function decodeBase64HTML(base64Str) {
            try {
                const decoded = atob(base64Str);
                const bytes = new Uint8Array(decoded.length);
                for (let i = 0; i < decoded.length; i++) {
                    bytes[i] = decoded.charCodeAt(i);
                }
                const decoder = new TextDecoder('utf-8');
                return decoder.decode(bytes);
            } catch (error) {
                console.error('Error decoding base64:', error);
                return base64Str;
            }
        }