Illustrative previewA build-to-order Magento 2 / Adobe Commerce extension that lets your POS keep selling with no internet
connection, then auto-syncs every queued order, payment, and stock movement back to Magento the moment connectivity returns.
What is Magento 2 Offline POS Mode?
A build-to-order Magento 2 / Adobe Commerce extension that lets your POS keep selling with no internet connection, then auto-syncs every queued order, payment, and stock movement back to Magento the moment connectivity returns. Built to order by ECOSIRE for Magento 2 / Adobe Commerce (build-to-order) — indicative price from $999.00 USD; request a quote for a scoped proposal.
Key Features
Built to order, done for you
No DIY setup — a working app, built, installed and supported by ECOSIRE.
- 1
You order
Start with a one-time build price. We scope it with you at kickoff.
- 2
We build & install
ECOSIRE builds, configures and installs it on your Magento 2.
- 3
Go live + support
You go live in about one working week, with two weeks of go-live support. Defects in the code we deliver are fixed free of charge.
About this Product
Most Magento POS workflows die the instant the connection drops — the cart can't reach the GraphQL/REST endpoint, inventory won't reserve, and the register stops taking money. Magento 2 Offline POS Mode removes that single point of failure. It is a custom-built extension that ECOSIRE engineers, installs, and supports directly on your Magento Open Source or Adobe Commerce instance — not an instant Marketplace download.
The module ships as a versioned package under app/code/Ecosire/OfflinePos, wiring in through di.xml, an admin ACL resource, system configuration, and dedicated service contracts so behaviour is testable and upgrade-safe. When the browser detects loss of connectivity (Service Worker + IndexedDB cache), the POS keeps selling against a locally cached snapshot of your catalog, prices, tax rules, and recent customers. Each completed sale — line items, tendered payment, and the resulting stock movement — is written to a durable local queue.
The moment connectivity returns, a reconnect handler (backed by a Magento cron safety net) replays the queue through guarded service-contract calls. Orders are created idempotently using client-generated keys so a flaky network can never double-post a sale. Stock is reconciled through Magento's inventory APIs (MSI-aware on supported versions) with a conflict-safe strategy that flags oversells for review instead of silently corrupting quantities. Offline receipts print from the cached template the whole time, so the customer experience never changes.
Because it is build-to-order, we adapt the queue, payment capture, and reconciliation rules to your gateway, tax setup, and store/source structure — then hand over clean, documented code you fully own.
What you get
- Custom-built Ecosire_OfflinePos module installed on your Magento Open Source or Adobe Commerce instance (staging first, then production)
- Service Worker + IndexedDB offline layer integrated with your existing POS front end and theme
- Offline order queue, idempotent sync engine, and cron safety-net wired to your store/source and tax configuration
- Conflict-safe stock reconciliation rules tuned to your inventory model (single-source or MSI multi-source)
- Admin queue grid, ACL resources, and system-configuration panel for retention, retry, and price-lock policy
- Integration of offline receipt printing with your current receipt template and printer setup
- Technical documentation, an admin runbook for handling flagged conflicts, and source code you fully own
- Post-deployment support window, bug fixes, and compatibility checks against your Magento version upgrades
Who this is for
High-traffic store owner
Runs busy physical or hybrid stores where even minutes of checkout downtime means lost sales and long queues. Needs the till to keep taking money no matter what the ISP is doing.
Retailer in a low-connectivity region
Operates in areas with frequent power or internet outages. Cannot rely on always-on connectivity to Magento and needs a register that degrades gracefully and self-heals on reconnect.
Magento operations / IT lead
Owns the Magento Open Source or Adobe Commerce stack and wants offline resilience implemented as clean, upgrade-safe code under app/code — service contracts, ACL, cron — not a brittle theme hack, with documentation and a support path.
How Magento 2 Offline POS Mode Compares
| Criterion | ECOSIRE | Custom Build | Competitor | Magento 2 Native |
|---|---|---|---|---|
| Keeps selling with no internet connection | Included | Partial support | Partial support | Not included |
| Idempotent, conflict-safe order & stock sync on reconnect | Included | Partial support | Partial support | Not included |
| Built and tested against your specific gateway, tax & inventory model | Included | Included | Not included | Not included |
| Clean app/code module: di.xml, service contracts, ACL, cron | Included | Partial support | Included | Included |
| You own the source code and can extend it freely | Included | Included | Not included | Included |
| Vendor installs, configures, and supports it on your instance | Included | Not included | Partial support | Not included |
| Instant self-service download, no build lead time | Not included | Not included | Included | Included |
| MSI-aware reservations scoped to the register's source | Included | Partial support | Partial support | Not included |
Frequently Asked Questions about Magento 2 Offline POS Mode
How long does it take to build and deliver this extension?
Because every Magento install differs, this is build-to-order. After a short scoping call to confirm your version (Open Source vs Adobe Commerce), POS front end, payment gateway, and inventory model, typical delivery is about one working week: build on a staging copy, joint testing including simulated outages, then a supervised production install. Complex MSI or multi-store setups may extend this — we give you a firm timeline before you pay, not an instant download.
What ongoing support and updates are included?
Delivery includes a post-deployment support window for bug fixes and questions, plus the documented runbook for handling flagged stock conflicts. Because you receive and own the source code under app/code, you are never locked in. We also offer optional ongoing maintenance to re-verify the module against future Magento and Adobe Commerce upgrades, since core inventory and API behaviour can change between versions.
Won't offline orders create double-posted sales or oversells when the connection comes back?
No. Each offline sale gets a client-generated idempotency key, so replaying the queue on reconnect — whether triggered by the reconnect handler or the cron safety net — creates each order exactly once, even on a flaky link. Stock is reconciled through Magento's inventory service contracts; if two registers sold the last unit while offline, the system flags the oversell in the admin queue grid for review rather than silently corrupting quantities.
Does this work with Adobe Commerce and Magento Open Source, and with MSI?
Yes to both editions. We build against your specific version and target Magento's service contracts and inventory APIs rather than patching core, so it stays upgrade-safe. On versions with Multi-Source Inventory, the offline layer is MSI-aware and scopes reservations to the source assigned to that register. We confirm exact version and MSI support during scoping.
How does the POS know prices and products while offline?
While online, a Service Worker keeps an IndexedDB snapshot of your catalog, prices, tax rules, and recent customers fresh in the background. If the connection drops, the register sells against that cached snapshot. You control a cache-staleness and price-lock window in system configuration so offline prices always stay within merchant-approved bounds, and the cache refreshes automatically the moment connectivity returns.
Is this a Marketplace extension I can download and install myself?
No — and we are deliberate about that. Offline resilience touches your payment capture, tax rules, and inventory reconciliation, which are too install-specific for a generic one-click package. ECOSIRE builds, installs, and supports it directly on your Magento instance, then hands over clean, documented code that you own. There is no public Marketplace download link for this module.
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Magento 2 Offline POS Mode
A build-to-order Magento 2 / Adobe Commerce extension that lets your POS keep selling with no internet connection, then auto-syncs every queued order, payment, and stock movement back to Magento the moment connectivity returns.
- Continue completing sales with zero internet connection — the register never blocks on a network round-trip
- Local catalog, price, tax-rule, and recent-customer cache via Service Worker + IndexedDB, refreshed automatically while online
- Durable offline order queue with client-generated idempotency keys so reconnect replays can never double-post a sale
- Automatic queued-order sync on reconnect, replayed through guarded Magento service contracts (REST/GraphQL), with a cron safety net to catch missed flushes