The day Chzzk redesigned, one small-extension dev fixed 6 extensions overnight

Chzzk Platter is an all-in-one Chrome extension for viewers of Chzzk, the Korean live streaming platform run by Naver: multiview, audio EQ, chat replay, and auto-claiming platform rewards, all in one package. It launched in June, grew from 3 thousand users to 10k in September, and has been stuck around 10k since. It's free and nobody has covered it. It took off because the author already had a set of small extensions and an old forum account, and when the platform redesign broke the veteran extensions, nobody fixed them. The playbook is worth studying, but the niche is small, crowded, and doesn't make money.

Jun 19

On Jun 18, 2026, Chzzk's web version switched frontends, renamed every CSS class, and every extension that worked by editing the page broke overnight. That same day, a post on DCInside asked, "Is Cheese Knife broken now?" Cheese Knife is the oldest all-in-one extension in the scene, with 30k users.

The next day, a fmkorea veteran named 리르파 (21-level account) posted on the Chzzk board with the title "[Fmkorea Update] Extension review status after Chzzk website structure change." The body was short: Chzzk changed its internal structure, his extensions broke, and the fixed versions were rushed out. He listed 6 names (배지 모아 챗, 치모티콘 정리, 콘치즈, 치즈 그라인더, 통나무파워 지우개, 치즈 서치). Chrome versions were all updated, and Whale and Edge were still in review.

The post got 17,611 views and 68 recommendations and hit fmkorea's hot list (포텐). Cheese Knife shipped a patched v2.13.1 in Jun 20. Since then, its GitHub has had no feature updates.

Meanwhile, 리르파 had just released something new 9 days earlier that bundled the features of his small extensions. It's called Cheese Platter.

What it is

The store tagline reads "Put Chzzk's search, player, mixer, chat, follows, and layout on one platter." Main features (from the Chrome Web Store listing, 11-06):

• Multiview: Up to 16 channels in one screen, for live and replay. It can auto or manually align latency across the panes, useful for watching several streamers together.
• Audio: 10 presets, gain up to 300%, 10-band EQ, and volume leveling, set separately for each live room.
• Chat: A chat heat map for replays and chat search. Click to jump to that moment.
• Auto-claim 통나무파워 (the points you earn watching on Chzzk), claimed on a schedule in the background.
• Sidebar, top bar, follow groups, custom layout, locked video quality, and live-latency catch-up.

Auto-claiming points alone has a separate extension with 20k users. Multiview also has 5 separate extensions. Cheese Platter bundles these single-purpose tools into one package.

How far it got

Not big. The Chrome Web Store has 10k users, a rating of 4.96, and 67 reviews (11-06). The curve on a third-party extension stats site: Sep 1 3k, Sep 13 6k, Sep 25 10k, and it hasn't moved since Oct 7. Over the past month the review count went from 29 to 67 while the user count stayed flat, so people are still using it and still leaving reviews, but no big wave of new users has come in.

Firefox has another 268 daily active users and 8 reviews, listed in Jul 1. It's also on Edge and Naver's own Whale browser, where user counts aren't visible.

No in-app purchases, no paid tier, no website, just a Notion privacy page. Over 120 days on X, not a single post mentions it, and no media has covered it.

Where users come from

Its own veteran users. The 6 small extensions listed in the Jun 19 post include 배지 모아 챗, the largest at 4k users. Later update posts often go out as "Cheese Platter + 배지 모아 챗" or "Cheese Platter + 콘치즈," so people who had installed the small ones naturally added the all-in-one pack.

A changelog post almost every week. Since June, 리르파 has posted a "[Fmkorea Update]" on the Chzzk board on fmkorea almost weekly. A typical post gets 1 to 3 thousand views, and big features spike it:

Every post follows the same format: bold list of what changed, screenshots, links to the Chrome, Whale, Edge, and Firefox stores at the bottom, and a line saying "bugs or features you want, leave a comment or review anytime." Requests from the comments often ship in the next version. Version numbers went from 1.0 to 1.65 over four-plus months.

User reviews say the same thing. A Firefox review from Jul 22: "Updates more often than other extensions with new features, and the maintenance is solid." One from Oct 22: "Wish I'd known sooner, it's insane software, the dev is a god. Can you add a delay to chat too?"

