Free tools Windows power users keep installed
One-click scans. No signup required.
A screenshot’s pixel width and the browser’s CSS viewport width are different measurements. The viewport controls page layout; device scale and screenshot settings control how that layout maps to image pixels. Mobile emulation, the page’s viewport meta tag, and full-page or clipped capture can also affect what you see. To find the cause, compare the configured CSS viewport with the saved image dimensions and check each setting that can change either one.
First, identify which width is wrong
There are three separate things to compare:
- CSS viewport width: the width, in CSS pixels, that the browser makes available for page layout.
- Screenshot raster width: the number of pixels across the saved image. Device scale factor and screenshot scale can make this differ from the CSS viewport width.
- Capture extent: the region included in the screenshot: the visible viewport, a specified clip, or the full scrollable page.
A saved image that is twice as wide numerically as the requested viewport may reflect a device scale factor of two; it does not, by itself, prove that the browser laid out the page at twice the width. Check the browser configuration and the image dimensions separately.
Check the viewport and device settings
In Playwright, inspect the viewport configured for the browser context, any device preset, and any later call to page.setViewportSize(). The order matters: a preset can provide a viewport that later code overrides. Playwright documents viewport and device-emulation settings in its API parameters and emulation guide.
Then compare the CSS viewport width with the output image width. Playwright’s screenshot scale option determines how CSS pixels map to output pixels: device-scale capture can produce more raster pixels than the CSS viewport, while CSS scale produces one image pixel per CSS pixel. Check the Page API for the available viewport and screenshot options.
#1 Best Overall
- Read Before You Buy — No Video Output: These adapters support charging and USB 2.0 data transfer, but cannot transmit video signals. Except for standard USB webcams (which use USB data only), they are not compatible with HDMI/DisplayPort cables, video-capable USB-C hubs, or docking stations with video output.
- Convert USB-A Ports to USB-C: Designed to connect USB-C earphones, cables, flash drives, card readers, and other USB-C accessories to standard USB-A ports. Plug-and-play with no drivers or software required.
- Aluminum Alloy Housing: Built with a sturdy aluminum alloy shell that aids in heat dissipation and protects against daily wear and scratches. Designed to maintain a stable and secure connection.
- Compact & Travel-Friendly: The ultra-compact design allows the adapter to stay plugged into your device without blocking adjacent ports or adding bulk, reducing wear and tear on your original USB ports.
- 12-Month Warranty: Backed by a 12-month manufacturer warranty for peace of mind. Designed to meet strict quality control standards for reliable everyday performance.
Check mobile emulation and the page’s viewport meta tag
Mobile behavior involves both automation settings and page markup. In Playwright, isMobile controls whether the page’s meta viewport tag is taken into account. On narrow-screen browsers, without an appropriate viewport declaration, the page may use a wider virtual layout viewport and then scale down to fit. MDN describes this behavior and the viewport meta element.
A common declaration for responsive pages is:
<meta name="viewport" content="width=device-width">Check the actual HTML head and the automation context together. Changing the requested viewport alone may not produce the expected mobile layout if mobile emulation or viewport metadata differs from what you intended.
Rank #2
- 5-in-1 USB-C Hub: Experience comprehensive connectivity featuring a Power Delivery input, two USB-A 2.0 ports, a USB-A 3.0 port, and an HDMI port. (Note: The USB-C power delivery input port is only for connecting an external wall charger to power your laptop and cannot power peripheral devices.)
- 90W Pass-Through Charging: Achieve optimal charging with 90W pass-through power to your laptop, supported by a total input of 100W, with the hub reserving 10W for operational efficiency. (Note: Wall charger not included.)
- Quick Data Transfers: Accelerate your productivity with rapid data transfers using a high-speed 5Gbps USB 3.0 port and two 480Mbps USB 2.0 ports.
- 4K HDMI Display: Enhance your visual experience with a hub capable of delivering 4K resolution at 30Hz in both mirror and extend modes. Please note that this hub is compatible with MacBook (macOS 12 and newer), Windows 10 and 11, ChromeOS, and laptops equipped with DP Alt Mode and Power Delivery. Note: This device is not compatible with Linux.
- What You Get: Anker USB-C Hub (5-in-1, 4K HDMI), welcome guide, 18-month warranty, and our friendly customer service.
Check whether the capture is clipped or full-page
A viewport screenshot captures the visible area; a full-page screenshot can extend across the page’s scrollable content; and a clip can specify an output region distinct from the viewport. Confirm which mode is in use before treating the saved image’s dimensions as the browser viewport dimensions. Playwright documents its screenshot options in the Page API; Puppeteer documents clipping and full-page options.
Collect the settings needed to isolate the cause
Record these values from the same run. Without them, the image width alone cannot establish why a particular screenshot differs from expectation.
Recommended Free Tools
Rank #3
- Sleek 7-in-1 USB-C Hub: Features an HDMI port, two USB-A 3.0 ports, and a USB-C data port, each providing 5Gbps transfer speeds. It also includes a USB-C PD input port for charging up to 100W and dual SD and TF card slots, all in a compact design.
