A "free gem" short video pushed a plugin that had only 219 users over 5 months to 1,000: Lighthouse-MD

Lighthouse-MD is a Chrome extension: one click runs Google's PageSpeed test on the current page, then rewrites the results into a CLAUDE.md that Claude Code can use directly to edit code. It launched in May and stayed lukewarm for months, then in the last two weeks of October its users grew more than fourfold. The doubling wasn't because of the product itself; a developer influencer posted one video. This piece covers how it took off, who's competing with it, and whether it's worth following.

One post on the morning of Oct 23

On 2026 Oct 23 10:15 (UTC), RammCodes (Ram Maheshwari), a dev creator who says he has 500k followers across all platforms, posted a video on X. The opening line:

Holy F\*CK... WHY DIDN'T I FIND THIS EARLIER? 🤯 This FREE Chrome extension turns your website's Lighthouse audit into a ready-to-use CLAUDE-md fix plan that you can hand straight to Claude Code.

The ending is "Run the audit... Hand over the fix plan... Let Claude Code cook :)" He posted the same content on Instagram, LinkedIn, and Facebook. The numbers on X were unremarkable: 2,666 views, 32 likes, 59 bookmarks (11-06). The Instagram Reel got about 263 likes. On LinkedIn the title became "OHH... WHY DIDN'T I FIND THIS EARLIER?" with dozens of comments.

Now look at the plugin's user count (extops.dev's 90-day curve): on Oct 24 it was still 219, a figure that had been rising by about one a day since September. From Oct 25 it went 333,26, 456,28, 711. Afterward a batch of repost accounts appeared on Facebook and LinkedIn, copying the "Holy F\*CK" caption word for word, and users kept climbing at 20–30 per day, reaching 1,000 by Nov 6. The store has only 1 ratings, averaging 5 stars.

Whether the post was a paid promotion can't be determined from the outside. The post isn't tagged #ad, but accounts like RammCodes do take sponsorships, and the developer wrote on Indie Hackers in May about proactively pitching newsletters for features. Both possibilities are open (unverified).

What it actually does

It was built by Baris Kocdur, a Turk whose day job is marketing VP at Justlife, a Dubai company, with about 2,100 followers on X. By his account on LinkedIn, it's "a small tool built in a weekend, so I didn't have to keep copy-pasting PageSpeed results into Claude one section at a time."

The store page states its value clearly: "Raw Lighthouse JSON is too big and flat for coding agents." The plugin reorganizes that JSON:

• Each failed audit gets its measured value and passing threshold;
• Each item lists which scripts, images, fonts, DOM nodes, and third-party domains are dragging it down, sorted by how many milliseconds or KB you could save;
• Each item gets one concrete fix;
• A separate list of "already passing, don't break these." This is the focus of his repeated iteration, so the agent doesn't speed things up by breaking the accessibility checks;
• Finally, an "Ask Claude to fix problems" button that launches Claude Code and passes the instructions in.

No signup, no need to enter your own Google API key (the test runs on his own server), and the extension only needs permission for the current tab and his own site. The web version lighthouse-md.com is the core product; the extension was added later because "a user asked for it."

Why now, and why this one

Timing. In 2026 Claude Code made "putting a CLAUDE.md in the repo for the agent to read" a habit for many people, and "converting something into a .md for agents" became a small trend. The Chrome Web Store recommends it alongside DESIGN.md Generator (6k users), DESIGN.md Inspector (7k), and UIDrop (10k), and this cluster grows together. Lighthouse's new Agentic Browsing category (testing whether AI agents can read and operate your page) was also immediately added to the site as a selling point.

Easy to film. Four scores in one click, then one more click and Claude Code starts editing code. A 30-second vertical video is just enough to show the whole thing. This is what creators are willing to repost.

