diff --git a/main/postmarketos-zram/APKBUILD b/main/postmarketos-zram/APKBUILD
new file mode 100644
index 000000000..01bf442a2
--- /dev/null
+++ b/main/postmarketos-zram/APKBUILD
@@ -0,0 +1,32 @@
+maintainer="Clayton Craft <clayton@craftyguy.net>"
+pkgname=postmarketos-zram
+pkgver=1
+pkgrel=0
+pkgdesc="zram swap configuration for postmarketOS"
+url="https://postmarketos.org"
+arch="noarch"
+license="GPL-3.0-or-later"
+depends="util-linux-misc"
+subpackages="$pkgname-openrc $pkgname-systemd"
+replaces="postmarketos-base"
+options="!check"
+source="
+	postmarketos-zram-swap.initd
+	postmarketos-zram-swap.service
+	zramstart
+	zramstop
+"
+
+package() {
+	install -Dm755 zramstart -t "$pkgdir"/usr/bin
+	install -Dm755 zramstop -t "$pkgdir"/usr/bin
+	install -Dm755 postmarketos-zram-swap.initd "$pkgdir"/etc/init.d/postmarketos-zram-swap
+	install -Dm644 postmarketos-zram-swap.service -t "$pkgdir"/usr/lib/systemd/system
+}
+
+sha512sums="
+ca91be78a47c00f40f3e645f79a72b2cd7ba3f080e2feb256998bb121f64c0394041f2ed822ad307ac36e86398b8175b3284dc5097a7017947e520a304b0a37d  postmarketos-zram-swap.initd
+5c1787bc2d597726113aaf3ea59229b5a56b8fc3446c78406a202e163a0b37ac564a87b2acc1c1f1a7dcdc18ff863c45e13aa687b93fa537c5ef000b9e8d6d19  postmarketos-zram-swap.service
+798e162f0393621144bfef843fa2f21f9cdfaaa4cd07d4d8b63499f8c3db27d6b9cbb901b43459e5378bd2bb6905f1e371ff915b8e439908944e8030eee7b48e  zramstart
+a70d2bcb26c1af42a71811a1c1cd2984808f5ce09d7af52b26824cf5c15c8a9c819691fc6290cf3028226fca39f6e7a495546c5573c582a14d5a8c7c65dbfe3e  zramstop
+"
diff --git a/main/postmarketos-zram/postmarketos-zram-swap.initd b/main/postmarketos-zram/postmarketos-zram-swap.initd
new file mode 100644
index 000000000..c664bbc23
--- /dev/null
+++ b/main/postmarketos-zram/postmarketos-zram-swap.initd
@@ -0,0 +1,25 @@
+#!/sbin/openrc-run
+# SPDX-License-Identifier: GPL-2.0-only
+
+depend() {
+	need localmount
+	after bootmisc modules
+	provide swap
+}
+
+start() {
+	ebegin "Starting zram swap"
+	if [ ! -f /usr/share/misc/source_deviceinfo ]; then
+		eend 1 "deviceinfo not found"
+		return 1
+	fi
+
+	zramstart
+	eend $?
+}
+
+stop() {
+	ebegin "Stopping zram swap"
+	zramstop
+	eend $?
+}
diff --git a/main/postmarketos-zram/postmarketos-zram-swap.service b/main/postmarketos-zram/postmarketos-zram-swap.service
new file mode 100644
index 000000000..cd8e79c54
--- /dev/null
+++ b/main/postmarketos-zram/postmarketos-zram-swap.service
@@ -0,0 +1,15 @@
+[Unit]
+Description=Enable compressed swap in memory using zram
+DefaultDependencies=no
+Before=swap.target
+
+[Service]
+Type=oneshot
+RemainAfterExit=yes
+TimeoutStartSec=30sec
+ExecCondition=sh -c '. /usr/share/misc/source_deviceinfo'
+ExecStart=/usr/bin/zramstart
+ExecStop=/usr/bin/zramstop
+
+[Install]
+WantedBy=swap.target
diff --git a/main/postmarketos-zram/zramstart b/main/postmarketos-zram/zramstart
new file mode 100644
index 000000000..55d5be6f1
--- /dev/null
+++ b/main/postmarketos-zram/zramstart
@@ -0,0 +1,71 @@
+#!/bin/sh
+# shellcheck disable=SC3043
+
+set -e
+
+# shellcheck disable=SC1091
+. /usr/share/misc/source_deviceinfo
+
+get_size() {
+        # Size defaults to:
+        # - 75% of RAM for devices with 2GB of RAM or less
+        # - 50% of RAM for devices with between 2GB and 6GB of RAM
+        # - 25% of RAM for devices with greater 6GB of RAM
+        # This is loosely based on some data here:
+        # https://gitlab.postmarketos.org/postmarketOS/pmaports/-/merge_requests/3752#note_1229631449
+
+        local mem_size_mb size_pct
+        mem_size_mb="$(LC_ALL=C free -m | awk '/^Mem:/{print $2}')"
+
+        if [ "$mem_size_mb" -le 2048 ]; then
+                size_pct=75
+        elif [ "$mem_size_mb" -gt 6144 ]; then
+                size_pct=25
+        else
+                size_pct=50
+        fi
+
+        # Allow overriding the size as a percentage of RAM using a deviceinfo var, or
+        # disabling it completely
+        if [ -n "$deviceinfo_zram_swap_pct" ]; then
+                # 0% --> disable zram swap
+                if [ "$deviceinfo_zram_swap_pct" = "0" ]; then
+                        echo 0
+                        return
+                fi
+
+                size_pct="$deviceinfo_zram_swap_pct"
+        fi
+
+        echo $((mem_size_mb * size_pct / 100))
+}
+
+get_algo() {
+        # Default to zstd compression, and allow overriding via deviceinfo
+        # TODO: Architecture-specific defaults?
+        # TODO: Ensure deviceinfo uses valid and usable algorithm for running
+        # kernel
+        echo "${deviceinfo_zram_swap_algo:-zstd}"
+}
+
+size=$(get_size)
+algo=$(get_algo)
+
+[ "$size" -eq 0 ] && exit 0
+
+if swapon --show=NAME --noheadings | grep -q '^/dev/zram'; then
+	echo "ZRAM swap already active, skipping setup"
+	exit 0
+fi
+
+modprobe -q zram num_devices=1
+dev="$(zramctl -f -a "$algo" -s "${size}"M)"
+mkswap "$dev" >/dev/null
+swapon "$dev" >/dev/null
+
+# ZRAM-optimized sysctl settings
+sysctl -w \
+    vm.page-cluster=0 \
+    vm.swappiness=180 >/dev/null
+
+echo "ZRAM swap device $dev activated using $algo and size $size MB"
diff --git a/main/postmarketos-zram/zramstop b/main/postmarketos-zram/zramstop
new file mode 100644
index 000000000..d45e1b644
--- /dev/null
+++ b/main/postmarketos-zram/zramstop
@@ -0,0 +1,6 @@
+#!/bin/sh
+
+for i in $(grep '^/dev/zram' /proc/swaps | awk '{ print $1 }'); do
+        swapoff "$i" && zramctl --reset "$i"
+        echo "Stopped ZRAM swap device $i"
+done