- Flawless 4K@60Hz Video with HDMI: Delivers exceptional clarity and smoothness with its 4K@60Hz HDMI port, making it ideal for high-definition presentations and entertainment. (Note: Only the HDMI port supports video projection; the USB-C port is for data transfer only.)
- Double Up on Efficiency: The two USB-A 3.0 ports and a USB-C port support a fast 5Gbps data rate, significantly boosting your transfer speeds and improving productivity.
- Fast and Reliable 85W Charging: Offers high-capacity, speedy charging for laptops up to 85W, so you spend less time tethered to an outlet and more time being productive.
- What You Get: Anker USB-C Hub (7-in-1), welcome guide, 18-month warranty, and our friendly customer service.
- Browser and version, plus automation framework and version.
- Requested viewport width and height in CSS pixels.
- Any device preset and whether a later viewport-setting call overrides it.
- Device scale factor and screenshot scale.
- Whether mobile emulation is enabled and the page’s viewport meta content.
- Whether the capture is viewport-only, full-page, or clipped.
- The saved image’s pixel dimensions.
Troubleshoot common width mismatches
- Image is wider than the requested CSS viewport: compare the raster width with the device scale factor and screenshot scale before changing the viewport.
- Page layout behaves as if the viewport is wider on mobile: check the Playwright
isMobilesetting and whether the HTML includes an appropriate viewport meta declaration. - Configured width looks right but the result does not: look for a device preset or a later
page.setViewportSize()call that changes the effective viewport. - Screenshot dimensions exceed the visible window: check for full-page capture or a clip region; those define the captured extent rather than simply reporting the visible viewport.
- You cannot determine the cause from the image: capture the configuration and HTML head information listed above. A raster image does not reveal the CSS viewport width on its own.
Or skip the browser setup
For a screenshot from one GET request, ScreenshotNeo accepts a URL and returns an image or PDF. This example saves a WebP screenshot of Stripe; see the ScreenshotNeo documentation for request options.
Quick Recap
Best Value
- 5-in-1 Connectivity: Equipped with a 4K HDMI port, a 5 Gbps USB-C data port, two 5 Gbps USB-A ports, and a USB C 100W PD-IN port. Note: The USB C 100W PD-IN port supports only charging and does not support data transfer devices such as headphones or speakers.
- Powerful Pass-Through Charging: Supports up to 85W pass-through charging so you can power up your laptop while you use the hub. Note: Pass-through charging requires a charger (not included). Note: To achieve full power for iPad, we recommend using a 45W wall charger.
- Transfer Files in Seconds: Move files to and from your laptop at speeds of up to 5 Gbps via the USB-C and USB-A data ports. Note: The USB C 5Gbps Data port does not support video output.
- HD Display: Connect to the HDMI port to stream or mirror content to an external monitor in resolutions of up to 4K@30Hz. Note: The USB-C ports do not support video output.
- What You Get: Anker 332 USB-C Hub (5-in-1), welcome guide, our worry-free 18-month warranty, and friendly customer service.
Rank #4
- Dual Converters, Infinite Potential：Includes 2× USB C male to USB A female adapters and 2× USB A male to USB C female adapters. Perfect for a wide range of uses—tablets with Bluetooth keyboards, expand USB ports on macbook, and more. Two different converters for all your daily needs
- Next-Level 10Gbps & 3A Charging: No more slow 480Mbps, this usb to usb c adapter has a transfer speed of up to 10Gbps, allowing you to do more transferring in less time. This usb adapter fits both USB A and USB C charger, supporting up to 3A fast charging
- Upgraded Exquisite Craftsmanship: With an aluminum alloy housing and metal connector, the usbc to usb adapter is extremely durable and sturdy. Rigorously tested to withstand more than 10,000 times of plugging and unplugging, ensuring long-lasting performance
- Broad Compatible: The usb c to usb adapter widely supports all USB C/ USB A devices like laptops, tablets, cellphones, car chargers, and phone chargers. Such as compatible with MacBook Pro/Air 2023/2022, Thunderbolt 4/3 Devices,Apple MagSafe Watch 9/8/7/SE/Ultra, iPad Pro 2022/2021, Samsung Galaxy S23/S20/S10, and iPhone 17/16/15 Pro. Plug and play
- Please Note: To reach 10Gbps speed, keep the cable under 3.3 ft. For USB A Male to USB C adapters, try flipping the USB C connector. USB C Male to USB A adapters support bidirectional 10Gbps transfer within 3.3 ft
curl -G "https://api.screenshotneo.com/v1/shot" -d access_key=YOUR_API_KEY --data-urlencode url=https://stripe.com -o shot.webpScreenshotNeo removes cookie and consent banners, newsletter popups, and chat widgets before capture; each cleanup step can be turned off. Bot checks, blank pages, timeouts, failed loads, and cache hits cost nothing, and response headers identify the page verdict and whether the request was billed. Its MCP server gives AI agents tools for screenshots, page information, and PDF capture. The free plan includes 1,000 screenshots a month with no card; paid plans start at $5 for 3,000.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
