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Cool Chrome extensions worth trying

The coolest Chrome extensions are small tools that fix one annoying problem well. Our top pick is WhatFont: hover over any text on a page and it instantly names the font, which is genuinely useful the first time you need it and easy to forget you have installed.

Last reviewed · 5 listings · Independent, not affiliated with Google

Our picks

  1. WhatFont

    Hover to identify any web font.

    Free Design ✓ No account needed

  2. JSON Formatter

    Pretty-print JSON right in the browser.

    Free Developer Tools ✓ Open source

  3. Instant Data Scraper

    Detects tables and lists and exports them to CSV.

    Free Automation ✓ No account needed

  4. Video Speed Controller

    Speed up, slow down and rewind any HTML5 video.

    Free Media & Entertainment ✓ Open source✓ No account needed

  5. Clear Cache

    Clear cache and cookies in one click.

    Free Developer Tools ✓ No account needed

Most people know about ad blockers and password managers, but a second tier of extensions solves narrower problems just as well. These tools rarely get mentioned in top-10 lists, yet each one saves real time once you know it exists.

Extensions for curious browsing

WhatFont identifies any font on a page by hovering over it, handy for designers and anyone rebuilding a look they liked. JSON Formatter pretty-prints raw JSON responses directly in the browser, turning an unreadable wall of text into indented, colored output instantly.

Extensions that save real time

Instant Data Scraper detects tables and repeating lists on a page and exports them to CSV without writing any code. Video Speed Controller adds keyboard shortcuts to speed up, slow down or rewind any HTML5 video, useful for lectures, tutorials and long meetings recordings.

A small but genuinely useful cleanup tool

Clear Cache clears cache and cookies in one click instead of digging through Chrome's settings menu. It is free and particularly useful for anyone who tests websites and needs a quick, repeatable way to reset a page's stored data.

Cool Chrome extensions worth trying: FAQs

What is a cool Chrome extension people don't know about?

WhatFont is a good example: hover over any text on a page and it instantly shows you the font name, a small feature that turns out to be useful far more often than expected.

Is there a Chrome extension to identify fonts on a website?

Yes, WhatFont lets you hover over any text and see its font name immediately, without needing to inspect the page's code manually.

Can I export a table from a website without coding?

Instant Data Scraper detects tables and repeating lists on a page automatically and exports the results to a CSV file, with no coding required.

Is there a Chrome extension to speed up online videos?

Video Speed Controller adds keyboard shortcuts to speed up, slow down or rewind any HTML5 video, which works on most video sites, not just one platform.

What is a good extension for clearing cache quickly?

Clear Cache clears cache and cookies in one click, saving you from opening Chrome's settings menu each time you need to reset a page while testing.

Are underrated Chrome extensions safe to install?

Check permissions before installing any extension, popular or not. A font identifier or video speed tool should only need access to the current page, not your full browsing history.

Can I pretty-print JSON directly in Chrome?

Yes, JSON Formatter automatically formats raw JSON responses into indented, readable output when you open a JSON file or API response in the browser.

What makes an extension 'cool' rather than just useful?

The most memorable extensions solve a specific annoyance instantly, like identifying a font or clearing one site's cache, rather than adding a broad set of features you rarely touch.

Do these hidden-gem extensions work on Chromebooks?

Most Chrome Web Store extensions, including these, install the same way on Chromebooks since they run on the same Chromium engine as desktop Chrome.

Is Instant Data Scraper free to use?

Yes, Instant Data Scraper is free and detects tables and lists on a page automatically, exporting them to CSV without requiring a paid plan.