Copy the invisible character:
Why WhatsApp Does Not Allow Regular Spaces
WhatsApp actively prevents users from sending messages that contain only regular space characters (U+0020). When you type a message containing only spaces, the send button remains disabled. This is intentional, not a bug, and there are several technical reasons behind this decision.
At its core, WhatsApp validates input by trimming whitespace from both ends of the message string before processing. If the trimmed result is an empty string, the message is considered blank and the send action is blocked. This means a single space, ten spaces, or any number of regular space characters will all be treated identically as empty input. WhatsApp also applies this validation on the client side in the native app and on WhatsApp Web, so there is no way to bypass it by switching platforms.
From a product perspective, blocking empty messages reduces spam and prevents accidental sends. Without this safeguard, users could flood chats with hundreds of blank messages, degrading the experience for everyone. The validation also keeps message storage efficient since blank messages provide no useful content and would waste server resources. These same principles apply to most major messaging platforms including Telegram, iMessage, and Signal.
Step-by-Step Guide
- Tap the “Copy Blank Character” button above to copy the invisible character to your clipboard. The character is a single Unicode code point that will not be visible in any text field.
- Open WhatsApp on your phone and navigate to the chat where you want to send the blank message. You can use any individual or group conversation.
- Tap and hold the text input field at the bottom of the screen until the “Paste” context menu option appears.
- Tap “Paste” to insert the invisible character. You will not see anything appear in the input field, but the send button should now be enabled.
- Tap the send button to deliver your blank message. The recipient will see an empty message bubble in their chat.
- If you want to send a longer blank message, repeat the copy step and paste the character multiple times before sending.
What Character Is Used?
The character used for blank WhatsApp messages is the Hangul Filler, represented by the Unicode code point U+3164. This character originates from the Korean Hangul block in the Unicode standard and was originally designed as a placeholder or filler within Korean text rendering. Despite its origins, it has no visible glyph on most modern platforms, which makes it ideal for creating blank messages.
Unlike a regular space (U+0020), the Hangul Filler is not classified as whitespace by WhatsApp's input validator. Because it is technically a character rather than a space, WhatsApp treats it as valid text content and allows the message to be sent. This distinction is the key to the entire trick. The Unicode standard defines over 144,000 characters, and several of them share this property of being invisible yet non-whitespace, but the Hangul Filler is the most reliable choice across different operating systems and WhatsApp versions.
It is worth noting that the Hangul Filler may render differently on very old or non-standard devices. However, on all modern versions of Android, iOS, and WhatsApp Web, it consistently appears as a completely invisible character that passes through WhatsApp's input validation without issue.
Tips and Tricks
- You can paste multiple invisible characters to send a longer blank message that takes up more vertical space in the chat.
- The blank message works in both individual and group chats, including communities and broadcast lists.
- Recipients will see an empty message bubble in their chat. On most devices the bubble will appear as a small empty space.
- This method works on both Android and iOS, as well as WhatsApp Web on desktop browsers.
- You can combine the invisible character with regular visible text to create messages that appear to have extra leading or trailing whitespace.
- If the send button does not appear after pasting, try copying the character again from the button above and re-pasting it.
- The Hangul Filler character is safe to use and does not violate WhatsApp's terms of service since it is a valid Unicode character.
Different Methods for Blank WhatsApp Messages
While the Hangul Filler (U+3164) is the most popular and reliable character for sending blank WhatsApp messages, there are a few other Unicode characters that can achieve the same effect. Understanding these alternatives helps you pick the best option for your use case.
The Zero Width Space (U+200B) is another invisible Unicode character. It is commonly used in web development to allow line breaks in words that do not contain natural break points. On WhatsApp, it generally works as a blank message character, but it has been known to behave inconsistently on certain Android versions where it may be stripped or converted to a regular space during input processing.
The No-Break Space (U+00A0) is a space character that prevents automatic line breaking in text. Unlike the regular space, WhatsApp does not always trim No-Break Spaces when validating input. However, this character is less reliable than the Hangul Filler because some WhatsApp updates have tightened input validation and now treat it the same as a regular space.
The Ideographic Space (U+3000) is used in Chinese, Japanese, and Korean typography as a full-width space. It is wider than a standard space and is sometimes treated as a valid character by WhatsApp. However, on many devices it renders as a small visible gap rather than a truly invisible character, making it less ideal for sending completely blank messages.
Among all these options, the Hangul Filler remains the best choice because it is consistently invisible across all platforms, reliably passes WhatsApp's input validation, and has no rendering quirks on any modern device.
Why People Send Blank Messages
Sending blank messages might seem pointless at first glance, but there are actually several practical and fun reasons why people do it. Understanding these use cases helps explain why the feature has become so popular in messaging communities.
Pranks and humor. One of the most common reasons is simply to confuse friends. Sending a blank message can make someone wonder if their phone is glitching, and the confusion itself becomes the joke. This is especially popular among younger users who enjoy lighthearted tech-based pranks.
Testing message delivery. Sometimes people send blank messages to verify that a connection is working. If you are troubleshooting a chat issue with someone, a blank message can serve as a quick ping to confirm that messages are being sent and received without the distraction of actual content.
Clearing notification badges. On some devices and configurations, sending yourself a blank message can help clear a stuck notification badge. This is a niche use case but one that some users find genuinely helpful.
Privacy and discretion. Some users send blank messages when they want to mark a chat as active or signal their presence without leaving any readable content. This can be useful in situations where you want to notify someone that you are available without typing anything that could be screenshotted or misinterpreted.
Creative formatting. Content creators and designers sometimes use blank messages to create visual spacing in group chats or to test how empty bubbles render on different devices. This is particularly common in design-focused communities.
Blank Messages on WhatsApp Web
The same method works on WhatsApp Web, the browser-based version of WhatsApp that you can access at web.whatsapp.com. Since WhatsApp Web uses the same message validation logic as the mobile apps, you can copy the invisible character from this page and paste it directly into the WhatsApp Web message input field. The send button will become active and you can deliver a blank message to any chat from your desktop or laptop browser.
To use blank messages on WhatsApp Web, open the page in your browser and log in by scanning the QR code with your phone. Navigate to any conversation, click the message input field at the bottom, and paste the invisible character using Ctrl+V on Windows or Cmd+V on Mac. The send button will activate and you can press Enter or click it to send the blank message. The process is identical to the mobile experience and the recipient will see the same empty message bubble on their end regardless of which device they are using.
Related Guides
- Invisible Characters in Gaming — Learn how invisible characters are used in online games and how to type them.
- Troubleshooting Blank Text Issues — Common problems with invisible characters and how to fix them across platforms.
- Zero Width Space in HTML — How to use zero width space characters in web development and HTML.
Try It Now
Use our free blank text generator to create custom-length blank messages for WhatsApp:
Open Blank Text Generator