Copy Formats & Codes
Description & Usage
The Black Square Symbol is ■. Its Unicode code point is U+25A0, HTML entity is ■, CSS escape is \\25A0, and JavaScript escape is \u25A0.
Black square (■) is a spacing or invisible Unicode character for layout tests, blank-looking text, and form behavior checks within square symbol in the filled group.
Practical use
Use Black square deliberately for spacing, no-break behavior, zero-width testing, or blank-looking text; record the Unicode value before pasting.
Compatibility
Black square may be invisible, collapsed, trimmed, or blocked by forms, usernames, search boxes, and text sanitizers.
Use with care
Black square can make text hard to audit, moderate, or recover; avoid it where transparency, accessibility, or account identity matters.
Use the primary copy button for the actual character. Use the implementation codes when you need to place the same symbol in HTML, CSS, JavaScript, or technical documentation.
Related Symbols
View categoryWhere this category helps
Layout and form testing
Square Symbol help test how apps handle empty-looking input, spacing, wrapping, and copied text.
Spacing control
Use visible labels and Unicode values to choose no-break, thin, hair, zero-width, or standard spacing intentionally. For square symbol, keep the surrounding label and detail notes aligned with the intended use.
Audit carefully
Invisible characters can be hard to find later and may be blocked or stripped by usernames, forms, search boxes, and moderation tools. For square symbol, keep the surrounding label and detail notes aligned with the intended use.
Related categories
Move from square symbol into nearby categories when you need related Unicode signs, alternate notation, or a clearer symbol family.
Related categories in this set
Core categories
FAQ
How do I copy the Black Square?
Use the copy button on SymbolCopy to copy Black Square to your clipboard, then paste it into your document, app, website, or social post.
What is the Unicode for Black Square?
The Unicode value for Black Square is U+25A0.