Quick wins for a faster PC:
Repair Windows errors before they cause bigger problemsFix Now →Scan for outdated or missing drivers - takes under a minuteDriver Scan →Clear out junk files and repair common Windows errorsFree Scan →Use BrowserStack Percy to capture the same page in selected browsers, compare each render with an approved baseline, and review browser-specific differences before approving a change. Choose Percy-managed browser settings for a convenient managed browser set; use BrowserStack Automate when you need to specify the operating system and browser versions yourself.
Choose how to select browsers
Percy offers two approaches, depending on how much control you need over the rendering environment.
Use Percy-managed browser settings for a managed set
For new projects, BrowserStack documents Chrome, Firefox, Edge, and Safari as default browser options. Percy manages and updates the available browser versions and operating systems. You select browsers, but you do not choose the underlying operating system in this mode. See BrowserStack’s cross-browser visual testing documentation for current settings and availability.
Use Automate when OS and version matter
If your test must cover a specific operating system, OS version, browser, and browser version, configure those dimensions through BrowserStack Automate’s platform configuration. Percy’s documentation says to include all four: OS name, OS version, browser name, and browser version. This is the better fit when you are validating a known customer environment or investigating a difference that may be caused by the OS rather than the browser alone.
Do these 3 things before closing this tab:
1Fix the driver behind crashes, sound loss and screen glitches2Repair Windows errors before they cause bigger problems3Scan for outdated or missing drivers - takes under a minute#1 Best Overall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.
BrowserStack describes Automate and App Automate as routes to broader browser, viewport, and device coverage. Confirm the current framework and platform support before designing a matrix; available combinations can change.
Capture comparable page states
For a useful comparison, each browser needs to render the same page in a comparable state. Keep the URL, application data, login state, viewport, and capture timing consistent across runs. Otherwise, a diff may show content or timing changes rather than a browser rendering issue.
- Configure the browser set in Percy project settings, or configure the required OS and browser dimensions in Automate.
- Run your visual test so Percy captures a page snapshot.
- Let Percy render that snapshot in each selected browser. Each browser produces its own screenshot and comparison.
- Check the run’s screenshot usage: each browser snapshot counts toward monthly usage. BrowserStack does not establish current plan prices or allowances in the cited cross-browser documentation, so check its live account and pricing information before estimating cost.
BrowserStack supports a BrowserStack SDK route, which combines functional and visual testing in its workflow, and a Percy SDK route for manual integration with supported application and end-to-end testing setups. Choose based on your existing test stack, and confirm current framework support in BrowserStack’s supported SDKs documentation.
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.
Or skip the browser setup
For a one-off screenshot or a simple capture endpoint, ScreenshotNeo is a separate screenshot API and MCP server—not a replacement for Percy’s browser-by-browser baseline review. Its API returns a screenshot or PDF from one GET request. It removes cookie banners, popups, and chat widgets before the shot; bot checks, blank pages, and failed loads are never billed; and its MCP server lets AI agents take screenshots. The free plan includes 1,000 screenshots a month with no card; paid plans start at $5 for 3,000.
Free tools Windows power users keep installed
One-click scans. No signup required.
See the ScreenshotNeo API documentation for request options. Example using cURL:
curl -G "https://api.screenshotneo.com/v1/shot" -d access_key=YOUR_API_KEY --data-urlencode url=https://stripe.com -o shot.webpStart with 1,000 free screenshots a month, with no card required.
Compare each browser with the right baseline
A baseline is an earlier approved render. Percy selects a base build according to the project’s baseline strategy, so a diff is meaningful only when the comparison is against the intended approved state. BrowserStack documents two approval scopes:
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.
| Baseline strategy | Approval scope | Useful when |
|---|---|---|
| Git baseline management | Whole build | You want approval at the build level. |
| Visual Git | Individual snapshots | You want to approve snapshots independently. |
When you add a browser, its first run has no historical baseline for that browser. The new browser needs a baseline from a subsequent build before Percy can provide a historical comparison for it. See BrowserStack’s baseline management guide.
Outdated Drivers Are Slowing You Down
One free scan finds every outdated or missing driver and matches the right update for your exact hardware.Free scan · exact hardware matchWindows Errors? Fix Them Before They Spread
Repair common Windows errors and clear accumulated junk for a smoother, more stable PC - no reinstall needed.Free scan · no reinstallReview and decide whether to approve
Inspect results browser by browser. In Test Companion’s web visual-analysis workflow, reviewers can use side-by-side, overlay, and diff views, and switch among captured browsers and widths. The interface helps expose where pixels differ; it does not determine whether a difference is correct.
- Open the visual result for the build and choose a browser snapshot.
- Use the available comparison views to locate the changed area and understand its extent.
- Check whether the change is intended, a genuine regression, or a rendering-environment difference.
- Approve only the intentional changes. If you find a regression, leave the build unapproved, fix the application, and run the test again.
Approval belongs to the reviewer. It changes what Percy treats as an accepted visual state; it should not be used merely to clear a failing diff. BrowserStack describes the visual-analysis workflow in its web visual analysis guide and its broader visual analysis documentation.
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
Tell rendering differences from application regressions
A browser-specific difference can be the regression your test is meant to catch. It can also reflect the rendering environment. BrowserStack specifically identifies system fonts, form controls, and scrollbars as examples of OS-level differences. In Percy-managed mode, the underlying operating systems are managed and not user-selectable; use Automate configuration when explicit OS comparison is required.
Percy’s managed-browser interface identifies the browser name and version, while BrowserStack updates the underlying managed environment over time. When a diff appears, check the browser and version shown for the capture and consider whether an environment update or native control accounts for it before changing application code.
Set up a reliable comparison workflow
- Keep capture inputs stable. Use the same page, data, state, viewport, and timing in every run so that a browser comparison isolates rendering differences.
- Pick the approval scope deliberately. Choose whole-build Git approval or per-snapshot Visual Git approval to match how your team reviews changes.
- Budget for browser coverage. Each selected browser adds a screenshot counted toward monthly usage. Check current account terms rather than relying on an old allowance or price.
- Prefer broad coverage where appropriate. BrowserStack recommends verifying the full page for broad visual coverage and using Percy’s Recommended match level for routine comparisons. These are vendor recommendations, not independent comparative test results.
- Keep the integration adaptable. BrowserStack recommends isolating screenshot calls in a wrapper so integration changes remain localized, and using the BrowserStack device grid for cross-platform checks.
Troubleshoot common comparison problems
A new browser has no useful diff
Cause: The browser has no prior approved render to compare against. Fix: Run another build so the new browser can establish a baseline, then compare subsequent captures against it.
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.
The diff shows fonts, controls, or scrollbars changing
Cause: The difference may come from OS-level rendering rather than your CSS. Fix: Check which browser and version Percy reports and whether the selected environment is managed; if the OS itself must be controlled, configure OS and browser details through Automate.
Different content appears in different browser captures
Cause: The page state, data, viewport, or capture timing may not match across runs. Fix: Stabilize those inputs and rerun before treating the diff as a browser defect.
A genuine regression is marked as a change
Cause: Percy reports visual differences; it cannot decide whether they are acceptable. Fix: Do not approve the build. Correct the application and run the test again.
Framework configuration is unclear
Cause: SDK support and integration configuration depend on the framework and can change. Fix: Check the current supported SDKs page and the relevant integration documentation before adopting a sample configuration.
Quick Recap
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.
