Scans

Performance

How fast it loads and runs, on a phone and a laptop.

What it looks for

What slows the first load: pictures far bigger than the box they sit in, scripts that block the page while it loads, fonts that make the text flash.

What slows the app once it is open: work redone on every tap, a timer that re-measures the page many times a second, lists rebuilt from scratch when one row changes.

Phone speed score48 → 91
Time to first screen4.2 s → 1.1 s
Page weight3.1 MB → 640 KB
Requests42 → 12

How a scan goes

1

Pick an app and a level

In Creator Lair, choose the app, the kind of scan and the level: Quick, Polished or Deep.

Step 1: Pick an app and a level
2

The scan runs

About a minute, up to two for big apps. It reads the files, checks the code and writes the fixes. You can leave the page.

Step 2: The scan runs
3

See what it found

A report card first: how many problems, and the biggest ones. Then each problem, with the exact line and what goes wrong there.

Step 3: See what it found
4

Fix it with one paste

Every problem comes with a prompt written for the tool that built the app. Copy it, paste it, mark it fixed.

Step 4: Fix it with one paste
5

Upload the fix

Upload the new version from Creator Lair and the fixed app is live at the same address.

Step 5: Upload the fix

Three levels

  • Quick

    The things that slow the first load.

    5 to 20 credits, by app size

  • Polished

    A fuller pass over loading and running.

    10 to 30 credits, by app size

  • Deep

    Everything we look at.

    15 to 50 credits, by app size

Questions

My app is one small file. Is it worth it?
Small apps are usually fast to load. The scan is more about how the app runs once it is open, which a small file can still get wrong.
Who can run a scan?
Pro and Max members. A scan costs credits, and both get credits every month.
Does it fix the app for me?
No. It tells you what to fix and writes the prompt. You paste the prompt into the tool that built the app, then upload the new version.

Scan your app for performance

Scan an appAll four scans