Why a browser extension that reverse-engineers web apps belongs in every cross-border seller’s toolkit
If you’ve ever stared at a competitor’s Shopify storefront, trying to guess whether that slick “buy now” button is powered by Recharge, Bold, or a custom React component, you know the frustration. Most cross-border operators rely on clunky combo platters: BuiltWith for tech stack, Wappalyzer for framework detection, manual DevTools spelunking for API calls, and sheer luck for component architecture. Meanwhile, your competitor just shipped a one-click upsell funnel that converts 12% better, and you can’t figure out how they did it. That’s the problem Archify solves — not as a marketing toy, but as a forensic tool for e-commerce intelligence. The product is a browser extension that runs entirely locally, injects a script into any live web page (just like React DevTools), and surfaces the page’s component tree, API endpoints, scripts, and architectural map without sending a byte to a server. For a DTC brand owner who wants to dissect a rival’s checkout flow, or an Amazon seller curious how a top competitor in the same niche builds their brand site on Shopify, this is gold — and it avoids the legal grey area of scraping because you’re only reading the live DOM and network metadata your browser already sees.
What problem Archify actually solves for e-commerce operators
The surface pitch is developer-focused: “understand software without digging through source maps.” But for a cross-border seller, the real problem is competitive intelligence opacity. When you’re selling on Amazon, your main battlefield is the listing page and PPC. But when you’re running a Shopify store, a TikTok Shop landing page, or a branded DTC site, the entire customer journey lives in the browser. Understanding how that journey is built — what components render the cart, where the shipping calculator API is called, which third-party scripts are track users, and whether they use a headless checkout or a standard Liquid theme — gives you leverage.
Let’s be concrete. Suppose you run a supplement brand on Amazon and also have a Shopify store that you want to optimize. You notice a competitor’s site loads a subscription widget in 1.2 seconds while yours takes 3. You open Archify on their site, and within seconds you see the component tree: they’re using Recharge with a lazy-loaded React component, their checkout API is hitting a custom endpoint on Shopify Plus, and their CDN is on Cloudflare’s edge. You also see they’ve loaded Klaviyo’s script on every page, hinting at a strong email capture funnel. That’s actionable intel you can’t get from BuiltWith alone (which tells you the tech stack but not the architecture) and you can’t get from Wappalyzer (which only detects frameworks at the top level).
Archify’s maker, Mohd Salahudeen, built it because “understanding software has become harder than writing it.” He’s right. The modern web app is a black box of minified JavaScript, dynamic imports, and split API calls. For an e-commerce operator, that black box is your revenue engine — or your competitor’s. Archify opens it up, and it does so without a server component. Everything runs in your tab, reading the live DOM and network activity. The maker confirms that “it only records metadata like request method, URL, and status, along with storage keys — never request bodies or storage values.” That means you can inspect a checkout flow without worrying about violating data privacy laws (GDPR, PIPL, etc.) because the data never leaves your machine.
Where the math breaks: performance and scale
Before you get too excited, note the product’s current limitations. One commenter noted that filtering on larger apps “needs some work” and the maker agreed it’s a known pain point. In e-commerce land, “larger apps” means a store with thousands of SKUs, multiple integrations (inventory, shipping, loyalty), and dozens of third-party scripts. If you’re trying to reverse-engineer a massive marketplace like SHEIN or a complex brand site like Gymshark, you might find the filtering slow. But the product is open source (github.com/Salah-XD/archify), so you could theoretically fork and optimize it — or wait for the next update.
How Archify differs from existing competitive intelligence tools
Every seller has used some version of tech-stack sniffers. Let’s compare the three main alternatives:
BuiltWith – Great for a bird’s-eye view of a domain’s technology providers (analytics, CDN, e-commerce platform). But it’s static and often outdated. It won’t tell you which React components are rendering the product card, or that the “add to cart” API is hitting a different subdomain. BuiltWith also requires a paid subscription to get past a handful of lookups per day. Archify is free, open source, and dynamic.
Wappalyzer – Excellent for detecting frameworks (React vs Vue, Shopify vs Magento). But it only scratches the surface. It won’t show you component trees, API endpoint patterns, or script dependencies. And it sends data to a cloud service? Wappalyzer’s browser extension does call home to update its rules. Archify is entirely offline — a huge advantage if you’re inspecting a sensitive client portal or a competitor’s logged-in content.
Manual DevTools – You can always open Chrome DevTools and dig through the Network tab, the Elements tab, and the Sources tab. But as Mohd Salahudeen puts it, “the DOM is in one place, network requests in another, and components somewhere else — and you’re the one trying to connect everything in your head.” Archify surfaces all of that in one unified view, filtered by component, API, script, or storage key. That saves hours of cross-referencing, especially when you’re auditing a SPA (single-page application) that dynamically loads modules as you navigate.
For cross-border sellers, the key differentiator is local-first architecture. You don’t want to upload a competitor’s checkout page to some third-party server just to understand it. Archify stays in your browser. The maker addresses trust directly: “Archify injects a script into the page, similar to how React DevTools works, but there’s no server and no proxying.” That means you can inspect a store that you’re logged into (e.g., a wholesale portal or a private storefront) without exposing your credentials or the page’s sensitive data.
