文件与媒体
PDF 压缩器
免费的 PDF 压缩器。重新编码嵌入图像并去除元数据以减小 PDF 大小。完全在您的浏览器中运行——您的文件绝不会被上传。
Runs in your browser
PDF files
编辑注
Understanding · A page tree, with strings attached.
本深度章节目前仅有英文版本。上方的转换工具支持您的语言;长篇说明文章尚未翻译。
常见问题
Quick answers.
›How much smaller will my PDF get?
Image-heavy PDFs can shrink 30-70%. Text-only PDFs (already compressed) shrink less — typically 5-15%.
›Are my PDFs uploaded?
No — compression happens entirely in your browser.
›Will quality suffer?
Slightly for image-heavy PDFs (re-encoded at high quality). Text and vector content is preserved exactly.
›Is the compressor free?
Yes — fully free, no signup, no file size limits beyond browser memory.
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