Google Chrome - Increase Decrease Text Size
You can change the font size numerous ways in Chrome.
Method 1
Step 1. Click the Customize and Control button 
on the browser toolbar.
Step 2. Increase or decrease the font size by clicking the + (plus) or - (minus) in the Zoom section of the menu. The browser's default zoom level is 100%.
Step 2. Increase or decrease the font size by clicking the + (plus) or - (minus) in the Zoom section of the menu. The browser's default zoom level is 100%.
Method 2
Step 1. Click the Customize and Control button on the browser toolbar.
Step 2. Select Settings.
Step 3. Select Appearance from the menu on the left.
Step 4. You will be able to adjust the font size from Very small to Very large. The Default setting is Medium.