Two underappreciated modifications of the standard keyboard layout are the split backspace and the split spacebar. I previously discussed disused or less used keys on the keyboard and wondered why we still need them. Now I’m starting to consider doing something about it.

The split backspace takes the 2u(size of two single keys), and replaces it with two single keys…giving you an extra. This creates one of two choices for those using an ANSI keyboard(as the ISO has the giant Enter key). You can have a 1U(single key) backspace and an extra keyNow…having that key somewhere is important…but do you use it enough to give it such a big key?

You can take a lesson from the Happy Hacker Keyboard layout and you can move the backspace down one row to where the \ | key is, and move the \ | up to a single key on the top row. On that layout, by default, the key is a delete key, although some people switch to backspace. Backspace removes characters to the left of the cursor, delete to the right.

The right size backspace and delete keys aren’t available on all keycap sets…but are certainly options if you look.

The second popular split option is the split spacebar. Spacebars are traditionally 6.25U, though you can get 7U on some keyboards. That is a lot of potentially wasted real estate. As I type this on a traditional spacebar, I’m watching my tendency to use both my left and right thumbs to hit the spacebar…that is one reason why they are so long. So…what about the split? There are a few configuration options you can get if you hunt around. The most common is just a straight split that replaces the spacebar with two half size ones. The advantage of this involves layers…the ability to use left and right spacebar in different key combinations. The second, is either having a smaller spacebar(3U for example), to get more keys on right and left. Or…having a split spacebar with a single key in the middle. Sounds interesting to try in the future. More keys, even if duplicated, leaves more flexibility in future. Also, the large stabilizer to support a full size spacebar is often the loudest key on your keyboard…so there may be sound advantages.

Split shift is a common feature on 65% and smaller keyboards. This involves shrinking the right shift key to add a 1U key to its right. This is usually used as an up arrow or a layer(FN) key depending on the configuration. ISO keys split the left shift to put an extra key to its right, which is usually the  \ | key. There are advantages of even if you don’t use it the way the ISO layout does.

Choice is important. These less popular options aren’t always less popular because they aren’t good ideas…but because the software customization to take advantage of them didn’t override the traditional keyboard layout. With QMK/VIA and other ways of configuring keyboard behavior, having these options means more choice when you customize.

If you can only find the keycaps, that is…

To recap, I covered the major sizes…

• Full-size
• Tenkeyless(TKL) – A tenkeyless is the same size as a full-size keyboard, but omits the number pad.
• 75%  – condenses the function keys
• 65% – usually retains the arrow keys while condensing the other function keys.
• 60% – removes the function and navigation keys
• 40% – the smallest keyboard

But even within those, there are not necessarily consistencies. I have several 75% keyboards I’ve tried, and some have 3 function buttons, 5 function buttons 7 function buttons…So, there is no clear definition matching above.

So, let’s talk about the why for a moment? Maybe it is because you want to carry it around, but maybe you want a keyboard for your desk that is smaller. Maybe you have a laptop and you want to use a keyboard with that, as there are few options in laptop keyboards by comparison.

What tradeoffs will you make to get that smaller size? Do you need a numpad? If so…there is an alternative to the traditional full size..the 1800 layout(96%), which cuts function keys but retains the number pad? Are you left handed? Maybe you still want the number pad, but you want a southpaw keyboard, which moves it to the left side? Or get that separate number pad I mentioned.

A good example of the hotswappable 1800 keyboard with VIA programmable support is the Epomaker EK98. There was also the Q5, that Woot recently had on sale.

Let’s get below the TKL, because the form factor there is what you want if you want the full size keyboard but don’t need the number pad. But that still leaves the 6 function keys and the arrows taking up space. What if you dumped those? Do you actually use the arrow and navigation keys(Home/End,Page Down/Page Up)? I talked previously about what keys on a keyboard you might be able to dump.

Once you get down to this size, you also start to have to think about keyboard layers…what combination of keys you want to trigger the keys you jettisoned if you need them. And if you want to invest in a QMK/VIA programmable keyboard to do that over having to install drivers on a computer.

