Google Pixel 4a: CSS viewport of 393 × 851 px, resolution and responsive test

Google · Android 10.0 · Smartphone · 2020

All display characteristics of Google Pixel 4a, smartphone Google from 2020: CSS viewport of 393 x 851 pixels, 2.75x density, media queries, and one-click responsive test.

Test your site on Google Pixel 4a directly in your browser, without buying the device.

  • Over 70 devices included, including a model with the same format
  • Real viewport, User-Agent, and touch events
  • Also works on localhost and in pre-production
  • Exportable screenshots and videos
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Why test your site on Google Pixel 4a?

Very elongated screen

With a ratio of 19.5:9, Google Pixel 4a displays a lot of height for little width. Sections designed in landscape become endless columns, and full-screen visuals are poorly cropped.

2.75x density

With a density of 2.75x, Google Pixel 4a provides a useful benchmark to ensure your images remain sharp without serving unnecessarily large files.

Actual media queries

The 393 x 851 pixels viewport of Google Pixel 4a rarely matches the round breakpoints of frameworks. It is precisely between these values that layouts break.

CSS viewport resolution of Google Pixel 4a

This is the resolution that interests designers and developers the most, as it determines breakpoints and the definition of media queries. In practice, it's the only one mentioned in a stylesheet.

  • 393 pixels in width
  • 851 pixels in height

The height remains indicative: Safari, Chrome, and other mobile browsers reduce the visible area with their address bar, which folds on scroll.

Be cautious when analyzing your statistics: some tools only report the manufacturer resolution, never the CSS viewport presented here.

Pixel density of Google Pixel 4a

2.75

The device pixel ratio of Google Pixel 4a is 2.75.

In other words, a 1-pixel square in CSS occupies 2.75 pixels on the panel. An image exported at actual size will appear blurry.

Manufacturer resolution of Google Pixel 4a

This resolution is the hardware's. It explains the display's sharpness, but it's never the one to target in a media query.

  • 1080 pixels in width
  • 2340 pixels in height
  • 19.5:9 Screen ratio

443 pixels per inch (ppi) · 5.8 inches diagonal, or 14.8 cm

Media queries and code snippets for Google Pixel 4a

These snippets are generated from the exact characteristics of Google Pixel 4a. Copy them directly into your stylesheet or configuration.

CSS media query

Targets screens whose width matches that of Google Pixel 4a and models of the same format.

@media only screen and (min-width: 393px) and (max-width: 850px) {
  /* Google Pixel 4a */
}

Density media query

Serves high-resolution images to screens of at least 2.75x.

@media only screen and (-webkit-min-device-pixel-ratio: 2.75),
       only screen and (min-resolution: 264dpi) {
  /* High-density images and icons */
}

Tailwind configuration

Adds a named breakpoint at the exact width of Google Pixel 4a.

// tailwind.config.js
module.exports = {
  theme: {
    screens: {
      'google-pixel-4a': '393px'
    }
  }
}

JavaScript detection

Detects format and density client-side.

const isDeviceWidth = window.matchMedia('(min-width: 393px)').matches;
const isHighDensity = window.devicePixelRatio >= 2.75;

Meta viewport tag

Essential for Google Pixel 4a to use its CSS viewport and not a simulated width of 980 pixels.

<meta name="viewport" content="width=device-width, initial-scale=1">

Free Google Pixel 4a simulator

Mobile FIRST does not yet include Google Pixel 4a, but a model with the same format is available. You can already validate your breakpoints and display density.

This is where the difference with Chrome DevTools' responsive mode is seen: DevTools resizes a window, the extension replicates the device's browser and allows exporting shareable screenshots and videos.

  1. 01 Install the extension Add Mobile FIRST to Chrome, Firefox, or Edge. Installation is free and requires no account.
  2. 02 Open the page to test Go to the URL to check, including a local address like localhost:3000.
  3. 03 Choose Google Pixel 4a Select Google Pixel 4a from the list of devices. The viewport switches to 393 x 851 pixels, and the mobile User-Agent is applied.
  4. 04 Check rendering Scroll, change orientation, test your forms, then capture an image or video to share.

Models sharing the format of Google Pixel 4a

These 4 devices share exactly the viewport of 393 x 851 pixels and the 2.75x density of Google Pixel 4a. Their CSS rendering is therefore exactly the same: what you validate on one is valid on all others.

Comparison with similar models

The neighboring formats of Google Pixel 4a are the ones to test right after, as they reveal poorly placed breakpoints.

Comparison of resolutions of Google Pixel 4a and nearby models
Model CSS Viewport Pixel density Manufacturer resolution
Google Pixel 4a 393 x 851 2.75x 1080 x 2340
Google Pixel 6 PRO 360 x 780 4x 1440 x 3120
Google Pixel 4 393 x 830 2.75x 1080 x 2280
Apple iPhone 12 390 x 844 3x 1170 x 2532
Apple iPhone 12 Pro 390 x 844 3x 1170 x 2532
Apple iPhone 13 390 x 844 3x 1170 x 2532
Google Pixel 5 393 x 851 2.75x 1080 x 2340

Frequently asked questions about Google Pixel 4a

What is the CSS viewport resolution of Google Pixel 4a?

The CSS viewport of Google Pixel 4a measures 393 pixels wide and 851 pixels high. This is the width to use for defining your media queries, not the manufacturer's resolution.

What is the pixel density of Google Pixel 4a?

The device pixel ratio of Google Pixel 4a is 2.75. Each CSS pixel is thus displayed by 2.75 physical pixels, requiring you to provide your images in 2.75x to keep them sharp.

What is the screen resolution of Google Pixel 4a?

The panel of Google Pixel 4a displays 1080 x 2340 physical pixels. This is the value reported by most analytics tools, while your CSS works on a viewport of 393 x 851 pixels.

Which devices have the same viewport as Google Pixel 4a?

4 other models share exactly the viewport of 393 x 851 pixels and the 2.75x density of Google Pixel 4a: Google Pixel 5, Xiaomi Redmi Note 7, Xiaomi Redmi Note 8, Xiaomi Redmi Note 8 Pro. A rendering validated on one is valid on all others.

How to test my site on Google Pixel 4a without the device?

Install the Mobile FIRST extension on Chrome, Firefox, or Edge, then select Google Pixel 4a. Your page displays in a viewport of 393 x 851 pixels with the corresponding mobile User-Agent, in two clicks and for free.

What is the difference with Chrome DevTools' responsive mode?

DevTools resizes the window and applies partial emulation. Mobile FIRST additionally applies the User-Agent of Google Pixel 4a, touch events, scroll behavior, and the actual appearance of the device, and allows capturing directly usable images and videos.

Can I test a localhost address on Google Pixel 4a?

Yes. The extension works on any URL open in your browser, including localhost:3000, 127.0.0.1, or a password-protected pre-production environment.

Do you need to buy a Google Pixel 4a to test your site?

No. The simulation covers the vast majority of development needs at no cost. A final test on a real device is still recommended before critical production deployment, but it's no longer necessary for each iteration.

Which media query to use to target Google Pixel 4a?

A media query on the exact width targets Google Pixel 4a: @media only screen and (min-width: 393px). Combine it with the pixel density to precisely target this model and those sharing its format.

Continue testing on another model

All Google resolutions → All devices →

Other Google models

Test your site on 77 devices, directly in your browser

Without buying a single phone, without creating an account.

  • 77 devices available upon installation
  • Real viewport, User-Agent, and touch events
  • Also works on localhost and in pre-production
  • Exportable screenshots and videos
Install the extension

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