diff --git a/.changeset/real-taxis-vanish.md b/.changeset/real-taxis-vanish.md
new file mode 100644
index 000000000..98e7155c4
--- /dev/null
+++ b/.changeset/real-taxis-vanish.md
@@ -0,0 +1,5 @@
+---
+'@openproject/octicons': minor
+---
+
+Add 24px versions for multiple icons
diff --git a/icons/op-add-attachment-24.svg b/icons/op-add-attachment-24.svg
new file mode 100644
index 000000000..21cbb83f8
--- /dev/null
+++ b/icons/op-add-attachment-24.svg
@@ -0,0 +1,4 @@
+<svg width="24" height="24" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg">
+<path d="M16.5417 3.44792C17.2252 3.44792 17.8806 3.7211 18.3639 4.20735C18.6033 4.44815 18.7933 4.73311 18.9229 5.04779C19.0524 5.36247 19.1191 5.69975 19.1191 6.04037C19.1191 6.38099 19.0524 6.71827 18.9229 7.03295C18.7933 7.34762 18.6033 7.63353 18.3639 7.87433L9.74997 16.5415C9.54568 16.748 9.27392 16.8621 9.00216 16.8621C8.73508 16.8621 8.47175 16.7518 8.26559 16.5491C8.26491 16.5477 8.26349 16.5456 8.2615 16.5427C8.25802 16.5375 8.25281 16.5297 8.24684 16.5189C8.15969 16.3473 8.11284 16.1578 8.11002 15.9654C8.11213 15.6812 8.22522 15.4093 8.4249 15.2083L16.0446 7.54054C16.1368 7.45403 16.2043 7.3441 16.2397 7.22232C16.2752 7.10053 16.2773 6.97137 16.246 6.84844C16.2151 6.72529 16.1517 6.61281 16.0625 6.52287C15.9734 6.43293 15.8618 6.36885 15.7394 6.33738C15.6171 6.30592 15.4886 6.30823 15.3675 6.34407C15.2464 6.37991 15.1371 6.44796 15.0512 6.54105L7.43062 14.2078C6.9705 14.6708 6.70436 15.3054 6.70436 15.9654C6.70578 16.2696 6.75902 16.5713 6.86179 16.8574C6.94801 17.0988 7.08108 17.3572 7.26475 17.542C7.49218 17.7733 7.76269 17.9572 8.0608 18.0832C8.35892 18.2092 8.6788 18.2749 9.00216 18.2765C9.65622 18.2729 10.2822 18.0088 10.7433 17.542L19.3582 8.87381C19.8622 8.37867 20.2265 7.75782 20.4141 7.07465C20.6016 6.39148 20.6055 5.67047 20.4256 4.98525C20.2461 4.29996 19.8892 3.67485 19.3912 3.17374C18.8931 2.67263 18.2719 2.31348 17.5908 2.13295C16.9098 1.95184 16.1932 1.95583 15.5142 2.14452C14.8353 2.3332 14.2182 2.69982 13.7261 3.20693L4.6146 12.3748C3.57433 13.4387 2.99401 14.8731 3.00005 16.3656C3.00609 17.858 3.598 19.2876 4.64684 20.343C5.69569 21.3983 7.1165 21.9939 8.59978 22C10.0831 22.006 11.5086 21.4221 12.566 20.3754L14.1235 18.8074C14.2514 18.6739 14.3222 18.4953 14.3205 18.3098C14.3188 18.1244 14.2448 17.9471 14.1145 17.816C13.9841 17.685 13.8078 17.6107 13.6235 17.6091C13.4392 17.6076 13.2617 17.679 13.1292 17.8079L11.5717 19.375C10.7809 20.1707 9.70825 20.6178 8.58983 20.6178C7.4714 20.6178 6.39878 20.1707 5.60794 19.375C4.81709 18.5793 4.3728 17.5 4.3728 16.3747C4.3728 15.2493 4.81709 14.1701 5.60794 13.3743L14.7195 4.20735C15.2028 3.7211 15.8582 3.44792 16.5417 3.44792Z" fill="#636C76"/>
+<path d="M18.2 13.7C18.2 13.3134 17.8866 13 17.5 13C17.1134 13 16.8 13.3134 16.8 13.7V15.8H14.7C14.3134 15.8 14 16.1134 14 16.5C14 16.8866 14.3134 17.2 14.7 17.2H16.8V19.3C16.8 19.6866 17.1134 20 17.5 20C17.8866 20 18.2 19.6866 18.2 19.3V17.2H20.3C20.6866 17.2 21 16.8866 21 16.5C21 16.1134 20.6866 15.8 20.3 15.8H18.2V13.7Z" fill="#636C76"/>
