True black and bright pixels
On a true #000000 signal, OLED pixels should switch off. A bright or coloured point is easier to see against this field, although dust and reflections should be ruled out first.
GUIDED CHECK / OLED
OLED Screen Test
A careful fullscreen route for OLED monitors, televisions, laptops and phones. Check true black, pixels, dark-gray uniformity, tinting and persistent image retention without leaving static patterns running unnecessarily.
SEQUENCE / 06
The patterns that matter most on OLED.
This sequence combines exact black, primary colours, near-black detail and low-gray fields. Each stage has a clear purpose, and the dedicated pages explain anything that deserves a second look.
01 1 stage 02 4 stages 03 1 stage 04 3 stages 05 5 stages 06 1 stage
Black screen
Pure #000000 with no overlays, compression or glow.
Dead pixel test
Cycle exact solid colours to find faulty subpixels.
Grayscale
Inspect neutral tones, shadow detail and highlights.
Screen uniformity
Spot dirty-screen effect, tinting and uneven light.
OLED burn-in
Look for persistent image retention without repair claims.
Contrast detail
Separate levels close to black and close to white.
OLED / EXPLAINED
What an online OLED test can reveal
OLED pixels emit their own light, so they behave differently from a backlit LCD. A browser can provide controlled pixel values for visual inspection, but it cannot measure luminance, colour accuracy or response time.
Near-black detail
Very dark steps help show whether shadow detail is being crushed. Room light, gamma, HDR processing and the selected picture mode all affect what should be visible.
Uniformity and tinting
Low-gray fields can reveal vertical bands, patches or pink and green tinting. Some variation is common; judge whether it remains distracting at a normal viewing distance.
Retention versus burn-in
Temporary image retention may fade after varied content or a normal compensation cycle. Permanent burn-in is persistent uneven wear and cannot be repaired by a website.
BEFORE / START
Prepare the OLED panel
- 01
Use the display normally for 20–30 minutes before judging uniformity.
- 02
Reduce reflections and start with your everyday picture mode and brightness.
- 03
Use ← and →, Space, click or touch to move through the patterns.
- 04
Keep the inspection brief; do not leave bright static fields on screen longer than needed.
FAQ / OLED
Questions before an OLED test.
01Can this OLED test damage my screen?
The sequence is deliberately brief and changes patterns frequently. Avoid pausing on a bright static field and follow the care guidance from your display manufacturer.
02Does pure black prove that my OLED is calibrated?
No. It only checks visible behaviour at a black input value. Calibration, luminance and colour accuracy require suitable measurement hardware.
03How do I tell retention from permanent burn-in?
Repeat the observation after varied normal content and the manufacturer’s normal compensation cycle. Temporary retention can fade; permanent uneven wear remains visible.
04Can I use the test on an AMOLED phone?
Yes. Modern mobile browsers can display the same controlled fields, though automatic brightness, colour modes and browser controls may influence what you see.
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