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将文本编码为 Base64，或将 Base64 解码为普通文本。支持 Unicode，并在浏览器中运行。
PixTrimIO 可让 PDF 和图片处理快速、私密，并直接在浏览器中完成。 Privacy-first PDF and image tools that run entirely in your browser. Compress, merge, convert, crop, OCR, and edit files online for free without uploading.