+</svg>
diff --git a/icons/op-backlogs-24.svg b/icons/op-backlogs-24.svg
index 405fcc856..b9de0bce5 100644
--- a/icons/op-backlogs-24.svg
+++ b/icons/op-backlogs-24.svg
@@ -1 +1,6 @@
-<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24"><path d="M14.72 4.993a.749.749 0 0 0 0 1.06l2.773 2.773a.749.749 0 1 0 1.06-1.06l-1.492-1.493H20.5v12.5h-3.75a.75.75 0 0 0 0 1.5h4.5a.75.75 0 0 0 .75-.75v-14a.75.75 0 0 0-.75-.75h-4.189l1.492-1.493a.749.749 0 1 0-1.06-1.06L14.72 4.993ZM10.667 3C11.955 3 13 3.956 13 5.287v.688c0 1.331-1.045 2.024-2.333 2.024H4.333C3.045 7.999 2 7.306 2 5.975v-.688C2 3.956 3.045 3 4.333 3Zm.833 1.943a.339.339 0 0 0-.333-.345H3.833a.339.339 0 0 0-.333.345v1.213c0 .19.149.344.333.344h7.334a.339.339 0 0 0 .333-.344Z"/><path d="M13.667 10c1.288 0 2.333.956 2.333 2.287v.688c0 1.331-1.045 2.024-2.333 2.024H7.333C6.045 14.999 5 14.306 5 12.975v-.688C5 10.956 6.045 10 7.333 10Zm.833 1.943a.339.339 0 0 0-.333-.345H6.833a.339.339 0 0 0-.333.345v1.213c0 .19.149.344.333.344h7.334a.339.339 0 0 0 .333-.344Zm0 7.344v.688c0 1.331-1.045 2.024-2.333 2.024H5.833c-1.288 0-2.333-.693-2.333-2.024v-.688C3.5 17.956 4.545 17 5.833 17h6.334c1.288 0 2.333.956 2.333 2.287Zm-1.833-.689H5.333a.34.34 0 0 0-.333.345v1.213c0 .19.149.344.333.344h7.334a.339.339 0 0 0 .333-.344v-1.213a.34.34 0 0 0-.333-.345Z"/></svg>
\ No newline at end of file
+<svg width="24" height="24" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg">
+<path d="M14.7197 4.99264C14.4268 5.28553 14.4268 5.76041 14.7197 6.0533L17.4926 8.82627C17.7855 9.11917 18.2604 9.11917 18.5533 8.82627C18.8462 8.53338 18.8462 8.05851 18.5533 7.76561L17.0607 6.27297H20.5V18.773H16.75C16.3358 18.773 16 19.1088 16 19.523C16 19.9372 16.3358 20.273 16.75 20.273H21.25C21.6642 20.273 22 19.9372 22 19.523V5.52297C22 5.10876 21.6642 4.77297 21.25 4.77297H17.0607L18.5533 3.28033C18.8462 2.98744 18.8462 2.51256 18.5533 2.21967C18.2604 1.92678 17.7855 1.92678 17.4926 2.21967L14.7197 4.99264Z" fill="#636C76"/>
+<path fill-rule="evenodd" clip-rule="evenodd" d="M10.6667 3C11.9553 3 13 3.95597 13 5.28688V5.97541C13 7.30633 11.9553 7.99926 10.6667 7.99926H4.33333C3.04467 7.99926 2 7.30632 2 5.97541V5.28688C2 3.95597 3.04467 3 4.33333 3H10.6667ZM11.5 4.94262C11.5 4.75249 11.3508 4.59836 11.1667 4.59836H3.83333C3.64924 4.59836 3.5 4.75249 3.5 4.94262V6.15574C3.5 6.34587 3.64924 6.5 3.83333 6.5H11.1667C11.3508 6.5 11.5 6.34587 11.5 6.15574V4.94262Z" fill="#636C76"/>
+<path fill-rule="evenodd" clip-rule="evenodd" d="M13.6667 10C14.9553 10 16 10.956 16 12.2869V12.9754C16 14.3063 14.9553 14.9993 13.6667 14.9993H7.33333C6.04467 14.9993 5 14.3063 5 12.9754V12.2869C5 10.956 6.04467 10 7.33333 10H13.6667ZM14.5 11.9426C14.5 11.7525 14.3508 11.5984 14.1667 11.5984H6.83333C6.64924 11.5984 6.5 11.7525 6.5 11.9426V13.1557C6.5 13.3459 6.64924 13.5 6.83333 13.5H14.1667C14.3508 13.5 14.5 13.3459 14.5 13.1557V11.9426Z" fill="#636C76"/>
