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migration / Checked 2026-10-18

Move long-running browser Functions from Lightpanda to Notte

A migration plan for long-running browser Functions: retain the business check, replace Lightpanda's provider-owned resources, and prove the Notte workflow before cutover.

Decide whether this move earns its cost

A deployed handler performs browser work longer than the caller is willing to wait. The execution must have an observable outcome even after the request ends.

Lightpanda introduces a browser-engine decision. Keep it on the shortlist when its supported actions fit the real pages you use; a successful CDP connection or text task does not establish visual or full-browser equivalence with the proposed Notte workflow.

Notte is worth evaluating when a Python handler's run history can replace ad hoc background-job tracking. Confirm the actual runtime and cancellation contract rather than borrowing browser session limits.

An existing worker or provider execution service may fit a long task better when its runtime and cancellation behavior are already proven. A successful browser connection is not a runtime entitlement.

Keep the result contract stable

A safe delayed handler, a short caller wait budget and a stored execution reference.

The application can determine the execution's terminal state and browser ownership after the caller stops waiting, then retrieve or cancel work through the documented path.

Preserve the evidence contract across the move: Caller timeout, execution reference, handler terminal state, cancellation result and browser release.

Map the workflow's resources

RequirementLightpandaNotte
Code executionExternal workerPython Functions
Scheduled executionExternal schedulerNative
Recordings / replayNot establishedDocumented

Sources: lightpanda.io [1] ↗docs.notte.cc [2] ↗docs.notte.cc [3] ↗

Where the code runs

Lightpanda: The reviewed documentation establishes a browser engine and hosted access, not a deployed Python Function contract. A separate automation process must have its own deployment, triggers and monitoring design.

Notte: Functions deploy Python code with a run() entry point. Invoke them over HTTP or with an SDK, inspect run history, and roll back code by redeploying an earlier version as the latest version.

Sources: lightpanda.io [1] ↗docs.notte.cc [2] ↗

Deployment ownership

Lightpanda: Compare hosted Lightpanda access with operating the engine yourself. The engine's supported APIs and website compatibility remain relevant in either deployment.

Notte: Use a remote browser from your existing process or deploy the browser automation as a Notte Function. These choices put lifecycle, scheduling and monitoring responsibilities in different places.

Sources: lightpanda.io [1] ↗docs.notte.cc [2] ↗

Pricing model

Lightpanda: Use the cloud billing unit and account limits for hosted access. A lower rate only helps if the target pages and required actions complete correctly on the selected engine.

Notte: The public usage rates are $0.01 per browser-hour, $0.05 per Function-hour and $10 per GB of managed proxy traffic. Paid plans return their price as usage credits. Price the relevant meters and plan eligibility for the workload.

Sources: lightpanda.io [1] ↗notte.cc [2] ↗

Cut over one responsibility at a time

For this Lightpanda-to-Notte migration, keep the business assertion outside provider resource management. Source profile, connection, file and execution IDs are not valid target IDs; use a documented transfer path or establish the corresponding resource in Notte.

Retain source job history and a rollback route until the target pilot passes. A migration checklist is not evidence that saved state or runtime behavior is automatically portable.

  • Record source caller, handler and browser timeouts as separate budgets.
  • Port the handler without changing the business completion check.
  • Prove post-timeout status lookup, cancellation and browser cleanup before moving long jobs.

Sources: lightpanda.io [1] ↗docs.notte.cc [2] ↗docs.notte.cc [3] ↗

A proposed acceptance case

This is an evaluation design, not a claim that this workflow has been executed successfully on every provider.

Part of the testRequired observation
Controlled inputA safe delayed handler, a short caller wait budget and a stored execution reference.
Pass conditionThe application can determine the execution's terminal state and browser ownership after the caller stops waiting, then retrieve or cancel work through the documented path.
Negative caseInterrupt the caller and request cancellation in a controlled test. Inspect both the handler outcome and whether its browser remains allocated.
Evidence to retainCaller timeout, execution reference, handler terminal state, cancellation result and browser release.

A reason to delay or keep the source

Interrupt the caller and request cancellation in a controlled test. Inspect both the handler outcome and whether its browser remains allocated.

Lightpanda: CDP connectivity does not establish complete Chromium compatibility. Validate rendering-dependent steps, downloads and browser features with the selected engine before a migration.

Delay cutover when the target's selected plan, required artifact path or supported website-account flow is not established. Resolve that gap before moving real jobs, even if the rate comparison favors the target.

Sources: lightpanda.io [1] ↗notte.cc [2] ↗

Keep comparing

Put the workflow to the test.

Try Notte Read the quickstart ↗