If your image file uses little endian, some adjustments need to be made.ģ) When trying to use ImageMagick to strip exif data, I noticed that I ended up with a larger file than what I started with.

Nikon has information after this which my program truncates.Ģ) Because this is for Nikon format, it assumes big endian byte order. Normally image programs read up to the first EOI marker found. They encode this data on to the end of the image file by creating a second EOI marker. Nikon's JPEG format adds somthing to the very end of each file it creates. The code below does the following:ġ) Gets the current orientation of the image.Ģ) Removes all data contained in APP1 (Exif data) and APP2 (Flashpix data) by blanking.ģ) Recreates the APP1 orientation marker and sets it to the original value.Ĥ) Finds the first EOI marker (End of Image) and truncates the file if nessasary.ġ) This program is used for my Nikon camera. If you want other ways to cover your digital footprint, I've assembled a list of resources: via Google Doc or Pastebin.I recently undertook this project in C. On a computer, download the zipped code, open the folder, and open index.html in a browser with the internet turned off.Īll processing happens directly in the browser- no information is stored or sent anywhere.īug reports or questions to: repo at /everestpipkin/image-scrubber This tool works offline: on a phone you can load the page or add it to the homescreen, then turn on airplane mode (or turn off wifi/data) before opening any pictures. The blur function runs on top of shuffled, noisy, upscaled pixels and is fairly secure but sensitive information should be covered with the paint tool. You can change your brush size via the slider. Dragging on the image will paint on or blur it. You can select between painting over the image or blurring it out. Maximum size is 2500x2500 pixels - larger images will be scaled down. The program will display the data it is removing.Ĭlick okay, and you can then save the scrubbed image by hitting save or right clicking on it and saving it. It will remove identifying metadata ( Exif data) from photographs, and also allow you to selectively blur parts of the image to cover faces and other identifiable information.Ĭlick or drag onto the open button to open a photograph. This is a tool for anonymizing photographs taken at protests.

Image metadata remover