, without paying for three separate subscriptions. The free tier caps daily queries fairly low, the sidebar can feel cramped on a small screen, and access to any given model depends on Merlin’s own deals with each provider, which can shift. A content manager we spoke with drafts captions from a blog post, checks the tone with Claude, and generates alt text for images, all without leaving the CMS tab they’re already working in.

How They Stack Up

Extension	Category	Best For	Free Tier	Starting Price
Summarize (Claud)	Summarizing	Long articles, fast	Limited	$8/month
TLDR This	Summarizing	Articles and PDFs	Yes, capped	$4/month
Grammarly	Writing	Professional writing	Yes, limited	$30/month
Wordtune Sidekick	Writing	Rewriting on the fly	Yes, limited	$14/month
Perplexity Companion	Research	Sourced answers	Yes	$20/month
Elicit	Research	Academic papers	Yes, limited	$12/month
DeepL Translate	Translation	European languages	Yes, limited	$12/month
Kagi Assistant	Search	Ad-free, controllable	No	$10/month
Bardeen AI	Automation	Repetitive browser tasks	Yes, limited	$10/month
Merlin	Multi-model AI	One sidebar, many models	Yes, limited	$15/month

Where Extensions Fit Into the Bigger Picture

None of these tools are meant to run your entire workflow on their own. They’re good at one job each, and they work best stitched together rather than used in isolation.

Freelancers in particular tend to land on a similar combination: Grammarly for the writing itself, Perplexity for sourced research, Bardeen for the client admin nobody enjoys doing by hand. That trio covers most of a freelance workload without a heavy monthly bill, and our roundup of AI tools built for freelancers goes further into what else is worth adding.

It’s also worth knowing where this is headed. Tools like OpenAI’s Operator are starting to operate a browser on your behalf rather than just assisting while you drive, which is a meaningfully different category from anything above. If that’s new territory for you, our plain-language look at what AI agents actually are is a reasonable place to start.

Common Questions

Are these safe to use?

It depends on the extension and how much risk you’re comfortable with. Anything with access to every site you visit can technically read sensitive stuff: email, documents, login pages. Stick to extensions from companies with a clear privacy policy, set permissions to activate on click rather than everywhere by default when that’s an option, and don’t stack multiple extensions with overlapping access. If you’re on a work machine with sensitive data, check with IT before installing anything.

Do these work on Edge?

Most of them do, since Edge runs on the same extension format as Chrome. Grammarly, Merlin, DeepL, and Perplexity all publish official Edge versions.

What’s best for students?

TLDR This and Elicit cover most of the academic workload between them: TLDR This for general reading, Elicit for peer-reviewed papers. Add Grammarly for the writing side and the whole set runs under $20 a month.

Do any of these work on Firefox?

Coverage is spottier than Chrome or Edge. Grammarly and DeepL both have Firefox versions. TLDR This works through the web app, so it doesn’t need a dedicated extension at all. Bardeen, for now, is Chrome and Edge only.

Will running these slow my browser down?

Running several at once can bump up memory use and occasionally slow page loads, especially on older hardware. If your browser starts dragging, open Chrome’s task manager with Shift+Esc to see which extension is the culprit, and turn off anything you’re not actively using.

Is there anything that works offline?

Not really, not with comparable quality. These all lean on sending page content to a remote AI API to do the actual processing, and nothing offline in 2026 matches that.

The Short Version

The extensions worth keeping aren’t the ones with the longest feature list, they’re the ones that fix one real problem you actually have. Summarize if you’re buried in reading. Grammarly if your writing needs to be consistently solid. Elicit if academic papers are your daily grind. Bardeen if you’re tired of copying the same data by hand.

Pick your single biggest time sink, install the extension built for exactly that, give it two weeks, and see if it earns its place. Three extensions you actually use beats a browser cluttered with a dozen you half-use and mostly ignore.

This roundup gets revisited every few months as pricing, features, and availability shift. Last checked: June 2026.