Convert between UIImage and Base64 string
Solution 1:
Swift
First we need to have image's NSData
//Use image name from bundle to create NSData
let image : UIImage = UIImage(named:"imageNameHere")!
//Now use image to create into NSData format
let imageData:NSData = UIImagePNGRepresentation(image)!
//OR next possibility
//Use image's path to create NSData
let url:NSURL = NSURL(string : "urlHere")!
//Now use image to create into NSData format
let imageData:NSData = NSData.init(contentsOfURL: url)!
Swift 2.0 > Encoding
let strBase64:String = imageData.base64EncodedStringWithOptions(.Encoding64CharacterLineLength)
Swift 2.0 > Decoding
let dataDecoded:NSData = NSData(base64EncodedString: strBase64, options: NSDataBase64DecodingOptions.IgnoreUnknownCharacters)!
Swift 3.0 > Decoding
let dataDecoded : Data = Data(base64Encoded: strBase64, options: .ignoreUnknownCharacters)!
Encoding :
let strBase64 = imageData.base64EncodedString(options: .lineLength64Characters)
print(strBase64)
Decoding :
let dataDecoded:NSData = NSData(base64EncodedString: strBase64, options: NSDataBase64DecodingOptions(rawValue: 0))!
let decodedimage:UIImage = UIImage(data: dataDecoded)!
print(decodedimage)
yourImageView.image = decodedimage
Swift 3.0
let dataDecoded : Data = Data(base64Encoded: strBase64, options: .ignoreUnknownCharacters)!
let decodedimage = UIImage(data: dataDecoded)
yourImageView.image = decodedimage
Objective-C
iOS7 > version
You can use NSData's
base64EncodedStringWithOptions
Encoding :
- (NSString *)encodeToBase64String:(UIImage *)image {
return [UIImagePNGRepresentation(image) base64EncodedStringWithOptions:NSDataBase64Encoding64CharacterLineLength];
}
Decoding :
- (UIImage *)decodeBase64ToImage:(NSString *)strEncodeData {
NSData *data = [[NSData alloc]initWithBase64EncodedString:strEncodeData options:NSDataBase64DecodingIgnoreUnknownCharacters];
return [UIImage imageWithData:data];
}
iOS 6.1 and < version
First Option : Use this link to encode
and decode
image
Add Base64 class in your project
.
Encoding :
NSData* data = UIImageJPEGRepresentation(yourImage, 1.0f);
NSString *strEncoded = [Base64 encode:data];
Decoding :
NSData* data = [Base64 decode:strEncoded ];;
image.image = [UIImage imageWithData:data];
Another Option: Use QSUtilities for encoding
and decoding
Solution 2:
Swift 5
Encoding
func convertImageToBase64String (img: UIImage) -> String {
return img.jpegData(compressionQuality: 1)?.base64EncodedString() ?? ""
}
Decoding
func convertBase64StringToImage (imageBase64String:String) -> UIImage {
let imageData = Data.init(base64Encoded: imageBase64String, options: .init(rawValue: 0))
let image = UIImage(data: imageData!)
return image!
}
Note: Tested in xcode 10.2
Swift 4
Encoding
func convertImageToBase64String (img: UIImage) -> String {
let imageData:NSData = UIImageJPEGRepresentation(img, 0.50)! as NSData //UIImagePNGRepresentation(img)
let imgString = imageData.base64EncodedString(options: .init(rawValue: 0))
return imgString
}
Decoding
func convertBase64StringToImage (imageBase64String:String) -> UIImage {
let imageData = Data.init(base64Encoded: imageBase64String, options: .init(rawValue: 0))
let image = UIImage(data: imageData!)
return image
}
Note: Tested in xcode 9.4.1
Solution 3:
Swift 4.2 Extension method
extension UIImage {
func toBase64() -> String? {
guard let imageData = self.pngData() else { return nil }
return imageData.base64EncodedString(options: Data.Base64EncodingOptions.lineLength64Characters)
}
}
XCode 9.1 and Swift 4.0
//
// Convert UIImage to a base64 representation
//
class func convertImageToBase64(image: UIImage) -> String {
let imageData = UIImagePNGRepresentation(image)!
return imageData.base64EncodedString(options: Data.Base64EncodingOptions.lineLength64Characters)
}
//
// Convert a base64 representation to a UIImage
//
class func convertBase64ToImage(imageString: String) -> UIImage {
let imageData = Data(base64Encoded: imageString, options: Data.Base64DecodingOptions.ignoreUnknownCharacters)!
return UIImage(data: imageData)!
}
Solution 4:
SWIFT 3.0, XCODE 8.0
Replace String with your URL. and testImage is an outlet of ImageView
// Put Your Image URL
let url:NSURL = NSURL(string : "http://.jpg")!
// It Will turn Into Data
let imageData : NSData = NSData.init(contentsOf: url as URL)!
// Data Will Encode into Base64
let str64 = imageData.base64EncodedData(options: .lineLength64Characters)
// Now Base64 will Decode Here
let data: NSData = NSData(base64Encoded: str64 , options: .ignoreUnknownCharacters)!
// turn Decoded String into Data
let dataImage = UIImage(data: data as Data)
// pass the data image to image View.:)
testImage.image = dataImage
Hope It Helps Thanks.