Low Profile Keycaps: The Complete Guide
Low profile keycaps sit closer to the desk, reduce finger travel, and change how a keyboard looks and sounds. This guide covers everything you need to know to find the right ones for your board: profiles, compatibility, and what's actually available.
This guide covers low profile keycaps for MX-stem switches, the kind found on most mechanical keyboards. If you're on a board with Kailh Choc switches (common on split ergonomic keyboards), the options and compatibility rules are different. We'll cover Choc keycaps separately. Laptop and ultra-low-profile switches are also out of scope here.
Is my keyboard low profile?
"Low profile" gets used in two different ways in the keyboard world, and the distinction matters before you buy anything.
Low profile case vs. low profile switches
A keyboard can look low profile because of its case design, with slim bezels and minimal height above the desk, while still using full-height switches underneath. If that's your board, standard keycap sets fit just fine.
What actually determines keycap compatibility is the switch, not the case. Low profile MX switches have a shorter total travel distance and a reduced stem height, which means not all keycaps are compatible. More on that in the next section.
That said, you don't need a low profile switch to use low profile keycaps. Some people prefer the look and feel of a flatter keycap set on a standard board. There are no compatibility concerns there, it's purely an aesthetic choice.
Image: side view comparison of a keyboard with standard MX switches and one with low profile MX switches, showing the height difference above the plate. Filename: standard-vs-low-profile-mx-switches-height-comparison.jpg. Alt text: Side view comparison of standard and low profile MX switches showing keycap height above the plate.
Identifying your switch type
Pop a keycap off and look at the switch stem, the small plastic piece that moves up and down when you press a key.
MX-style stem (cross-shaped, +) – this is what most mechanical keyboards use, and what this guide covers. Both standard and low profile MX switches use this stem shape. Kailh Choc V2 switches also use an MX-compatible cross stem in a low profile housing, so they fall into this category too.
Image: close-up of an MX cross stem against a neutral background. Filename: mx-cross-stem-close-up.jpg. Alt text: Close-up of a Cherry MX-style cross-shaped switch stem.
Everything else falls outside the scope of this guide. The most common cases are:
- Kailh Choc V1 — two small rectangular prongs side by side instead of a cross. Common on split ergonomic keyboards. Requires dedicated Choc keycaps.
- Laptop scissor switches and ultra-low-profile switches — completely proprietary mounting systems. No aftermarket MX keycaps will fit.
Image: side-by-side comparison of an MX cross stem, a Choc V1 stem, and a laptop scissor switch mechanism. Filename: mx-choc-laptop-switch-stem-comparison.jpg. Alt text: Side-by-side comparison of an MX cross stem, Kailh Choc V1 stem, and laptop scissor switch showing the differences in stem shape.
If you cannot remove a keycap easily, check your keyboard's product page or spec sheet. The switch model is almost always listed. Any switch with "MX" in the name uses the cross stem. Kailh Choc V1 switches will be listed as "Choc V1" or simply "Choc."
💡 Tip: Not sure if your low profile switch is Choc V1 or Choc V2? Choc V2 switches will explicitly say "V2" in the name. If it just says "Choc" with no version number, assume V1.
The collision problem
Low profile MX switches are shorter than standard ones. That sounds straightforward, but it creates a specific problem when you pair them with keycaps that were not designed with that reduced height in mind.
When you fully press a key on a low profile switch, the keycap travels further down toward the plate than it would on a standard switch. If the keycap's inner geometry (its walls, stem channel, and overall depth) is too large for that reduced travel distance, the underside of the keycap will hit either the switch housing or the keyboard plate before the switch reaches its natural bottom-out point.
The result is one of two things: a hard stop that prevents you from fully pressing the key, or a knock or clatter at the bottom of each keystroke that makes typing noticeably less pleasant. Neither is acceptable on a well-built keyboard.
Image: diagram showing a standard keycap on a low profile switch with the collision point highlighted at the bottom of travel. Filename: keycap-collision-low-profile-switch-diagram.jpg. Alt text: Diagram showing the underside of a standard keycap colliding with a low profile switch housing at the bottom of the keystroke.
