Why 18% of ML Projects Never Ship to Production
Why 87% of ML Projects Never Ship to Production — And the MLOps Stack That Actually Fixes It
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Phone: (832) 685 4410
Stallyons is the Chrome Extension Development Agency trusted by SaaS founders, productivity startups, and enterprise IT teams that need browser extensions built right the first time. Custom Manifest V3 extensions, AI-powered browser tools, SaaS companion extensions, enterprise managed deployments, and cross-browser builds for Edge, Brave, and Firefox. Built to pass Chrome Web Store review on the first submission, scale to millions of users, and survive every Chromium policy update.
98% First-Approval
Edge · Brave · Firefox

• Manifest V3 Compliant • Web Store Approval Ready • Cross-Browser Compatible
Languages Supported
Avg. Word Accuracy
Client Rating

• 95%+ Word Accuracy • Sub-300ms Streaming Latency • Multi-Provider Reliability
Multilingual STT
Production-Grade
Extensions Shipped
First-Submit Approval
Magento Stores Built
Store Uptime
Client Rating





A specialist Chrome Extension Development Company builds far more than a content script that runs on page load. It architects complete browser-native products: Manifest V3 service workers handling background logic, declarativeNetRequest rules for content filtering, content scripts injecting UI into any page, chrome.identity flows for OAuth, chrome.storage.sync for cross-device state, and monetization layers for freemium and subscription models. Modern Chrome extensions are distributed through the Chrome Web Store to over 3.5 billion Chromium-based browsers worldwide across Chrome, Edge, Brave, Opera, and Vivaldi.
The opportunity is asymmetric. A great Chrome extension puts your product inside every user's browser, adjacent to the URL bar, in the right-click context menu, and active on every page they visit. The wrong extension gets stuck in review limbo, rejected for vague policy violations, breaks after the next Chrome update, or drains user laptop batteries with bloated background scripts. The difference between an extension that gets featured by Google and one that gets buried in the Web Store comes down to engineering discipline. That is the discipline a specialist Chrome Extension Development Service brings from day one.
Why Manifest V3 Broke 60% of Extensions and Why a Native V3 Chrome Extension Development Company Matters
Manifest V2 supported persistent background pages, blocking webRequest APIs, eval-style remote code, and a permissions model that let extensions do almost anything. Great for power. Bad for privacy, security, and performance. Manifest V3 enforces service workers (event-driven, terminate when idle), the declarativeNetRequest API (rules-based content blocking, no live interception), no remote code execution, and a much tighter host_permissions model. As of mid-2024, Google completed the deprecation of Manifest V2, existing extensions stopped working unless rebuilt.
For new builds this is a huge advantage. Properly engineered V3 extensions are lighter, faster, more private, and don't drain user batteries. They're also far more likely to pass Chrome Web Store review on the first submission. But the migration trap is real: V2 patterns ported naively to V3 produce extensions that look correct but break in subtle ways, service workers terminating mid-operation, listeners not re-registering after wake-up, content scripts failing on dynamic content. Real V3 expertise is the difference.
Key Components of a Production-Grade Chrome Extension Development Service Engagement
How to Choose the Right Chrome Extension Development Company, Agency, or Consultant
Anyone can build a hello-world content script in 20 minutes. That is not a Chrome Extension Development Agency. That is a tutorial. Real expertise shows in how a team handles the expensive problems: passing Chrome Web Store review on the first submission, designing service workers that survive aggressive idle termination, building extensions that work cleanly on dynamic SPA pages like Gmail, Notion, and Linear, integrating with chrome.identity for OAuth without leaking tokens, shipping enterprise managed extensions via Google Workspace policies, and surviving the next Chrome update without an emergency overnight rebuild.
Look for a Chrome Extension Development Company with multiple extensions live in the Chrome Web Store, demonstrable native Manifest V3 expertise rather than ported V2 patterns, cross-browser shipping experience, deep comfort with chrome APIs including storage, runtime, scripting, alarms, declarativeNetRequest, identity, tabs, and sidePanel, and a proven record of enterprise managed extension deployments. If your first conversation is about which JavaScript framework to use instead of which user problem the extension solves, you are hiring a vendor, not a Chrome Extension Development consultant.
Why Teams Choose Stallyons

