BMP转PNG
将BMP文件转换为PNG — 免费、私密、即时。完全在浏览器中运行，无需上传任何文件。
拖放您的BMP文件，即刻转换为PNG。无需上传 — 一切在浏览器中完成。快速、私密的转换，无需注册、无水印、无文件大小限制。还能为地球做贡献！
将文件拖放到此处或点击浏览
支持的格式： BMP, DDS, GIF, HDR, ICO, JPEG, KTX, PGM, PIC, PNG, PPM, PSD, TGA, WebP
Folder
About the PNG Format
PNG (Portable Network Graphics) is the most widely used lossless image format on the web. Introduced in the mid-1990s as a patent-free alternative to GIF, PNG supports full-colour images with an alpha channel for transparency. Lossless compression means every pixel is preserved exactly, making PNG ideal for screenshots, graphics with text, icons, and any image where quality cannot be sacrificed. The format handles 8-bit and 16-bit colour depths, and its transparency support allows clean compositing on any background — a key reason it remains the go-to choice for web graphics and UI assets.
功能
近零CO₂
典型的服务器转换器消耗网络能源用于上传、数据中心电力用于处理、再次消耗网络用于下载。WebConverter仅使用您设备的CPU — 无数据传输，无服务器足迹。
安装以离线使用
WebConverter是一款渐进式Web应用。在移动设备上点击"添加到主屏幕"，或在桌面地址栏点击"安装"。安装后完全离线运行 — 适合飞机上、偏远地区或网络中断时使用。
