Base64 Encode Online

Base64 Encode & Decode Online

Welcome to Webtooly’s robust Base64 Encode & Decode tool, a developer-friendly, all-in-one utility designed to help you easily convert data to and from Base64 format. Whether you’re encoding text, images, PDFs, or working with web-safe URLs, our tool supports a wide range of use cases and programming languages JavaScript, Python, PHP, Java, C#, Linux, and more.

Why Use Base64 Encoding?

Base64 encoding transforms binary data (images, files, audio) into text format using a 64-character alphabet (A–Z, a–z, 0–9, +, /, and = for padding). This ensures safe transmission over systems limited to text, such as JSON, HTML, XML, or email. It's widely used to embed images directly into HTML/CSS or transmit files as text.

Key Features of Our Tool

• Text Encode/Decode: Convert any text to Base64 or back in seconds.
• Image & File Support: Upload images, PDFs, or files get them encoded or decoded instantly.
• URL-Safe Base64: Maintain compatibility with URL-safe encoding (replacing +/ with -_).
• Programming Snippets: Built-in examples for JavaScript, Python, PHP, Java, C#, and Linux.
• No Sign-Up Required: Fast, free, and privacy-focused data is not logged or stored.

Base64 Encode & Decode Summary

Feature	Encode	Decode
Text	Yes	Yes
Images (PNG, JPG, GIF)	Yes	Yes
PDF, Word, Excel	Yes	Yes
URL-Safe Base64	Yes	Yes
JS, PHP, Python, Java, C#, Linux examples	Yes	Yes

Interactive Examples

1. Text Encoding Example

Hello World!

Encoded:

SGVsbG8gV29ybGQh

Decoded Back:

Hello World!

2. Image Encoding Example (PNG)

Paste a Base64 image string below in the tool to see the decoded image preview and download options.

Base64 in Programming Languages

Language	Encode	Decode
JavaScript	btoa("Hello World!")	atob("SGVsbG8gV29ybGQh")
Python	base64.b64encode(b"Hello World!")	base64.b64decode("SGVsbG8gV29ybGQh")
PHP	base64_encode("Hello World!")	base64_decode("SGVsbG8gV29ybGQh")
Java	Base64.getEncoder().encodeToString("Hello World!".getBytes())	new String(Base64.getDecoder().decode("SGVsbG8gV29ybGQh"))
C#	Convert.ToBase64String(System.Text.Encoding.UTF8.GetBytes("Hello World!"))	Encoding.UTF8.GetString(Convert.FromBase64String("SGVsbG8gV29ybGQh"))
Linux CLI	echo -n "Hello World!" | base64	echo SGVsbG8gV29ybGQh | base64 --decode

Use Case Spotlight

Imagine you're building a web app where users upload profile images. Instead of uploading the image separately, you can embed it directly into your HTML as:

<img src="data:image/png;base64, iVBORw0KGgoAAAANSUhEUg...">

This eliminates extra HTTP requests and simplifies client-server exchanges perfect for small images such as icons or avatars.

Frequently Asked Questions (800+ words)

Q1: What is Base64 encoding?

Base64 encoding is a process that converts binary data into ASCII text using a 64-character alphabet (A–Z, a–z, 0–9, +, /). It's commonly used to embed binary data in systems that handle text only, like JSON or email.

Q2: How do I use this tool for online Base64 encoding?

Simply paste your text, image, or file into the appropriate tab on the tool, choose 'Encode' or 'Decode', and get your result instantly no signup or installation required.

Q3: How do I encode an image to Base64?

Upload a JPG or PNG image using our tool. It converts the image to a Base64 string, which can be used in HTML/CSS (e.g., <img src="data:image/png;base64,...").

Q4: What does URL-safe Base64 mean?

URL-safe Base64 uses - and _ instead of + and / to avoid issues in URLs and filesystem names.

Q5: How much data can I encode here?

This tool supports Base64 conversion of small to medium files (up to ~10 MB). For larger files, offline or command-line tools are recommended.

Q6: Can I integrate Base64 encode in JavaScript?

Yes. Example: let encoded = btoa("Hello World!"); Similarly, decode with atob(encoded);.

Q7: Is Base64 secure?

No – it offers no encryption or confidentiality. The data is easily reversible and meant for encoding, not secure communication.

Q8: How do I decode a Base64 PDF?

Use the 'Decode' option, then download the binary PDF file created after decoding your input.

Q9: Can I do Base64 encode/decode in the command line?

Yes. For Linux/macOS: base64 command. Windows PowerShell: [Convert]::ToBase64String(…) / [Convert]::FromBase64String(…).

Q10: How do I choose between Base64 encoding and decoding?

Pick Encode when starting with text, image, or file you want to transform. Choose Decode if you have a Base64 string and want the original content back.