Keyword Surfer vs SerpWorx (2026): which should you pick?

Pick Keyword Surfer if

• Fits if you want a keyword's volume while you're searching Google anyway
• Works for writers gathering related keywords into a list before drafting

Look elsewhere if

• Skip it if you use Firefox or Safari, as it's Chrome and Chromium browsers only
• Too light for keyword research away from Google, since there's no database to search on its own
• Not for you if you want page checks like titles, headings or schema, which it doesn't do
• Watch out: the store listing says it handles location, user activity and website content data

Pick SerpWorx if

• Fits if you size up the pages ranking for a keyword before writing for it
• Works for comparing Majestic, Moz and Semrush figures in one place

Look elsewhere if

• Pricey if you're one person, at $29.95 a month where most extensions here cost nothing
• Tight if you want to try it properly, as the free trial lasts 3 days
• Watch out: its own pricing page couldn't be read, so usage limits and any team plans are unconfirmed
• Skip it if you don't pay for Ahrefs, since the Ahrefs metrics need your own account
• Not for you if you're not on Chrome, as no Firefox version was found

Keyword Surfer

• It runs in Chrome and other Chromium browsers only; Surfer lists no Firefox or Safari version.
• It works on the Google results page and has no keyword database to search on its own.
• The store listing says it handles location, user activity and website content data.
• Surfer's paid content editor and AI visibility tools are a separate product with their own plans.

SerpWorx

• SerpWorx's own pricing page could not be read, so the price comes from its Chrome Web Store listing and plan limits are unconfirmed.
• The Ahrefs metrics need a separate Ahrefs account.
• It is listed for Chrome only; no Firefox add-on was found under its name.
• The free trial lasts 3 days, after which it is $29.95 a month.

Keyword Surfer

Volume and CPC in Google

Shows search volume and cost per click for the query in a side panel on the Google results page.

Keyword ideas

Lists keyword suggestions and related terms with their search volumes and an overlap score against the query.

Ranking page metrics

Estimates traffic for the pages in the results and shows their word count and how many times they use the keyword.

Collections and CSV export

Save keywords into folders to come back to without searching again, and export each folder as a CSV file.

Data for 70 countries

Search data can be set to any of 70 countries to match where an audience is.

Keyword Surfer in ChatGPT

The store listing says the extension also works in ChatGPT to rewrite text to sound more human and score how human it reads.

SerpWorx

Metrics bar in search results

Shows a bar of SEO metrics under every site in Google's results for the keyword you searched, so ranking pages can be compared side by side.

Majestic and Moz metrics

Trust Flow, Citation Flow and Topical Trust Flow from Majestic, and Domain Authority, Page Authority and Spam Score from Moz, with inbound link counts.

Ahrefs and Semrush data

Ahrefs URL Rating, Domain Rating, link counts and anchor text density, which need your own Ahrefs account, plus Semrush keyword visibility and monthly traffic.

On-page checks

Counts headings, outbound links and words, measures how often the searched phrase appears, checks for broken links and runs a mobile-friendly check.

Site background

Reports a domain's age from the Wayback Machine, where the site is hosted, the technology it is built with, indexed pages and Google page speed results.

Works on any site

The same metrics are available on any website you have open, not only on Google's results page.

Keyword Surfer

• Free$0

  Search volumes, CPC, keyword ideas, page metrics and keyword collections in Google results, free from the Chrome Web Store.

SerpWorx

• SerpWorx$29.95

  per month

  The single price the Chrome Web Store listing gives. Usage limits and any team plans are on a pricing page that could not be read.