+<path fill-rule="evenodd" clip-rule="evenodd" d="M14.5 19.2869C14.5 17.956 13.4553 17 12.1667 17H5.83333C4.54467 17 3.5 17.956 3.5 19.2869V19.9754C3.5 21.3063 4.54467 21.9993 5.83333 21.9993H12.1667C13.4553 21.9993 14.5 21.3063 14.5 19.9754V19.2869ZM12.6667 18.5984C12.8508 18.5984 13 18.7525 13 18.9426V20.1557C13 20.3459 12.8508 20.5 12.6667 20.5H5.33333C5.14924 20.5 5 20.3459 5 20.1557V18.9426C5 18.7525 5.14924 18.5984 5.33333 18.5984H12.6667Z" fill="#636C76"/>
+</svg>
diff --git a/icons/op-indent-24.svg b/icons/op-indent-24.svg
new file mode 100644
index 000000000..340b8a249
--- /dev/null
+++ b/icons/op-indent-24.svg
@@ -0,0 +1,7 @@
+<svg width="24" height="24" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg">
+<path d="M3 6C3 5.58579 3.33579 5.25 3.75 5.25H20.25C20.6642 5.25 21 5.58579 21 6C21 6.41421 20.6642 6.75 20.25 6.75H3.75C3.33579 6.75 3 6.41421 3 6Z" fill="#636C76"/>
+<path d="M8 10C8 9.5858 8.33579 9.25 8.75 9.25H20.25C20.6642 9.25 21 9.5858 21 10C21 10.4142 20.6642 10.75 20.25 10.75H8.75C8.33579 10.75 8 10.4142 8 10Z" fill="#636C76"/>
+<path d="M3 18C3 17.5858 3.33579 17.25 3.75 17.25H20.25C20.6642 17.25 21 17.5858 21 18C21 18.4142 20.6642 18.75 20.25 18.75H3.75C3.33579 18.75 3 18.4142 3 18Z" fill="#636C76"/>
+<path d="M8.75 13.25C8.33579 13.25 8 13.5858 8 14C8 14.4142 8.33579 14.75 8.75 14.75H20.25C20.6642 14.75 21 14.4142 21 14C21 13.5858 20.6642 13.25 20.25 13.25H8.75Z" fill="#636C76"/>
+<path d="M5.92673 12.1768L4.53029 13.5732C4.3728 13.7307 4.10351 13.6192 4.10351 13.3965V10.6035C4.10351 10.3808 4.37279 10.2693 4.53029 10.4268L5.92673 11.8232C6.02436 11.9208 6.02436 12.0791 5.92673 12.1768Z" fill="#636C76"/>
+</svg>
diff --git a/icons/op-outdent-24.svg b/icons/op-outdent-24.svg
new file mode 100644
index 000000000..c473f19dd
--- /dev/null
+++ b/icons/op-outdent-24.svg
@@ -0,0 +1,7 @@
+<svg width="24" height="24" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg">
+<path d="M3 6C3 5.58579 3.33579 5.25 3.75 5.25H20.25C20.6642 5.25 21 5.58579 21 6C21 6.41421 20.6642 6.75 20.25 6.75H3.75C3.33579 6.75 3 6.41421 3 6Z" fill="#636C76"/>
+<path d="M8 10C8 9.5858 8.33579 9.25 8.75 9.25H20.25C20.6642 9.25 21 9.5858 21 10C21 10.4142 20.6642 10.75 20.25 10.75H8.75C8.33579 10.75 8 10.4142 8 10Z" fill="#636C76"/>
+<path d="M3 18C3 17.5858 3.33579 17.25 3.75 17.25H20.25C20.6642 17.25 21 17.5858 21 18C21 18.4142 20.6642 18.75 20.25 18.75H3.75C3.33579 18.75 3 18.4142 3 18Z" fill="#636C76"/>
+<path d="M8.75 13.25C8.33579 13.25 8 13.5858 8 14C8 14.4142 8.33579 14.75 8.75 14.75H20.25C20.6642 14.75 21 14.4142 21 14C21 13.5858 20.6642 13.25 20.25 13.25H8.75Z" fill="#636C76"/>
+<path d="M4.17674 11.8233L5.57318 10.4268C5.73067 10.2693 5.99996 10.3809 5.99996 10.6036V13.3965C5.99996 13.6192 5.73068 13.7307 5.57318 13.5732L4.17674 12.1768C4.07911 12.0792 4.07911 11.9209 4.17674 11.8233Z" fill="#636C76"/>
