How to Share Code Snippets Online Instantly — Free & Secure

Whether you are asking a colleague to review a function, helping a student debug their homework, or transferring a script from your work computer to your home laptop, sharing code snippets quickly is a daily need for developers. Here is the fastest way to do it securely.

The Problem with Sharing Code via Chat Apps

Most developers resort to one of these methods for sharing code:

• WhatsApp or Telegram — no syntax highlighting, monospace font is hard to read, stored on their servers forever.
• Slack or Discord — good for teams with accounts, but useless if the other person is not on your workspace.
• GitHub Gists — requires a GitHub account, and gists are often public by default which is a privacy risk.
• Pastebin — works but stores your code permanently on their servers and shows ads.

None of these are ideal for a quick, private, one-time code transfer. What you want is something instant, with syntax highlighting, that does not permanently store your proprietary code on a third-party server.

Shareli: Instant Code Sharing with Syntax Highlighting

Shareli supports Markdown formatting and automatic syntax highlighting for all major programming languages. When you paste a code block using triple backticks, it renders beautifully with colour-coded syntax on the other person's screen in real time.

Here is how to share a code snippet with a colleague in seconds:

1. Open shareli.online and click "Create Private Room".
2. Share the room link with your colleague via any channel.
3. Paste your code using Markdown code block format (triple backticks with the language name).
4. Click Send — your colleague sees the highlighted code instantly on their screen.
5. Set a 10-minute timer — the code disappears automatically when you are done reviewing.

Supported Programming Languages

Shareli uses Highlight.js for syntax highlighting, which supports over 190 languages including:

Why Shareli is Better than Pastebin for Code

Pastebin is a classic tool, but it has aged poorly. Free Pastebin pastes are public by default, which means search engines can index your code. Even "private" pastes are stored on Pastebin's servers indefinitely. If you accidentally paste API keys or database credentials, they can remain accessible for years.

Shareli takes the opposite approach. Your code is end-to-end encrypted and stored only in RAM — never in a database. When the timer you set runs out, the content is completely and permanently deleted. There is no way for it to be discovered by anyone because it no longer exists anywhere.

Perfect for Remote Teams and Students

Shareli's Private Room feature is ideal for:

• Remote pair programming sessions where you want to share code in real time.
• Students sharing code with a tutor or professor for review.
• Developers transferring scripts between their home and work computers.
• Sharing configuration files, API responses, or logs with a colleague for debugging.