String Tools - Text Manipulation Utilities Online

Powerful text manipulation tools - encode, decode, replace, filter, and transform strings. Convert case, encode Base64/URL/HTML, extract emails, remove duplicates, count words and more.🔒 All processing happens in your browser. Your data never leaves your device.

💡 Quick Tips

  • •Case Conversion: Change text to uppercase, lowercase, or title case
  • •Encoding: Encode/decode Base64, URL, and HTML entities
  • •Extract Data: Pull out emails and URLs from text
  • •Clean Text: Remove duplicates, sort lines, trim spaces

How to Use

  1. 1Select the tool you want to use from the dropdown
  2. 2Paste or type your text in the input area
  3. 3Click "Transform Text" to apply the selected operation
  4. 4Copy the result or apply another transformation

Example

Input:

hello world

Output:

HELLO WORLD (uppercase) or aGVsbG8gd29ybGQ= (base64)

Frequently Asked Questions

What encoding formats are supported?

We support Base64, URL encoding, and HTML entity encoding/decoding. These are the most common formats used in web development and data processing.

Can I process multiple lines?

Yes! Many tools work with multi-line text, including Remove Duplicate Lines, Sort Lines, and Word Count which provides line statistics.

Is my text data safe?

Absolutely! All processing happens entirely in your browser. Your text is never uploaded to any server.