+</svg>
diff --git a/icons/op-read-all-24.svg b/icons/op-read-all-24.svg
new file mode 100644
index 000000000..6f723c2ee
--- /dev/null
+++ b/icons/op-read-all-24.svg
@@ -0,0 +1,4 @@
+<svg width="24" height="24" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg">
+<path fill-rule="evenodd" clip-rule="evenodd" d="M11 3C10.7082 3 10.4214 3.08199 10.1675 3.23797L2.855 7.73208C2.32625 8.05745 2 8.66588 2 9.32474V17.0522C2 17.5376 2.17779 18.0031 2.49426 18.3463C2.81072 18.6895 3.23995 18.8823 3.6875 18.8823H18.3125C18.76 18.8823 19.1893 18.6895 19.5057 18.3463C19.8222 18.0031 20 17.5376 20 17.0522V9.32393C20 9.0003 19.9208 8.68247 19.7706 8.40283C19.6204 8.12318 19.4045 7.89174 19.145 7.73208L11.8325 3.23797C11.5786 3.08199 11.2918 3 11 3ZM11 4.22007C11.0973 4.22007 11.1929 4.24743 11.2775 4.29948L18.2652 8.59348L12.7077 12.0375C12.2174 11.6312 11.6174 11.4111 11.0004 11.4111C10.3833 11.4111 9.78335 11.6312 9.29299 12.0375L3.7355 8.5943L10.7225 4.29948C10.8071 4.24743 10.9027 4.22007 11 4.22007ZM12.0425 13.0225L17.4875 17.6622H4.5125L9.95749 13.0225C10.2548 12.7692 10.6219 12.6315 11 12.6315C11.3781 12.6315 11.7452 12.7692 12.0425 13.0225ZM13.6625 12.8509L18.875 9.62083V17.0522C18.8751 17.1455 18.8553 17.2377 18.8172 17.3214C18.7805 17.2393 18.7265 17.1669 18.6597 17.1099L13.6625 12.8509ZM3.125 9.62083L8.33749 12.8509L3.3395 17.1099C3.27298 17.1663 3.21913 17.2384 3.182 17.3206C3.146 17.2393 3.125 17.149 3.125 17.0522V9.62083Z" fill="#636C76"/>
+<path d="M21.145 9.84973C21.4046 10.0094 21.6204 10.2408 21.7706 10.5205C21.9208 10.8001 22 11.118 22 11.4416V19.1698C22 19.6552 21.8222 20.1207 21.5057 20.464C21.1893 20.8072 20.7601 21 20.3125 21H5.68752C5.23997 21 4.81075 20.8072 4.49428 20.464C4.17781 20.1207 4.00002 19.7799 4.00002 19.4382H5.18202C5.24635 19.5521 5.43752 19.7799 5.68752 19.7799H20.3125C20.5625 19.7799 20.7532 19.5527 20.8173 19.4391C20.8554 19.3553 20.8751 19.2632 20.875 19.1698V11.7385L20.8173 9.84973H21.145Z" fill="#636C76"/>
+</svg>
diff --git a/icons/op-relation-new-child-24.svg b/icons/op-relation-new-child-24.svg
new file mode 100644
index 000000000..abd74021e
--- /dev/null
+++ b/icons/op-relation-new-child-24.svg
@@ -0,0 +1,4 @@
+<svg width="24" height="24" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg">
+<path d="M4.91585 11.7321C4.6555 11.4626 4.23339 11.4626 3.97304 11.7321C3.7127 12.0016 3.7127 12.4384 3.97304 12.708L4.83497 13.6002H3.55556C3.43283 13.6002 3.33333 13.4972 3.33333 13.3702L3.33333 2.66819C3.33333 2.29916 3.03486 2 2.66667 2C2.29848 2 2 2.29916 2 2.66819V13.3702C2 14.2595 2.69645 14.9804 3.55556 14.9804L4.83497 14.9804L3.97304 15.8726C3.7127 16.1421 3.71269 16.5791 3.97304 16.8486C4.23339 17.1181 4.6555 17.1181 4.91585 16.8486L6.91585 14.7783C7.1762 14.5088 7.1762 14.0718 6.91585 13.8023L4.91585 11.7321Z" fill="#636C76"/>
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+</svg>