Below TKL, the actual layout seems to be fluid. It may say 75%, or 65%…but…they all look very different. At the 75% level, if you want budget, look at the Hexgear I2 75% hotswappable keyboard. This isn’t programmable, but it has an aluminum frame and PBT keycaps for only $20. It also has all six navigation keys as well as arrow keys. By comparison, what is Keychron doing with their VIA/QMK V2 75%? A home but no end key? Are there studies showing people want to jump to the top over the bottom? Of course, being VIA/QMK…you can change out the function keys to be whatever you want. Epomaker has a sale on their wireless TH80 at $45 right now. You get a knob…then Delete, Home, and Page Up/Page Down.

65% cuts out the function keys..which is fine, I don’t use those much anyway(although I could program them to something else. As mentioned, 65% for me is the best combination for travel. Not too small, not too big. Royal Kludge has a sale on the RK68 hot swap 65% right now, but it isn’t my favorite budget 65% right now. If you can give up programmability, the Shurikey Gear 65 is a great budget hotswap 65%. I also still have my K6 with its aluminum frame. Aluminum is great for home, but not necessarily for traveling due its weight. The Shurikey at $20-25 seems to be a good keyboard you can forget somewhere…and after I left a portable monitor at a hotel in Europe and had to figure out how to get it back…

At 60%, the Skyloong GK61 is my budget pick…QMK/VIA programmable, offers PBT keycaps, wireless capability…

I’ve even warmed to the 40% layout, compiling QMK firmware for an Inland MK47, the cheapest 40% I could find and swapping keycaps and switches…I took this one on a trip and you can get used to it pretty quickly. I do miss number keys at times though.

I continue to limit my searches to Amazon of late…but there are some good deals to be had. There are always better keyboards…do you want aluminum? Gasket mount? Filled with foam? There are all sorts of options to improve the experience of typing, but with a little customization, many budget keyboards can be perfect for needs. You can even, like me, have different keyboards for different use cases…travel, the office, home, to leave at a relative’s house…

• Caps Lock – Chromebooks already got rid of the Caps Lock key. On my 40% keyboard, I set Caps Lock using a Tap-Hold function on the Shift key. When you tap the shift key, it triggers Caps Lock, otherwise, holding it is a shift. Double-tap is a common caps lock command on Smartphone keyboards. Also, the key is 1.75u…so even if you keep it, it takes up more space than a traditional key. On a Colemak layout, the Caps Lock position serves as a second backspace key to allow it to be reached by both hands.
• Scroll Lock – This used to be used to change the behavior of the arrow keys, but it is not usually used for that outside of some programs any longer, making it less useful. On one keyboard I have, this was replaced by a microphone mute key.
• Pause/Break – We’re back to….this doesn’t seem to do much on modern computers. On one keyboard I have, this was replaced by a control key for the lighting.
• Num Lock – Num lock locks the keypad to numbers. Without it, the keypad can act as arrows, as well as having functions for home, end, insert, delete, page up and page down. Things pretty much every keyboard with a built in number pad already has.
• Menu Key – Also known as the Application key, it has been used to launch a context menu with the keyboard, as opposed to a right mouse click. Microsoft recently decided to start replacing this with a Copilot or Search button.
• Function Keys – Most keyboards has F1-F12. Macs remap these to media keys, which are often a secondary function on Windows systems. But computers actually support up to 24 function keys…thus my weird F13. These can be mapped in software to trigger operating system functions and are often used by default by software.. But, you can also just lock them to the media functions if you want to.

This doesn’t factor in the ANSI layout popular in the US with the alternate ISO layout popular in Europe. On the ISO keyboard, the Enter key is a larger L shaped key, the left shift is smaller to make space for another key, the right Alt is often replaced by a key to support additional languages, and the extra long backslash key is gone.

On many keyboard formats, some of these keys are omitted and generated using combinations of other keys. So, is this just a pointless exercise? I don’t think so. So many new keyboards still have all these keys, and they are sitting there, and you might as well use them for something, if not their original intention.