Why Amazon sellers should care more than Shopify ones
At first glance, Archify seems tailor-made for DTC operators who own a Shopify store. They can inspect competitor storefronts to see how they structure their product pages, which widgets they embed, and what API calls trigger the cart. But Amazon FBA sellers need this too — even more urgently. Here’s why:
Amazon brand owners have notoriously little control over the on-platform customer experience. You can’t see how other sellers build their product detail pages (PDPS are mostly rendered by Amazon’s own system). However, many successful Amazon sellers also run a brand website to capture email traffic, display bundles, and run one-click upsells. That website is often a headless Shopify or a custom storefront built with Next.js. Archify lets you reverse-engineer how those top sellers architect their off-Amazon funnels. For example, you might discover that a top competitor in supplements uses a custom Zapier middleware to connect Shopify to Amazon’s API for inventory sync, or that they have a hidden landing page for a B2B wholesale portal. You can also audit your own site: after building a Shopify store with a new app, you can open Archify to verify that the component tree is clean and that no unnecessary scripts are slowing down your load time.
What cross-border sellers can borrow from Archify’s design philosophy
Beyond the tool itself, Archify embodies a few principles that e-commerce operators should adopt in their own tech stack thinking.
1. Local-first, privacy-first tooling. The product runs entirely locally. For a cross-border seller dealing with customers across GDPR, CCPA, and China’s Personal Information Protection Law, the less data you send to third parties, the lower your compliance risk. When evaluating any SaaS tool — from analytics to pop-ups to checkout builders — ask: does it need to send my data to its server, or can it run client-side? Archify proves that complex analysis can happen without a backend. The open-source availability also means you can audit what it does, something you should demand from every tool that touches your storefront.
2. Debugging your own funnel is as important as spying on competitors. Archify isn’t just for reverse-engineering others — it’s for understanding your own architecture. If you run a Shopify store with multiple apps (e.g., Reconvert for post-purchase upsells, Gorgias for chat, Loop for returns), the page can become a mess of scripts. Use Archify to see the full component tree and identify scripts that block rendering. The maker notes that “the performance impact is very small” because it only observes what the page is already doing. You can keep it open on your own site while you perform a transaction to see every API call and script that fires.
3. The value of seeing “blanks” rather than fakes. Salahudeen explicitly decided that if a production build has mangled component names, “Archify leaves them blank instead of confidently showing something wrong.” That’s a crucial lesson for e-commerce reporting: it’s better to show accurate “we don’t know” than to guess. Many analytics tools and A/B testing platforms fudge data to avoid blank spots, which leads to bad decisions. When you’re reading conversion metrics or API call logs, demand honesty over completeness.
Where my judgment says Archify falls short
I’m bullish on the concept, but I see a few gaps for the cross-border audience specifically:
No server-side insight. Archify works on the client side — the DOM, network requests, storage — but it cannot see what happens on the backend. For a competitor that uses a headless Shopify (with a custom frontend and a private backend), you won’t see backend API calls that run before the page loads (like SSR-generated content). You also won’t see any API calls that are made from server-side middleware (e.g., from a Shopify Webhook). If you need to understand a competitor’s backend architecture, you’ll still need tools like BuiltWith or manual probing.
No mobile app inspection. Most cross-border traffic, especially on TikTok Shop and Amazon, starts on mobile. Archify is a browser extension — it can’t inspect native mobile apps. You can use it on mobile web (if you open a mobile browser with extension support, like Kiwi), but the component detection may be less reliable on responsive views. One commenter asked about side panel support, which would help on desktop but doesn’t solve mobile.
Limited filtering on large apps. As noted, if you’re inspecting a complex store with thousands of network requests (e.g., a marketplace like Etsy or Amazon’s Seller Central), the filtering speed is slow. The maker acknowledges this is a work in progress. For now, you’ll get the full dump and then need to export or manually sift.
No export/history. The current version doesn’t seem to let you export the inspection as a JSON or HAR file, nor does it keep a history of past inspections. If you’re doing competitive analysis over time (e.g., checking if a competitor added a new component after a product launch), you’ll need to screenshot or manually record changes. The open-source nature means you could add these features, but not everyone has the engineering bandwidth.
What I’d watch / test next
Here are three concrete next steps an operator can take this week:
Install Archify from the Chrome Web Store (though the source doesn’t link the store, the extension is listed on Product Hunt; search “Archify” in the Chrome store) and run it on your own storefront while you simulate a checkout. Note every API endpoint called. Cross-reference with your own knowledge — are there any unintended scripts? This is a quick health check.
Pick a direct competitor (ideally one with a public Shopify or custom store) and inspect their product page and checkout flow. Document their component tree: which UI library (Material, Tailwind, etc.), which upsell app (based on script names), which payment gateway (Stripe vs. PayPal vs. Shop Pay). Compare their architecture to yours. If they’re using a headless setup with a custom cart API, you might consider a similar approach to reduce app dependency.
Fork the open-source repo and add a simple export-to-JSON feature (or use the existing console log) to build a competitive intelligence log over time. Even without coding, you can use the “copy” function from DevTools to manually record API endpoints. The key is to start capturing now — before your next product launch — so you have a baseline.
Archify isn’t a magic bullet. It won’t tell you your competitor’s ad spend or their conversion rate. But it will open the frontend architecture in a way that no other free tool does. For a cross-border seller who treats their storefront as a competitive asset, understanding what’s underneath — and what rivals are doing differently — is worth far more than the five minutes it takes to install the extension. Try it this week on your own site, then on a competitor’s. You’ll see the web differently.
