Screen Test Pro 2.0: same URLs, new everything

Screen Test Pro has been quietly doing its job since the first version shipped: fullscreen colors for hunting dead pixels, a particle benchmark, device specs, fourteen languages. Today’s release is a ground-up rebuild — the first thing we’ve shipped that we’d call version 2.0 without hedging.

What’s new

The benchmark grew a second tier. The eight original effects — the galaxy, the aurora, the snow crystals, all of them — are still here, ported faithfully and scored in their own Classic mode. Above them sits a new Signature tier on WebGL2: a million-particle nebula, a neon city flythrough, raymarched liquid chrome, colliding debris streams, and a staged supernova. It’s the difference between a screensaver and a light show, and it’s what the Standard benchmark now runs.

The measurement grew up with it. Frame-time percentiles over statistics windows, a load ladder that brackets your device’s actual ceiling, thermal-drift detection, versioned scores, and hard timeouts on every state — the methodology is public, and so is what a browser benchmark honestly can’t tell you.

The design stopped apologizing. The new interface is built like test equipment: dense, dark, hairlines instead of shadows, your display’s live readout in the header instead of a marketing hero. Everything a screen tester needs sits in the first viewport.

Tools got real homes. The dead pixel test now lives on its own page with actual guidance — what each color reveals, what’s fixable, what warranties cover — and there are articles for the questions we kept seeing people ask.

Anonymous hardware stats, with the cards face-up. Finishing a scored run can now submit one anonymous sample — score, coarse hardware family, screen numbers — toward public statistics about how real devices perform in browsers. The exact field list is shown before the run starts, “run without submitting” is one click, and the privacy policy was rewritten to match. No thresholds get published until there’s enough data for the numbers to mean something.

What didn’t change

Every URL. All fourteen languages, with their translations preserved exactly. The eight Classic effects. The no-install, no-account, works-on-the-seller’s-phone philosophy. And the fine print: the tests themselves still run entirely on your device.

If something looks off — a layout glitch in your language, a scene that misbehaves on your GPU — tell us: admin at screentest.pro. Bug reports with a browser name and a screenshot get fixed first.