Spread by the fan communities. In September, people in the streamers' fan galleries on DCInside started recommending it unprompted: "Cheese Platter this is good" (9-09), and some compared its features to Cheese Knife's. On fmkorea's virtual streamer board in Sep 28, someone posted "Cheese Platter added multiview." The weeks when users doubled are exactly when these discussions appeared.

I couldn't pin down the exact trigger for September's doubling. My best guess is several things at once: word of mouth in the community, the Sep 16 version's redesigned settings and added chat replay, and users hunting for alternatives after a manually shared "all-in-one" script on DCInside. Multiview only arrived in Sep 28, by which point users were already at 10k, so it didn't drive the growth.

No ads found, no SEO, no website.

Who it's competing with

Chzzk took over from Twitch after Twitch pulled out of Korea in 2024. The web version has few features, and viewers have been filling the gap with extensions since late 2023. The Chrome Web Store has 30+ extensions for Chzzk, and the largest one has only 30-40k users.

The most instructive one is Cheese Spanner. It launched 11 days before Cheese Platter with nearly identical positioning, and has only 40% of its users. The difference isn't features. It's whether the author had veteran users, a recognized account on the forums, and whether they posted updates every week.

The biggest risks

Chzzk itself. Some things in Cheese Platter are the kind of thing a platform doesn't like: it can restore chat messages hidden by a cleaning bot or block filter, and it claims points in the background. In October, the external multiview site mul.live was refused connection by Chzzk (per a Naver gaming forum post). Under the Sep 28 post, 리르파 replied: "It's not just Cheese Platter. Other extensions and external multiview sites seem to be hit by the same thing too. I'm looking for a way to keep multiview running within Chzzk's policy."

In other words, the whole category's fate is in the platform's hands. When the platform redesigns, the extensions break. When it tightens up, the headline feature goes away. If the platform builds multiview itself, there's no reason to install an extension for it.

If it were you

One-line verdict: Don't build another all-in-one extension for Chzzk. It has 30+ rivals, the top one has only 30-40k users, it's free, and the platform is tightening. Cheese Platter's edge is the author's veteran users and forum accounts, which you don't have. What's worth taking is the playbook: use a few small extensions to build an audience and reputation, merge them into one all-in-one pack, publish the changelog as content every week, and be first to fix things when the platform changes.

Who it fits: Heavy users of a particular live or community platform who have a recognized account on its forums, Discord, or community boards, can write front-end code, and are willing to fix bugs every week. Good for building a portfolio and reputation without needing it to make money right away.

Who it doesn't fit: Anyone who wants to earn money directly from an extension (viewer extensions like this basically never get paid, and Cheese Platter has made nothing so far). Anyone nobody knows in the target platform's community, and anyone who can't handle staying up all night to fix things every time the platform redesigns.

How to do it: Find a platform with lots of web viewers, where official features are clearly lacking and no all-in-one extension has emerged yet. It could be a live platform in another country, or the same kind of need on another platform (a different live site, video site, or community site's web version). Start with two or three of the most painful single-purpose tools (ad blocking, locked quality, auto-claiming rewards, chat enhancement), each small and stable. Once users reach a few thousand, release the all-in-one pack and have the old extensions show a message saying "the new version is here." Make gray-area features (restoring hidden content, background reward farming) opt-in and off by default rather than selling points.

How to get users: Pin a title format on the platform's biggest fan forum and post an update every week: what changed, screenshots, links to the four stores, and one line saying "tell me what features you want in the comments." Ship the requests from the comments in the next version and credit them in the post. The 24 hours when the platform redesigns and the big extensions break are the biggest window. Prepare a compatibility layer in advance, fix it the same day, and post the same day. Get listed in every browser store at once, especially the platform parent company's own browser.

When the window closes: There's no fixed date. But once the platform you pick builds multiview, EQ, or similar features itself, or starts explicitly banning extensions, the gap closes.

Signs you've misread it: (1) You've been posting weekly updates for two months and single posts keep getting only a few hundred views, meaning that forum isn't where your audience is, or people don't recognize your account. (2) You fixed the platform's first redesign, but users didn't migrate from the old extensions, meaning veteran extension users are harder to win over than you thought. (3) Looking back, Cheese Platter is still stuck at 10k next year, meaning the ceiling for this kind of extension is the small slice of PC web viewers willing to install extensions at all.