⬛ 位图转 1 位Convert Bitmap to 1 Bit
按亮度阈值把图片变成黑白 1-bit。可设置「阈值」、「输出格式」、「质量」。Threshold luminance to a black-and-white 1-bit image. Settings: Threshold, Format, Quality.
使用说明与常见问题How-to & FAQ
「位图转 1 位」是什么？What is the Convert Bitmap to 1 Bit tool?
按亮度阈值把图片变成黑白 1-bit。可设置「阈值」、「输出格式」、「质量」。Threshold luminance to a black-and-white 1-bit image. Settings: Threshold, Format, Quality.
如何使用「位图转 1 位」？How do I use the Convert Bitmap to 1 Bit tool?
在「位图转 1 位」中，选择或拖入文件，按需设置「阈值」、「输出格式」等选项，然后点击每个结果旁的「下载」按钮即可；有多个文件时也可以点「全部下载（ZIP）」一次打包下载。In the Convert Bitmap to 1 Bit: Choose or drop your files, set "Threshold", "Format", then click the Download button next to each result (with several files, "Download all (ZIP)" saves them together).
阈值怎么起作用？How does the threshold work?
每个像素先算亮度，亮度大于或等于阈值的变成白色，否则变成黑色。阈值调高，图里黑色的部分会变多；调低则白色变多。Each pixel's luminance is computed; pixels at or above the threshold become white and the rest black. Raising the threshold makes more of the image black; lowering it makes more white.
有哪些选项可以调整？What options can I adjust?
「位图转 1 位」的设置：「阈值」默认 128，范围 0–255；「输出格式」可选 PNG、JPG、WebP（默认 PNG）；「质量」默认 92，范围 40–100；可选文件：常见图片格式（含 HEIC、HEIF、AVIF、WEBP、BMP、JFIF）。每次生成结果都按当前设置处理。Settings in the Convert Bitmap to 1 Bit — "Threshold" default 128, range 0–255; "Format": PNG, JPG, WebP (default PNG); "Quality" default 92, range 40–100; files: common image formats (including HEIC, HEIF, AVIF, WEBP, BMP, JFIF). The result always uses the current settings.
图片会被上传到服务器吗？Are my images uploaded?
不会。「位图转 1 位」使用浏览器 Canvas 在本地处理图片，处理后的文件直接从你的浏览器下载。No. The Convert Bitmap to 1 Bit processes images locally with the browser Canvas API and the result downloads straight from your browser.
「位图转 1 位」免费吗？需要注册吗？Is the Convert Bitmap to 1 Bit free? Do I need an account?
「位图转 1 位」完全免费，无需注册或安装，打开网页即可使用，手机和电脑都能用；输入的内容只在你的浏览器本地处理。The Convert Bitmap to 1 Bit is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.