How to safely mosaic/blur personal information (face, license plate) in photos without sending them to a server

§1. I empathize with these concerns: Anxiety about being “identified” behind fun SNS posts

"I want to upload photos of my travels and daily life on SNS, but I'm hesitant to do so because there are faces and car license plates of people I don't know in the background."

I want to upload a photo of my child, but I'm afraid that the school he attends or the location of his home will be identified from his name tag or the distinctive buildings in the neighborhood...''

"I want to edit images to protect my privacy, but I'm worried about the security of uploading important photos to an online mosaic processing site..."

While it has become easier to share recent events on SNS, the risk of having personal information identified by online "special groups" or "stalking" is increasing year by year. To protect your loved ones and yourself, it is essential to take thorough privacy protection measures before posting photos.

§2. Explanation of the cause: Why can location and personal information be identified from photos?

Hackers and stalkers figure out our homes and living areas based on minute information that makes us wonder, That's where they came from?''

• Reflections on eyes and reflective objects:

There have been incidents where the location of the photo was pinpointed based on the train route map or station name sign reflected in the "eyes" of a high-quality selfie, or the distortion of the scenery reflected on the window glass in the background.

• Car number, nameplate, telephone pole lot number:

If these appear in the background, you can quickly narrow down the geographic location.

• Position information in the image file (Exif information):

Photos taken with the smartphone's GPS function turned on have the accurate latitude and longitude'' of the shooting location recorded as internal data (Exif). If you upload this information to a blog or bulletin board without deleting it, you will be in the situation of telling the world where your home is.

If you use a free online mosaic creation tool'' on the Internet to create a mosaic to prevent these, you will end up uploading the unprocessed raw photo'' to an external web server, which poses the risk of secondary damage such as data leakage due to server hacks, etc.

§3. Tool-based solution: Safely and intuitively mosaic with ZeroTools

"I want to quickly and safely mosaic my important photos and post them without having to upload them to the internet..."

Our site's Image mosaic/blur processing tool provides both security and convenience.

This tool does not send any image data to an external server, and processes images 100% within the browser of your computer or smartphone.

Solution steps

1. Open the Image mosaic/blur processing tool page.

2. Load the photos you want to edit by dragging and dropping (this process is done within the device, so even large photos will be displayed instantly).

3. Select "Mosaic" or smooth "Blur" and choose the thickness of the brush.

4. Trace and fill in the parts of the photo you want to hide (face, license plate, background that might be identified) with your mouse or finger.

5. Click “Save processed image” to download.

By using this tool, you can safely post beautiful photos on SNS without leaking important private information to outside parties. Please make this a habit as a step before posting.