Performance & Overhead

Minimize impact on the user experience.

Slow performance kills conversions. We’re hyper-focused on minimizing any performance impact on customers. Get all the details below or better yet: Put us to the test.

Performance on web.

Low impact tag

Our web tag is typically 70-80 KB in size and loads within milliseconds. It’s loaded asynchronously, once per session, and available in the browser cache for all pages.

No perceptible impact

Users won’t get stuck waiting for Quantum Metric to load. Our tag defers processing until your page is ready for users to interact with it.

Performance on native apps.

Lightweight SDK

Our Android SDK is about 200KB. Our iOS SDK leverages bitcode so it compiles down to 1MB in the final build.

Patented, highly performant data capture

We translate native app views into HTML (DOM), which reduces memory and CPU consumption, as well as data plan usage.

Minimal FPS impact

Your native app UI stays quick and responsive. A typical enterprise customer will see a 8-9% decrease in frames per second (FPS) in their mobile app.

How we transmit data.

With a one-time tag or SDK deployment, Quantum Metric will start capturing an expanse of data (no future code configuration required).


All data is compressed before it’s sent to Quantum Metric. Even customers on the slowest networks won’t notice.

Frequent small batches

We send data in small, frequent batches to ensure our tag doesn’t affect page load.

Secure encryption

All sensitive data is encrypted with a customer’s public key and all session replay data is sent over TLS/HTTPS.


We scale to meet your traffic needs. With Google BigQuery as our data warehouse, you can query across petabytes of data in seconds. Read the Google Cloud case study to learn how we meet the needs of the largest enterprise customers.

Frequently Asked Questions