Which profiles cause this problem
Most keycap profiles were designed for standard MX switches and do not account for the shorter housing of low profile variants. On a low profile switch, the following profiles will cause collision:
- Cherry — the most widely used enthusiast profile, but its inner geometry is too deep for low profile switches
- SA — tall and heavily sculpted, incompatible with low profile switches
- KAM — uniform and comfortable on standard switches, but not designed for low profile use
- PBS — a well-regarded uniform profile, also not suitable for low profile switches
To be clear, this is only a concern if you are using low profile switches. These profiles work perfectly well on standard MX switches, which are found on the vast majority of mechanical keyboards.
Profiles designed for low profile switches
Some profiles are purpose-built to avoid this problem entirely. Their inner geometry is engineered specifically around the shorter housing of low profile MX switches, so the keycap clears both the switch housing and the plate through the full range of travel.
PFF is the profile Yuzu offers for low profile MX switches. Designed by matt3o and manufactured by Keyreative, it was built from the ground up for low profile use rather than adapted from an existing design. At 5mm tall, it sits noticeably closer to the plate than any standard profile while still offering a shaped, comfortable typing surface.
PFF is not the only profile built this way, but it is the one available on Yuzu.
Low profile keycaps on Yuzu
Yuzu offers one profile designed for low profile MX switches: PFF (Penguin Flat Feet). Designed by matt3o and manufactured by Keyreative, it was built from the ground up for low profile switches rather than adapted from an existing profile. At 5mm tall, it brings the same wide, ergonomic typing surface as PBS to a keycap that clears the housing and plate of low profile switches through the full range of travel. Learn more about PFF.
Compatible switches
PFF covers the large majority of low profile MX switches currently on the market:
- Cherry Low Profile
- Kailh Choc V2 (and other Kailh MX-stem low profile switches)
- Gateron Low Profile
- Huano Low Profile (used in many Keychron low profile keyboards)
Image: all supported PFF key sizes laid out in a grid. Filename: pff-supported-key-sizes.jpg. Alt text: All key sizes supported by the PFF profile including concave and convex variants.
PBS is also a short profile by matt3o, and the two share a similar top surface design. However, PBS is designed for standard MX switches and will cause collision issues on low profile switches. If you are on a low profile board, PFF is the right choice.
Profile comparison
All four profiles Yuzu offers work on standard MX switches. Only PFF is designed for low profile MX switches.
| Profile | Height | Sculpted | Low profile switches | Standard switches |
|---|---|---|---|---|
| Cherry | 9.4mm | ✅ | ❌ | ✅ |
| KAM | 9.05mm | ❌ | ❌ | ✅ |
| PBS | 7.5mm | ❌ | ❌ | ✅ |
| PFF | 5mm | ❌ | ✅ | ✅ |
Cherry
The most widely used enthusiast profile. Sculpted rows give each key a distinct angle and height, which helps with touch typing on standard boards. At 9.4mm it sits comfortably above a standard switch with no compatibility concerns. Not suitable for low profile switches.
KAM
A uniform profile at 9.05mm, meaning every row is the same shape. Keys can be placed in any position freely, which makes it a good fit for alternative layouts. Slightly shorter than Cherry but still well above the threshold that causes collision on low profile switches.
PBS
The shortest profile Yuzu offers for standard switches, at 7.5mm. Also uniform, with a wide cylindrical top surface and deep spherical scoop designed by matt3o. PBS sits noticeably closer to the desk than Cherry or KAM, but its inner geometry is still sized for standard MX switches. It will cause collision on low profile switches despite its reduced height.
PFF
The only profile on Yuzu designed specifically for low profile MX switches, at 5mm. Uniform like PBS, with a very similar top surface. Compatible with Cherry Low Profile, Kailh Choc V2, Gateron Low Profile, and Huano Low Profile switches. Also works on standard MX switches for anyone who prefers a flatter feel on a standard board.
Image: side view of all four profiles at the same scale showing relative heights. Filename: cherry-kam-pbs-pff-profile-height-comparison.jpg. Alt text: Side view comparison of Cherry, KAM, PBS and PFF keycap profiles showing relative heights.