Those two points aren't enough on their own. The same product went from May to Oct with only 23, reaching 219. The developer did everything in his power: posted in r/ClaudeCode, r/webdev, r/IMadeThis, and r/TheFounders in May (titled "first week 200 users"); launched on Product Hunt and got 3 votes, ranking 154 that day; wrote build logs on Indie Hackers; changed the store title to include "Lighthouse" (he said it's the highest-volume search term); went from 2 screenshots to 5; published 30+ audit explainer pages under /audits/ on the site, each with a .md mirror and llms.txt, syncing two posts a week to dev.to with canonicals pointing back to the site; and submitted PRs to awesome-lists for backlinks. Together these brought in the first one or two hundred users, then it stalled. Only 10-23 got the curve moving again.

Where the money comes from

The plugin and the web page both say forever free, and the developer May told IH "no plans to monetize." The money went somewhere else: in 2026 Aug 5 they launched a Shopify App, "Lighthouse-md": free tier plus Pro at $9/month ($99/year), wired into Shopify's own AI assistant Sidekick. As of Nov 6 the App has zero reviews, so there's no way to tell whether anyone is paying. The plugin has a "weekly email report," whose real job is collecting emails.

So this is a plugin that pulls in traffic, with the plan to charge Shopify merchants, who already have a habit of paying for tools. The plugin itself makes no money yet, and the revenue path hasn't been proven.

Who it's competing with

In the store, the "turn audit results into instructions for an agent" slot is the biggest, with only double-digit users for each competitor. But the slot itself is small, and it's being squeezed from both sides: on one side, Google's official DevTools MCP already lets agents run Lighthouse; on the other, agents are increasingly able to call APIs and read web pages on their own. The comment "what's the difference from giving it to Claude directly?" is the question it has the hardest time answering.

How many people know about it

It spread through small circles. No media coverage, no public revenue. The biggest exposure on X was one post with 2.6k views, with a bit more on Instagram and LinkedIn. One copycat has appeared (Lighthouse Handoff), with only 15 users.

If it were you

The short take: This plugin isn't worth copying as is. Two things are worth learning: the approach of rewriting an existing tool's output into instructions an agent can act on directly, and the growth approach of making something easy to share, then getting developer influencers to push it across all platforms at once.

Who it's for: Indie developers who can build Chrome extensions, have a developer tool they use every day, and can reach developer creators (or are willing to pay them).

Who it's not for: People who want to make money from the plugin itself, or who have no distribution channel and only plan to post on Reddit and PH. Lighthouse-MD already shows the organic route only got 200 users in 5 months.

How to do it: Don't build another Lighthouse version. Do the same thing with a different tool: Sentry errors, Search Console issue lists, axe accessibility scans, npm audit / Snyk security reports, failed payments in the Stripe dashboard... Pick one whose output is large and messy, where humans find it tedious to fix. Follow its format: for each item, write the problem, where it comes from, and how to fix it, add a "don't break these" list, and include a button that launches Claude Code or Cursor in one click. No sign-up and no key are what set it apart from copycats, so copy that. You could build it in a weekend.

How to get users: First, record the 30-second demo: click once, get a list of problems, click again, the agent starts fixing, and the score turns green. Take it to developer creators like RammCodes and ask for posts on X, IG, LinkedIn, and FB on the same day. Repost accounts will then spread it for free. Put the most-searched tool name in the store title. If you want to charge, follow its lead and sell on platforms where people already pay (Shopify apps, WordPress plugins, team plans), not inside the plugin.

When to move: The sooner the better, within six months (estimate). Once Google, Sentry, and similar companies add a "copy for agent" button to their own products, that slot disappears.

What would show you're wrong: ① Lighthouse-MD's user count stalls at just over 1,000 by early December and stops growing. That would mean the spike was one-time, and store recommendations aren't bringing ongoing traffic. ② PageSpeed Insights or Chrome DevTools adds a "copy as agent prompt" button. ③ The reverse: if its Shopify app gets paid reviews within a month or two, or if a copycat like Lighthouse Handoff climbs past a thousand users, then this slot is bigger than it looks and worth doing seriously.