(Delphi ActiveX) Download Image (JPG, GIF, etc.) to Base64

See more HTTP Examples

Chilkat for Delphi Downloads Chilkat ActiveX DLL for Delphi Chilkat non-ActiveX DLL for Delphi * The examples here use the ActiveX DLL.

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Chilkat_TLB;

...

procedure TForm1.Button1Click(Sender: TObject);
var
success: Integer;
http: TChilkatHttp;
bd: TChilkatBinData;
statusCode: Integer;
base64_image_data: WideString;

begin
success := 0;

// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

http := TChilkatHttp.Create(Self);
http.KeepResponseBody := 1;

bd := TChilkatBinData.Create(Self);

success := http.DownloadBd('https://www.chilkatsoft.com/images/starfish.jpg',bd.ControlInterface);
statusCode := http.LastStatus;
if (success = 0) then
  begin
    if (statusCode = 0) then
      begin
        // Unable to either send the request or get the response.
        Memo1.Lines.Add(http.LastErrorText);
      end
    else
      begin
        // We got a response, but the status code was not in the 200s
        Memo1.Lines.Add('Response status code: ' + IntToStr(statusCode));
        // Examine the response body.
        Memo1.Lines.Add('Response body:');
        Memo1.Lines.Add(http.LastResponseBody);
      end;
    Memo1.Lines.Add('Download failed.');

  end
else
  begin
    Memo1.Lines.Add('Download success, response status = ' + IntToStr(statusCode));

    base64_image_data := bd.GetEncoded('base64');
    Memo1.Lines.Add('image data in base64 format:');
    Memo1.Lines.Add(base64_image_data);
  end;
end;