Ensuring the Browser Zoom Factor is 100 Percent

Introduction

True size calibration settings should always be determined with your browser zoom factor set to 100 percent. Having the browser zoom factor set to 100 percent is crucial to maintaining true size calibration. See Calibrating Monitors for True Size Image Display.

Note:

Browser zoom must be kept at 100 percent at all times. Using a zoom factor other than 100 percent can adversely impact the accuracy and usage of preset calibrations. Synapse displays an alert message if the browser zoom is not set to 100% when you initially open a study.

To check and set your browser's zoom factor, complete the following steps for Internet Explorer, Google Chrome, or Microsoft Edge in IE Mode.

Steps

Internet Explorer

• Open Internet Explorer and click View on the Internet Explorer menu and select one of the following options:

If you want to do this...	Choose this option...
Display the browser's status bar with the current zoom factor in all main browser windows. Note: This option is recommended so that you are always aware of the zoom factor and can reset it to 100 percent if necessary.	Highlight Toolbars and click the Status bar to display the current zoom factor in all main browser windows. Click the arrow next to the current zoom factor to display zoom factor options. If necessary, select the 100% option. The zoom factor immediately updates to match your selection.
Modify the zoom factor without displaying the browser's status bar. Note: If a browser window does not display a status bar, you can right-click the window's title bar, and select the Status bar option to display a status bar just for that window.	Highlight the Zoom option. If the zoom factor is not already set to 100 percent, select the 100% option. The zoom factor immediately updates to match your selection.

Google Chrome and Microsoft Edge in IE Mode

• To change the zoom factor in Google Chrome and Microsoft Edge in IE Mode, do any of the following:

If you want to do this...	Choose this option...
Ensure that zoom is set to 100% for high DPI (4k) monitors so that you do not get the zoom browser alert.	Right-click the Google Chrome shortcut icon and select Properties. Select the Shortcut tab. In the target text box, add the text after the double quotation marks:  /force-device-scale-factor=1 Click Apply.
Change the zoom factor.	Press CTRL+ (increases zoom) or CTRL - (decreases zoom) to change zoom factor. Note: When you change the zoom factor, Google Chrome/Microsoft Edge in IE Mode temporarily displays the current zoom factor in the upper-right corner.

Note:

Google Chrome and Microsoft Edge in IE Mode displays a magnifying glass icon when the zoom factor is not set to 100 percent. Hover over that magnifying glass to display the current zoom factor. The File menu always shows the current zoom factor.

Windows 7, 8.1 and Windows 10

In Internet Explorer, Google Chrome, and Microsoft Edge in IE Mode, a window that is opened from a window that is set to 100 percent zoom will also be set to 100 percent zoom. In Windows 8.1 Internet Explorer 11, if a new window opens on or is moved to a different monitor, the zoom factor might be different due to the scale factor.

• To keep the zoom factor at 100 percent across all monitors in a workstation, you must do the following:

If you want to do this...	Choose this option...
When using Windows 7.0, ensure that the zoom factor is set to 100 percent for mixed high and low resolution monitors in workstation.	In Windows 7, navigate to Control Panel > Appearance and personalization > Display. Select Smaller - 100%. Click Apply.
When using Windows 8.1, ensure that the zoom factor is set to 100 percent for mixed high and low resolution monitors in a workstation.	In Windows 8.1, navigate to Control Panel > Appearance and personalization > Display. Select Let me choose one scaling level for all my displays. Windows 8 displays different scaling levels. Select Smaller - 100%. Click Apply.
When using Windows 10, ensure that the zoom factor is set to 100 percent for mixed high and low resolution monitors in a workstation.	In Windows 10, navigate to Start > Settings > System > Display. For each monitor, move the slider to 100 percent for the option Change the size of text, apps, and other items: 100% (Recommended). Click Apply.

Additional Information

• Status bars do not display in dialog boxes. When opening a True Size Calibration dialog box, be sure it was opened from and on the same monitor as the window set to 100 percent zoom at the time.
• The CTRL - 0 shortcut key in Internet Explorer will change a window's zoom factor to 100% if all of your workstation's monitors have a similar resolution. However, on a mixed-resolution multi-monitor system, that shortcut key might change the zoom factor to something other than 100 percent. To verify the zoom factor is 100 percent, check the status bar or the main browser window's View menu.

 

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