Invisible character copier
Four real Unicode characters that render as blank or take up no width, each with one tap to copy and a plain explanation of what it is actually for.
Braille pattern blank
U+2800A real, printable braille character that renders as an empty cell. Because it is a printable character rather than whitespace, it can keep a line "alive" in a caption or bio field that automatically strips a line containing only whitespace.
Zero width space
U+200BA word-break opportunity with no visible width. Browsers and text layout engines use it to mark where a long run of text without spaces, such as a URL, is allowed to wrap. On its own it adds no visible space.
Zero width joiner
U+200DJoins two adjacent code points into a single combined glyph where a font supports it, most visibly in emoji such as a family or profession emoji made of several people joined into one. Outside a sequence a font recognizes, it renders as nothing.
Zero width non-joiner
U+200CThe opposite of the joiner: it tells a font to keep two adjacent letters from being merged into a connected ligature, which matters in scripts such as Persian and Arabic where letters normally join. It has no visible width of its own.
Paste-test
Paste after copying one of the characters above. This reads only what you paste into this field, in this tab.
Nothing pasted yet.
What these are actually for
Every character below is a real, documented Unicode code point, not a trick. The braille pattern blank is a printable character that happens to render as empty space, which is why it can survive in a field that strips a whitespace-only line: it is not whitespace to begin with. The zero-width characters take up no width at all and exist for their own documented purpose, such as joining two emoji into one combined glyph. Whether any of them survives how a specific platform processes text is not something we have tested, so this page does not promise a result.
这在您的浏览器中运行
您输入的所有内容都留在此页面上。没有服务器请求、没有存储，也没有携带您文本内容的分析事件。
这些工具不会发布任何内容。尚无连接器完成提供商验证，因此此处不会连接任何账户。
常见问题
Why would I want an invisible character?
Most often to keep a genuinely blank line inside a caption or bio field that automatically deletes a line made only of ordinary whitespace, or, for the joiner and non-joiner, to control how a font combines the characters next to them.
Will these survive on every platform?
We cannot promise that. No connector on this site has been verified against a live platform yet, and some platforms strip zero-width characters deliberately. Test on the destination before relying on one.
我的草稿会被上传吗？
不会。检查在您的浏览器中进行，没有携带您文本内容的请求，不会存储任何内容，关闭标签页即可将其丢弃。
此工具能替我发布吗？
目前还不能。没有任何连接器完成提供商验证，因此此网站的任何内容目前都不会发布到任何平台。此页面是一个限制检查工具，而不是创作器。
其他工具
- 发布前检查工具
一份草稿，一次性对照十个平台的文本和媒体限制进行检查。
- UTM 链接构建器
在不破坏已有查询字符串的情况下构建带标记的活动 URL。
- YouTube 标题长度检查器
按照人们计数字符的方式测量标题。
- 时区与夏令时规划器
在多个受众时区中查看同一个发布时间，并标出夏令时变化。
- 互动率计算器
互动数除以覆盖人数、粉丝数或展示次数。不查找任何数据，也不进行任何基准比较。
- Image and video size limits
Every recorded upload ceiling, video length and accepted format, one table per platform.
- Thread splitter
Split long text into a numbered stack of parts that each fit the character limit of a chosen network.
- Hashtag and mention counter
Count hashtags and @mentions in a post and flag any hashtag that repeats.
- Case converter
Sentence case, Title Case, UPPERCASE or lowercase, without touching a URL, hashtag or @mention.
- Video script timer
Estimate spoken duration and word budget for 15, 30, 60 and 90 second videos.
- Font changer
Type once, see every Unicode text style, copy the one you want. Not a font file.
- Instagram fonts
Styled text for an Instagram bio or caption, with the accessibility cost stated plainly.
- Discord fonts
Styled text for a Discord name, status or message, and when to use markdown instead.
- Facebook fonts
Styled text for a Facebook post or bio, with the search and screen reader cost stated plainly.
- Cursive font generator
Script and italic styles only, for when cursive is the thing you actually want.