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    <p>Here is code to copy all available information from a CLLocation object into the proper format for a GPS metadata dictionary:</p> <pre><code>- (NSDictionary *)getGPSDictionaryForLocation:(CLLocation *)location { NSMutableDictionary *gps = [NSMutableDictionary dictionary]; // GPS tag version [gps setObject:@"2.2.0.0" forKey:(NSString *)kCGImagePropertyGPSVersion]; // Time and date must be provided as strings, not as an NSDate object NSDateFormatter *formatter = [[NSDateFormatter alloc] init]; [formatter setDateFormat:@"HH:mm:ss.SSSSSS"]; [formatter setTimeZone:[NSTimeZone timeZoneWithAbbreviation:@"UTC"]]; [gps setObject:[formatter stringFromDate:location.timestamp] forKey:(NSString *)kCGImagePropertyGPSTimeStamp]; [formatter setDateFormat:@"yyyy:MM:dd"]; [gps setObject:[formatter stringFromDate:location.timestamp] forKey:(NSString *)kCGImagePropertyGPSDateStamp]; [formatter release]; // Latitude CGFloat latitude = location.coordinate.latitude; if (latitude &lt; 0) { latitude = -latitude; [gps setObject:@"S" forKey:(NSString *)kCGImagePropertyGPSLatitudeRef]; } else { [gps setObject:@"N" forKey:(NSString *)kCGImagePropertyGPSLatitudeRef]; } [gps setObject:[NSNumber numberWithFloat:latitude] forKey:(NSString *)kCGImagePropertyGPSLatitude]; // Longitude CGFloat longitude = location.coordinate.longitude; if (longitude &lt; 0) { longitude = -longitude; [gps setObject:@"W" forKey:(NSString *)kCGImagePropertyGPSLongitudeRef]; } else { [gps setObject:@"E" forKey:(NSString *)kCGImagePropertyGPSLongitudeRef]; } [gps setObject:[NSNumber numberWithFloat:longitude] forKey:(NSString *)kCGImagePropertyGPSLongitude]; // Altitude CGFloat altitude = location.altitude; if (!isnan(altitude)){ if (altitude &lt; 0) { altitude = -altitude; [gps setObject:@"1" forKey:(NSString *)kCGImagePropertyGPSAltitudeRef]; } else { [gps setObject:@"0" forKey:(NSString *)kCGImagePropertyGPSAltitudeRef]; } [gps setObject:[NSNumber numberWithFloat:altitude] forKey:(NSString *)kCGImagePropertyGPSAltitude]; } // Speed, must be converted from m/s to km/h if (location.speed &gt;= 0){ [gps setObject:@"K" forKey:(NSString *)kCGImagePropertyGPSSpeedRef]; [gps setObject:[NSNumber numberWithFloat:location.speed*3.6] forKey:(NSString *)kCGImagePropertyGPSSpeed]; } // Heading if (location.course &gt;= 0){ [gps setObject:@"T" forKey:(NSString *)kCGImagePropertyGPSTrackRef]; [gps setObject:[NSNumber numberWithFloat:location.course] forKey:(NSString *)kCGImagePropertyGPSTrack]; } return gps; } </code></pre> <p>Assign the dictionary returned by this method as the value for the <code>kCGImagePropertyGPSDictionary</code> key in the metadata dictionary you pass to <code>writeImageDataToSavedPhotosAlbum:metadata:completionBlock:</code> or <code>CGImageDestinationAddImage()</code>.</p>
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    1. POSaving Geotag info with photo on iOS4.1
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    1. USAnomie
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    1. COI think you should use Double instead of Float with latitude and longitude... otherwise you could be out with a few feet/meters.
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    2. CO@Anomie , talking of kCGImagePropertyGPSDateStamp and kCGImagePropertyGPSTimeStamp , is it possible to add our own date/time.,instead of taking it from "location.timestamp".?
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    3. CO@ShishirShetty: You could fake any bit of the geolocation data, if that's what you want to do.
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