What ⇳ means
Read it as a cue to scroll through a page or list. Its two arrowheads leave the destination open; surrounding text supplies any more exact instruction.
Why is ⇳ associated with scrolling?
Its standards history groups it with keyboard symbols. A 1999 draft amendment to ISO/IEC 10646, the international standard that shares its character set with Unicode, lists ⇳ among new arrows under the heading “Keyboard symbols.”
Don't confuse it with
4Questions people ask
1Why does ⇳ show as a box on some devices?
Because that device's fonts have no glyph for it. The character is still correct and still copies correctly — the box is a missing glyph, not a broken character.
How to type ⇳
Windows (Word)
Alt+XType 21F3, then Alt+X to get ⇳.
Windows
Win+Rrun charmap for the full table, or use the emoji picker's Ω symbols tab (Win + .).
macOS
Control+Command+SpaceOpen the character viewer and search “up down white arrow”.
Linux
Ctrl+Shift+UType 21f3, then Enter or Space.
HTML
⇳CSS
\21F3Codes and encoding1 code points
HTML decimal
⇳
HTML hex
⇳
CSS content
content: "\21F3";
Each escape is closed by the next backslash; a trailing space is needed before a literal hex digit.
URL encoded
%E2%87%B3
1
On screen
1
Code points
1
JS .length
3
UTF-8 bytes
A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.