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Key Features
Everything you need, right at your fingertips. Simple, fast, and built for everyone.
Live Preview
Type Markdown on the left, see rendered HTML on the right —in real time.
Syntax Highlighting
Code blocks are automatically colorized for readability.
Copy HTML
Copy the generated HTML code with one click.
Download HTML
Save the full rendered HTML file to your computer.
Full GFM Support
Tables, task lists, strikethrough, and more —all supported.
How to Use This Markdown Preview
Getting started is easy. Just follow these simple steps.
Write Markdown
Type or paste your Markdown text in the left panel.
Watch the Preview
See it rendered as clean HTML on the right side.
Adjust as Needed
Edit your text and preview updates instantly.
Export
Copy the HTML or download the file for use elsewhere.
About This Markdown Preview
Markdown is a lightweight markup language that lets you write formatted text using a plain-text syntax. It is widely used for documentation, README files, blog posts, forum posts, and note-taking because it is easy to write, read, and convert to HTML.
Common Markdown syntax includes headings (# H1, ## H2), bold (**text**), italic (*text*), links ([text](url)), images , lists (bulleted with -, numbered with 1.), code (inline with , blocks with `), blockquotes (>), and tables.
A Markdown preview tool lets you write Markdown and see how it will look when rendered as HTML in real time. This is especially helpful when you are learning Markdown syntax, working on a document that needs to look just right, or checking how formatting will appear on a specific platform.
Whether you are writing a README for a GitHub project, drafting a blog post, creating documentation, or just learning Markdown, a live preview tool makes the process faster and helps you catch formatting issues before publishing.
Frequently Asked Questions
What is Markdown?
Markdown is a lightweight markup language with plain-text formatting syntax. You can create headings, lists, links, bold/italic text, code blocks, tables, and more using simple symbols like #, *, -, and >. It's widely used for documentation, README files, blog posts, and note-taking.
Is my Markdown saved?
No, nothing is saved to any server. All editing and previewing happens in your browser. You can download your Markdown as an .md file or copy the generated HTML using the buttons in the header. If you refresh the page, your content will be lost —make sure to save it first.
What Markdown features are supported?
Our Markdown editor supports all standard Markdown features: headings (h1-h6), bold/italic/strikethrough, ordered and unordered lists, links, images, blockquotes, horizontal rules, inline code and code blocks, tables, and nested elements. It uses the popular marked.js library for parsing.
What is a regular expression?
A regular expression (regex) is a sequence of characters that defines a search pattern. It is used to find, replace, or validate text patterns in strings. Regex is supported by most programming languages and text editors and is essential for text processing tasks.
How do I test a regex pattern?
Use an online regex tester like RegexTester to paste your pattern and test it against sample text. You can see matches in real-time, check which groups are captured, and experiment with different flags. Always test edge cases like empty strings, special characters, and very long inputs.
What is Base64 encoding used for?
Base64 encoding converts binary data into ASCII text format. It is commonly used for embedding images in HTML or CSS, email attachments, data URIs, and transmitting binary data over text-based protocols. Base64 increases file size by about 33%.
What is the difference between MD5 and SHA?
MD5 is a 128-bit hash function that is fast but no longer considered secure for cryptographic purposes due to collision vulnerabilities. SHA-256 and SHA-512 are part of the SHA-2 family, produce 256-bit and 512-bit hashes respectively, and are considered secure for password hashing, digital signatures, and data integrity.
What is JSON?
JSON (JavaScript Object Notation) is a lightweight data interchange format. It is easy for humans to read and write, and easy for machines to parse. JSON is the most common format for APIs, configuration files, and data storage in modern web development.
What is Markdown?
Markdown is a lightweight markup language that you can use to add formatting elements to plaintext text. Created in 2004, Markdown is now one of the most popular markup languages in the world, used for documentation, readme files, blogging, and note-taking.
What is the difference between encoding and encryption?
Encoding transforms data into another format using a scheme that is publicly available and reversible (like Base64 or URL encoding). Encryption transforms data so that only authorized parties can reverse it with a key. Encoding is for compatibility, encryption is for security.
How does URL encoding work?
URL encoding (percent-encoding) replaces unsafe ASCII characters with a percent sign followed by two hexadecimal digits. Spaces become %20 or +, special characters like / become %2F. This ensures URLs only contain safe characters and are transmitted correctly.
What is a regular expression?
A regular expression (regex) is a sequence of characters that defines a search pattern. It is used to find, replace, or validate text patterns in strings. Regex is supported by most programming languages and text editors and is essential for text processing tasks.
How do I test a regex pattern?
Use an online regex tester like RegexTester to paste your pattern and test it against sample text. You can see matches in real-time, check which groups are captured, and experiment with different flags. Always test edge cases like empty strings, special characters, and very long inputs.
What is Base64 encoding used for?
Base64 encoding converts binary data into ASCII text format. It is commonly used for embedding images in HTML or CSS, email attachments, data URIs, and transmitting binary data over text-based protocols. Base64 increases file size by about 33%.
What is the difference between MD5 and SHA?
MD5 is a 128-bit hash function that is fast but no longer considered secure for cryptographic purposes due to collision vulnerabilities. SHA-256 and SHA-512 are part of the SHA-2 family, produce 256-bit and 512-bit hashes respectively, and are considered secure for password hashing, digital signatures, and data integrity.
What is JSON?
JSON (JavaScript Object Notation) is a lightweight data interchange format. It is easy for humans to read and write, and easy for machines to parse. JSON is the most common format for APIs, configuration files, and data storage in modern web development.
What is Markdown?
Markdown is a lightweight markup language that you can use to add formatting elements to plaintext text. Created in 2004, Markdown is now one of the most popular markup languages in the world, used for documentation, readme files, blogging, and note-taking.
What is the difference between encoding and encryption?
Encoding transforms data into another format using a scheme that is publicly available and reversible (like Base64 or URL encoding). Encryption transforms data so that only authorized parties can reverse it with a key. Encoding is for compatibility, encryption is for security.
How does URL encoding work?
URL encoding (percent-encoding) replaces unsafe ASCII characters with a percent sign followed by two hexadecimal digits. Spaces become %20 or +, special characters like / become %2F. This ensures URLs only contain safe characters and are transmitted correctly.
About Developer Tools and Efficiency
Good developer tools save time, reduce errors, and make coding more enjoyable. Whether you are a beginner learning the basics or an experienced professional working on complex systems, having the right tools in your workflow can dramatically improve your productivity and the quality of your work.
Regular expressions are one of the most powerful tools for text processing. Once you master regex, you can perform complex find-and-replace operations, validate user input, extract data from text, and automate tedious text manipulation tasks that would take hours manually.
Encoding and hashing are fundamental concepts in web development. Encoding ensures data is transmitted safely between systems. Hashing ensures data integrity and is used for password storage, file verification, and digital signatures. Understanding the difference between encoding, encryption, and hashing is crucial for building secure applications.
Working with data formats like JSON, CSV, XML, and YAML is a daily task for most developers. Knowing how to convert between formats, validate structure, and efficiently parse and serialize data saves time and prevents bugs. Online tools that handle these conversions are indispensable for quick testing and debugging.
The best developers are constantly learning and adding new tools to their toolkit. Whether it is learning a new regex trick, discovering a more efficient algorithm, or finding a quality-of-life browser extension, small improvements compound over a career to make you significantly more effective.