# What are the most common mouse shortcuts for Mozilla Firefox?

This is a list of the most common mouse shortcuts in Mozilla Firefox.  
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Ctrl+Shift+Scroll Down---

Close TabMiddle-click on Tab---

Decrease Text SizeCtrlCmd+Scroll up---

ForwardCtrl+Sift+Scroll up---

Increase Text SizeCtrlCmd+Scroll down---

New TabDouble-Click on Tab Bar---

Open in Background TabCtrlCmd+Left-clickMiddle-click---

Open in Foreground TabCtrlCmd+Shift+Left-clickShift+Middle-click---

Open in New WindowShift+Left-click---

Paste <span class="caps" id="bkmrk-url">URL</span> and GoMiddle-click on Tab---

Reload (override cache)Shift+Reload button  
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AltOpt+Left-click---

Scroll line by lineAltOpt+Scroll