Convert Image to Base64 string in iOS

Swift

//create image instance
//with image name from bundle
var image : UIImage = UIImage(named:"imageNameHere")
var imageData = UIImagePNGRepresentation(image)

//OR with path
var url:NSURL = NSURL.URLWithString("urlHere")
var imageData:NSData = NSData.dataWithContentsOfURL(url, options: nil, error: nil)

Encoding

let base64String = imageData.base64EncodedStringWithOptions(NSDataBase64EncodingOptions.fromRaw(0)!)
println(base64String)

Decoding

let decodedData = NSData(base64EncodedString: base64String, options: NSDataBase64DecodingOptions.fromRaw(0)!)
var decodedimage = UIImage(data: decodedData)
println(decodedimage)
yourImageView.image = decodedimage as UIImage

iOS7 > Objectice-C version

You can use NSData’s base64EncodedStringWithOptions

Now encode as:

- (NSString *)encodeToBase64String:(UIImage *)image {
return [UIImagePNGRepresentation(image) base64EncodedStringWithOptions:NSDataBase64Encoding64CharacterLineLength];
}

Decode as:

- (UIImage *)decodeBase64ToImage:(NSString *)strEncodeData {
NSData *data = [[NSData alloc]initWithBase64EncodedString:strEncodeData options:NSDataBase64DecodingIgnoreUnknownCharacters];
return [UIImage imageWithData:data];
}