ways to make the text bigger

if i was reading text, like this, on a web page. and i was on my laptop. and i felt a little discomfort at the small size of the words on my retina, if i was straining a little to read them, how could i make them larger? here is a list:

• i could move the screen closer to my face. sometimes i do this, but rarely. it's more enjoyable since having a high resolution screen - or maybe it's less enjoyable. i do like it when the materiality of the digital insists itself - i enjoy it when i can solve a problem by using a physical ruler on a digital screen. tracing onto thin paper would be a joy but feels so risky - the ink or the pressure leaking through. i am someone who lives with perpetual smudges on my screen, though, it is not an immaculate portal.
• i could press Cmd-+. this is the classic browser zoom, it does something to the CSS and then triggers a rerender. enjoyable how this alters the logic of the page at a deep level. but i do find i don't trust this fully - so many layouts don't rely upon the meaning of em or rem at a deep enough level to adjust properly. Downpour doesn't, for instance, although the bottom bar does increase in size.
• i could use my trackball mouse (an Ergo M575) to put the cursor over the main body of text and then hit one of the secondary buttons (the bottom one). this changes the field of view of the browser window so that the span of text under the cursor takes the full width of the screen. i do this often, although it does have the disadvantage that it seems to break scrolling with the scrollwheel. i'm not sure exactly how to characterise how scrolling is broken, but i do dwell on the issue.
• i could reach a little further, to the trackpad, and reverse-pinch (spread, i guess) two fingers on the touchpad. this does a similar sort of zoom, except now i have control over the degree of zooming. i don't know whether it would be good, or indeed be funny, if i could rotate a webpage this same way.
• i can hold Control and then scroll (either with my trackball mouse or on the touchpad). this, on my laptop, causes OS X to zoom the view on the monitor. this is an accessibility setting i enabled when i was working with a colleague who had vision issues and needed to have his computer zoomed in to a great degree to make out text - it was handy to have about in case i needed to show him something. since then i have left it enabled because i find it often comes in handy. so often i do want to look at something more closely, and the controls within each individual application i find leave something to be desired.

well, that's all the ways i can think of for now. or, i can think of more ways (go to a reader view, modify the CSS using the web inspector or an extension, copy elsewhere where the text is more modifiable, use some kind of lens between my eye and the screen, etc etc) but i don't use any of those on a regular basis.

why am i posting this? i guess because i find it interesting how many ways there are to accomplish a straightforward task on the computer, and how designing something reasonably straightforward (render some text on a web page) can interact with various of those ways, and how thinking through a widely usable interface requires thinking through all the idiosyncratic ways people use their devices. selecting text, for instance, which some people (including me) do as a kind of digital fiddling while reading. so easy to add some extra behaviour to this kind of thing, and thereby discomfort us (or the people you have now subjected to our fiddling).