Extensions Shipped

First-Submit Approval

Chromium Browsers Supported

Client Satisfaction
Ready to ship a Chrome extension that actually gets used?
From AI-powered productivity tools to enterprise managed deployments, our Chrome Extension Development Company builds every extension type end-to-end.
Not sure which extension architecture fits your idea?
These are the most common and costly failures in browser extension projects that were not built by a specialist Chrome Extension Development Agency from the start.
Hitting any of these walls? Let's engineer an extension that ships and stays shipped.
From a Manifest V2 to V3 migration to a brand-new AI-powered productivity extension, our Chrome Extension Development Services cover every corner of the Chromium ecosystem with Web Store compliance and performance built in from day one.
Bespoke Chrome extensions built on the latest Manifest V3, service worker architecture, declarativeNetRequest, scripting API, action API. Engineered to survive Chrome's quarterly policy updates and pass Web Store review on the first submission.
Properly architected V3 migrations, not lazy ports. Background pages → service workers, blocking webRequest → declarativeNetRequest, persistent state → IndexedDB/chrome.storage, eval/remote code → bundled logic, with full regression testing.
ChatGPT, Claude, Gemini, and self-hosted LLM-powered extensions. In-context AI assistants, page summarizers, AI writing helpers, prompt managers, and AI search overlays, with secure API key handling and per-user rate limiting.
Browser-side companions for your web app, quick-capture, in-page widgets, contextual data injection, sidePanel API, OAuth flows via chrome.identity, and chrome.storage.sync for cross-device state.
Single codebase shipping to Chrome, Microsoft Edge, Brave, Opera, Vivaldi, and Firefox (via WebExtensions polyfill). Per-browser manifest variants, automated build pipelines, and store-specific submission packages.
Full Web Store submission management, listing optimization, screenshots and promo tiles, privacy policy and data-handling disclosures, permissions justifications, single-purpose policy compliance, and re-submission appeals handling.
Force-installed extensions deployed via Google Workspace policies, ExtensionInstallForcelist, or MDM. Internal tools, compliance helpers, SSO integrations, and corporate dashboards, bypassing the public Web Store entirely.
Popup, sidePanel, options page, devtools panel, and content-script overlay design. Modern frameworks (React, Vue, Svelte) bundled via Vite or Webpack, with proper context isolation and shadow DOM where needed.
Freemium gating, license validation, subscription integration (Stripe, Paddle, Chargebee), in-app upgrade flows, trial management, and Lemon Squeezy / Polar.sh for indie extensions. Compliant with Chrome Web Store payment policies.
Idle service workers, lazy-loaded content scripts, debounced storage writes, IndexedDB for large data, and zero-bloat manifests. Extensions that stay off Chrome's "resource-heavy" warnings and don't murder user laptops.
Minimum-required host_permissions, optional permissions for sensitive APIs, secure cross-context messaging, CSP-compliant resources, supply-chain auditing on npm dependencies, and pen-test prep for enterprise-grade extensions.
Retainer-based support, Chrome preview-channel testing, quarterly policy update tracking, emergency hotfix response, Web Store rating monitoring, bug triage, and feature roadmap execution. We keep extensions alive across Chromium updates.
Need help mapping these services to your extension roadmap?
Hiring specialists is the difference between an extension that ships and an extension that gets removed from the Web Store.
Ready to unlock these benefits for your extension?
A battle-tested methodology that ships Chrome extensions on time, on policy, and on rating.
Use case & policy audit
Manifest V3 build
Web Store + appeals
Popup, panel & flows
Edge / Brave / Firefox
Updates & user reviews
Want to see how this process maps to your extension idea?
A battle-tested methodology that ships Chrome extensions on time, on policy, and on rating.
Want to see how this process maps to your extension idea?
The full Chromium extension ecosystem, every API, every framework, every browser.
Manifest V3
Service Workers
declarativeNetRequest
scripting API
sidePanel API
React 18
Vue 3
Svelte / SvelteKit
TypeScript
TailwindCSS
Vite + CRX Plugin
Webpack
Plasmo / WXT
webextension-polyfill
Playwright
Google Chrome
Microsoft Edge
Brave
Firefox (Polyfill)
Opera / Vivaldi
Firebase / Supabase
AWS / Vercel
Auth0 / Clerk
Stripe / Paddle
OpenAI / Claude / Gemini
Let's design the right stack for your extension
Deep domain knowledge across the categories where browser extensions move the needle.
We understand your vertical. Let's build an extension users actually keep installed.
A Chrome extension is not just a browser tool. It is a distribution channel that puts your product adjacent to the URL bar on every browser session. Here is what teams achieve when they work with a specialist Chrome Extension Development Agency rather than a generalist developer.
Ready to quantify the business impact of a Chrome Extension Development Service for your product?
An honest look at your Chrome Extension development options.
| Capability | DIY / Templates | Freelancers | Generic Agency | Stallyons Technologies |
|---|---|---|---|---|
| Manifest V3 Architecture | ✕ V2 Tutorials | ⚠ Often Ported V2 | ⚠ Inconsistent | Native V3 |
| Web Store First-Submit Approval | ✕ 30-40% | ⚠ 60-70% | ⚠ 70-80% | 98% |
| Cross-Browser (Edge / Brave / Firefox) | ✕ Chrome Only | ✕ Rare | ⚠ Premium | Single Codebase |
| Battery & Performance Tuning | ✕ | ✕ | ⚠ Sometimes | Idle Workers |
| Enterprise Managed Deployment | ✕ | ✕ Rare | ⚠ Premium | Workspace Policies |
| Security & Permissions Hygiene | ✕ Asks Everything | ⚠ Often Over-Asks | ⚠ Specialty | Minimum Permissions |
| Chrome Update Survival | ✕ Breaks Often | ✕ Emergency Fixes | ⚠ Retainer | Canary Testing |
| Post-Launch Web Store Support | ✕ | ✕ | ⚠ Retainer Only | Continuous Support |
See the Stallyons difference for yourself









