Data URI Decoder & Parser
Local ProcessingParse and decode data: URIs, extracting the MIME type, encoding scheme, decoded byte length, and text contents.
How It Works & Processing Standards
Parse and decode data: URIs, extracting the MIME type, encoding scheme, decoded byte length, and text contents.
Tool processing runs in your browser. If you create a calculator or conversion share link, its values are included in the URL. See the privacy policy for account, analytics and advertising data.
Current Limits
- Maximum input length: 100,000 characters
Shows what a data: URL embedded in HTML or CSS contains. Reads both Base64 and percent-encoded data.
How to Use Data URI Decoder & Parser
- 1Paste the Data URIThe whole string starting with data:.
- 2Read the detailsMIME type, encoding, byte size and text content.
- 3Download as a fileFor images or files, use Data URI → File.
Examples
Base64 text
Input: data:text/plain;base64,SGVsbG8=
Result: text/plain, base64, 5 bytes, content Hello
Percent-encoded text
Input: data:text/plain;charset=utf-8,%ED%95%9C%EA%B8%80
Result: percent-encoding, 6 bytes, content 한글
Common Use Cases
- How large an image or font embedded in CSS is
- Checking inline data in HTML email
- Inspecting a suspicious data: link during a security review
Frequently Asked Questions (FAQ)
Can it preview images?
It shows details and text content. Download images with Data URI → File to view them.
What does the byte count measure?
The decoded data. The Base64 string is about 33% longer.