What is the regex for mime type?

The regex pattern for mime type is `^[a-zA-Z]+\/[a-zA-Z0-9.+-]+$`. This pattern validates standard mime type format (type/subtype).

How do I use this regex in JavaScript?

In JavaScript, create the regex with `const regex = /^[a-zA-Z]+\\/[a-zA-Z0-9.+-]+$/;` and test with `regex.test(yourValue)`. It returns `true` if the value matches.

How do I use this regex in Python?

In Python, use `import re; re.match(r'^[a-zA-Z]+\/[a-zA-Z0-9.+-]+$', value)`. The raw string prefix (`r`) prevents Python from interpreting backslashes as escape characters.

Is this regex case-sensitive?

This pattern explicitly handles both uppercase and lowercase via the character classes. No additional flags needed.

Regex for MIME Type

Regex Pattern

^[a-zA-Z]+\/[a-zA-Z0-9.+-]+$

Standard MIME type format (type/subtype)

Quick Answer

The regex pattern for mime type is `^[a-zA-Z]+\/[a-zA-Z0-9.+-]+$`. Standard MIME type format (type/subtype). This works in JavaScript, Python, Ruby, PHP, Java, and most regex engines that support PCRE syntax.

Test Examples

Input	Result
text/html	✓ Matches
application/json	✓ Matches
image/svg+xml	✓ Matches
application/vnd.api+json	✓ Matches
text	✗ No match
html	✗ No match
text/html/extra	✗ No match
/json	✗ No match

Code Examples

javascript

const regex = /^[a-zA-Z]+\\/[a-zA-Z0-9.+-]+$/;
const isValid = regex.test(value);

python

import re
pattern = r'^[a-zA-Z]+\/[a-zA-Z0-9.+-]+$'
if re.match(pattern, value):
    print("valid")

ruby

pattern = /^[a-zA-Z]+\/[a-zA-Z0-9.+-]+$/
if value =~ pattern
  puts "valid"
end

php

if (preg_match('/^[a-zA-Z]+\\/[a-zA-Z0-9.+-]+$/', $value)) {
    echo "valid";
}

java

String pattern = "^[a-zA-Z]+\\/[a-zA-Z0-9.+-]+$";
boolean isValid = value.matches(pattern);

Frequently Asked Questions

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