Every engagement includes all 8 components above. Get a custom quote tailored to your use case, complexity, and cross-browser targets.
Comprehensive review of your existing Web Store listing, title, description, screenshots, permissions, privacy policy, and rejection-risk factors.
If you're on V2, we'll audit your codebase, flag every V3 blocker, and deliver a phased migration plan with effort estimates.
Phased plan with manifest design, API selection, cross-browser strategy, monetization model, and a clear path from MVP to Web Store launch.
Every Chrome Extension Development Company should flex around your project scope, team structure, and distribution goals. Here are the three ways SaaS founders, enterprise IT teams, and productivity startups engage Stallyons.
Best for: New extension builds from scratch, Manifest V2 to V3 migrations, AI-powered extension development, and well-defined SaaS companion or enterprise managed extension projects. We scope, architect, build, submit to the Web Store, and hand off a production-ready extension with full documentation and regression test suite.
Best for: Growing SaaS products with active extension roadmaps, teams that need continuous feature development, ongoing Chrome Canary and Beta channel testing, and post-launch support to keep extensions stable across every Chrome update cycle.
Best for: In-house teams that need a senior Chrome Extension Development Consultant to review Manifest V3 architecture decisions, audit existing extensions for performance and security, guide Web Store submission strategy, or provide expert direction before committing to a full build or migration investment.
Not sure which engagement model fits your Chrome Extension Development project?
We stand behind every Chrome Extension Development engagement with ironclad commitments that protect your investment, your Web Store reputation, and your users.
Build with zero risk, backed by our Triple Intelligence Guarantee
160+
Extensions Shipped
98%
First-Submit Approval
4.7★
Avg. Web Store Rating
4.9
Client Rating
STALLYONS TECHNOLOGIES successfully delivered the app on time, meeting the client's expectations. The team impressed the client with their designs and quick work. They communicated effectively through virtual meetings, emails, and a messaging app.
Dani Seli
CEO, Restojoy
Dani Seli
Alimos, Greece
STALLYONS TECHNOLOGIES successfully completed the project on time, providing regular updates on their progress. The client was highly satisfied with the deliverables and impressed with the team's understanding of the app's logic and the resulting user experience.
Jerry Long
Founder, PicCiti LLC
Mark Sawyer
Tampa, Florida
Join SaaS founders, productivity startups, and enterprise IT teams shipping with Stallyons
Real outcomes from our Chrome Extension Development Agency. Not portfolio screenshots, but live production extensions with verified Web Store ratings, enterprise deployments at scale, and zero rejection incidents.
Chrome Web Store
Approval
Web Store Rating After
Launch
Chrome Update Incidents
in 11 Months
Workspace Seats
Deployed
Concept to Full
Deployment
IT Security Sign-Off
Want to see how our Chrome Extension Development Service applies to your specific extension idea or use case?
Chrome Extension development costs vary based on scope, complexity, cross-browser targets, backend integration, AI/LLM costs, and enterprise managed deployment requirements. A simple productivity extension is a very different investment than a multi-browser AI-powered SaaS companion with Stripe billing and chrome.identity OAuth. We provide detailed, transparent estimates after a free discovery call. No sticker shock and no surprises.
Yes. As of mid-2024, Google has completed the deprecation of Manifest V2 for the Chrome Web Store, V2 extensions no longer install for new users. Every new extension we build is native Manifest V3 from the ground up, and our migrations rewrite V2 patterns properly (service workers, declarativeNetRequest, scripting API) instead of lazily porting them.
Timelines depend on scope. A focused single-purpose extension typically runs 4-7 weeks. A SaaS companion with backend integration runs 8-12 weeks. A multi-browser AI-powered extension with billing usually takes 10-16 weeks. Enterprise managed deployments add 2-4 weeks for SSO and policy work. We provide accurate timelines during discovery and show weekly progress.
Not on first submission, in 98% of our cases. We know exactly which permissions trigger reviewer scrutiny, what to put in the permissions justification, how to structure the privacy policy, what screenshots to upload, and how to satisfy the single-purpose policy. If a rejection does happen, we handle every appeal and revision until it ships, at no extra cost.
Get a FREE consultation from our Chrome Extension Development Agency. We will audit your extension idea or existing build, identify Chrome Web Store approval risks, and map out a clear roadmap from architecture to launch.
Why 87% of ML Projects Never Ship to Production — And the MLOps Stack That Actually Fixes It
Why 87% of ML Projects Never Ship to Production — And the MLOps Stack That Actually Fixes It
Why 87% of ML Projects Never Ship to Production — And the MLOps Stack That Actually Fixes It
Why 87% of ML Projects Never Ship to Production — And the MLOps Stack That Actually Fixes It
Why 87% of ML Projects Never Ship to Production — And the MLOps Stack That Actually Fixes It
Why 87% of ML Projects Never Ship to Production — And the MLOps Stack That Actually Fixes It
Why 87% of ML Projects Never Ship to Production — And the MLOps Stack That Actually Fixes It