工具 Articles

totp-generator is a simple, lightweight, and reliable local TOTP generator built on RFC 6238. This article explains its features, usage, and recommends a useful online tool.

Sometimes a photo looks fine on your phone or computer, but rotates after being uploaded. This happens due to the Exif orientation metadata. This article explains the reason and suggests tools to fix it.

Exif (Exchangeable Image File Format) is a metadata standard embedded in image files, storing details such as device, time, aperture, shutter speed, and GPS location. It is useful in photo management, photography learning, and forensics, but may also pose privacy risks.