Viewport Statistics Report

ScreenSize.net

3 min read Original article ↗

Anonymous aggregate viewport measurements from ScreenSize.net browser sessions, with sample size, quality exclusions and methodology shown alongside the results.

Aggregate sessionsSnapshot from 2026-09-14Quality rules v1

Status

Showing a partial snapshot

Snapshot samples shown

751

Snapshot coverage

Partial export

Collection period

Snapshot from 2026-09-14

Key findings

What this sample shows

These observations describe qualified ScreenSize.net sessions during the reporting period. They are not global device or browser market-share estimates.

  1. 01

    Desktop viewport reality

    The most common desktop viewport is 1920 × 920 CSS pixels, representing 15.7% of 648 snapshot samples shown.

  2. 02

    Mobile width concentration

    The most common mobile viewport width is 400px, representing 64.1% of 103 snapshot samples shown.

  3. 03

    Display density

    The most common device pixel ratio bucket is 1.00×, representing 64.6% of 751 snapshot samples shown.

Coverage

Samples by environment

Each environment is evaluated independently. Rankings stay hidden until that environment reaches the minimum display sample.

EnvironmentSnapshot samples shownPublication status
Desktop648Distribution available
Mobile103Distribution available

Legacy tablet samples are excluded because the first classifier could mistake touch-enabled desktop computers for tablets.

Clear dimension anomalies are excluded from rankings but remain in aggregate storage for auditing.

Desktop

Desktop viewport distribution

648 snapshot samples shown.

Most common viewport widths

  1. 1920 px30.7% · 199

  2. 1280 px13.3% · 86

  3. 1520 px9.7% · 63

  4. 800 px5.4% · 35

  5. 2560 px5.4% · 35

  6. 1480 px5.2% · 34

  7. 1360 px4.8% · 31

  8. 1440 px4.2% · 27

Most common viewport pairs

  1. 1920 × 92015.7% · 102

  2. 1920 × 10806% · 39

  3. 800 × 6005.4% · 35

  4. 1920 × 9605.4% · 35

  5. 1280 × 7204% · 26

  6. 2560 × 12803.9% · 25

  7. 1280 × 8003.7% · 24

  8. 1520 × 7003.4% · 22

Mobile

Mobile viewport distribution

103 snapshot samples shown.

Most common viewport widths

  1. 400 px64.1% · 66

  2. 420 px20.4% · 21

  3. 380 px9.7% · 10

  4. 600 px2.9% · 3

  5. 800 px2.9% · 3

Most common viewport pairs

  1. 400 × 66031.1% · 32

  2. 400 × 7009.7% · 10

  3. 400 × 7208.7% · 9

  4. 420 × 8007.8% · 8

  5. 380 × 6206.8% · 7

  6. 400 × 7804.9% · 5

  7. 420 × 7204.9% · 5

  8. 420 × 7804.9% · 5

Density

Device pixel ratio

Methodology

How to read this report

The report describes this site's measured browser sessions, not global device or browser market share.

Collection and privacy

A browser tab contributes at most one sample during its session. Measurements are rounded into monthly aggregate buckets. No IP addresses, user IDs, precise timestamps or full user-agent strings are stored. Global Privacy Control and Do Not Track signals are honored.

Quality and limitations

Viewports wider than 6,000 CSS pixels or taller than 4,000 are excluded from published distributions. Historical DPR values are normalized to 0.05 steps. Device class is inferred locally and remains an approximation; legacy tablet classifications are excluded.

Audit details

Snapshot samples shown
763

Dimension anomalies
12

Snapshot captured
2026-09-14

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