[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"page:\u002Fpdf-compress":3},{"id":4,"slug":5,"kind":6,"componentKey":7,"title":8,"keywords":9,"description":10,"robots":11,"cateId":12,"orderIdx":13,"logo":14,"updatedTime":15,"guide":16,"faq":17,"status":18,"tool":19,"related":26,"platform":51,"shortDesc":51,"longDesc":51,"images":52,"downloadUrl":51,"samePlatform":51,"onlineAlternatives":51,"shareRecommend":53},74,"\u002Fpdf-compress","tool","PdfCompress\u002FPdfCompress","PDF压缩在线免费缩小体积","pdf压缩,pdf压缩在线,pdf压缩免费,pdf文件大小压缩,压缩pdf,pdf减小体积,pdf在线压缩工具,pdf压缩到指定大小,扫描件压缩,pdf压缩图片,pdf怎么压缩大小","在线压缩 PDF 体积：扫描件、照片和图文混排的 PDF 通过图像重压与长边限制通常能省一半以上，标准与强压两档可选，一次可处理十份，结果三十分钟后自动删除，发邮件、传系统不再超限。","index,follow",7,0,"\u002Ftool-icons\u002Fpdf-compress.svg","2026-10-24 20:25:53","PDF 压缩主要压的是文件里的图像：扫描页、照片、图文混排的页面把内嵌图像重新编码并限制长边，通常能省一半以上体积；文字、页面尺寸与版面原样保留，不会把文字重新排或转成图。\r\n怎么用：① 拖入需要变小的 PDF（一次最多十份、单份不超过五十兆）；② 选压缩强度，标准档兼顾清晰度、适合邮件与系统上传限制，强压档更小但细节损失明显；③ 点开始压缩，逐份查看压缩前后体积与节省比例，单个下载或打包下载全部。\r\n参数与边界：纯文本类文件里没有可重压的图像，结果会几乎不变甚至原样返回，页面会诚实提示已接近最小，这不是失败；带透明通道的图像为保护效果不参与重压；加密 PDF 无法压缩；服务端排队，文件多时需要等待。\r\n典型场景：扫描件超出邮箱附件上限、报名与申报系统限制单文件大小、把一批合同压小后归档、图文报告压小发给客户、手机拍的证明材料合成一份又要控制体积、把旧档案缩到能塞进网盘免费额度。\r\n注意事项：文件需上传服务器处理，结果三十分钟后自动删除，涉及内部资料请先确认单位规定；压缩不可逆，重要文件请另存原件；只按页拆分或提取几页请用 PDF 拆分页。","[{\"question\":\"为什么我的 PDF 压完没变小？\",\"answer\":\"这类文件里几乎没有可重压的图像（多为纯文本或图像已被高度压缩），继续压只会损失质量，所以工具直接返回原文件并提示已接近最小，属于正常结果。\"},{\"question\":\"标准档和强压档怎么选？\",\"answer\":\"先试标准档（图像质量约六十、长边不超过 1600 像素），日常邮件与系统上传限制够用；还需要更小再换强压档，代价是细线条和小字明显变糊，打印用途建议保留标准档。\"},{\"question\":\"压缩会丢文字或排版吗？\",\"answer\":\"不会。工具只替换文件里内嵌的图像对象，页面尺寸、文字与版面完全不动，页数也不会变。\"},{\"question\":\"文件安全吗？要上传吗？\",\"answer\":\"需要上传。图像重编码依赖服务端 PDF 引擎，浏览器做不到同等规模。文件只用于本次压缩，结果保留三十分钟后自动删除，本站不做长期留存与二次使用。\"},{\"question\":\"一次能压多少份？有大小限制吗？\",\"answer\":\"一次最多十份、单份不超过五十兆。带打开密码的加密 PDF 无法处理，请先解除密码；扫描件如果方向不对，可先用 PDF 旋转页转正再压。\"}]",1,{"id":20,"title":21,"desc":22,"logo":14,"url":5,"cateId":12,"cate":23,"cateSlug":24,"type":25,"orderIdx":13},54,"PDF 压缩","在线压缩 PDF 体积，扫描件与图文型 PDF 经图像重压通常能省一半以上，标准与强压两档，结果 30 分钟后自动删除。","文档与格式转换","document-convert","router",[27,33,39,45],{"id":28,"title":29,"desc":30,"logo":31,"url":32,"cateId":12,"cate":23,"cateSlug":24,"type":25,"orderIdx":13},39,"在线图片格式转换","在线图片格式转换为大家提供在线图片转格式功能，不需要安装软件，一键完成jpg, png, webp, gif, bmp, tiff, svg等图片格式在线转换，是一款操作简单使用方便的在线图片格式转换工具！","https:\u002F\u002Fwww.qiguangit.com\u002Ftools-admin\u002Ffile\u002Ffile\u002Fimage_convert.png","\u002FimageConvert",{"id":34,"title":35,"desc":36,"logo":37,"url":38,"cateId":12,"cate":23,"cateSlug":24,"type":25,"orderIdx":13},43,"OFD格式转换","免费在线OFD转换工具，简便快捷，无需下载安装。轻松转换OFD文件至通用的PDF、HTML格式，方便共享与打印。","https:\u002F\u002Fwww.qiguangit.com\u002Ftools-admin\u002Ffile\u002Ffile\u002Fofd.png","\u002Fconvert-ofd",{"id":40,"title":41,"desc":42,"logo":43,"url":44,"cateId":12,"cate":23,"cateSlug":24,"type":25,"orderIdx":13},44,"在线Office转换PDF","免费在线Office转换工具，简便快捷，无需下载安装。轻松转换Word、Excel、PPT文件至通用的PDF格式，方便共享与打印。","https:\u002F\u002Fwww.qiguangit.com\u002Ftools-admin\u002Ffile\u002Ffile\u002Foffice.png","\u002Fconvert-office2pdf",{"id":46,"title":47,"desc":48,"logo":49,"url":50,"cateId":12,"cate":23,"cateSlug":24,"type":25,"orderIdx":13},45,"实用工具","精心整合多款高效实用工具，全面兼容多个主流平台，助力用户在工作与生活中实现流程优化、效率提升，轻松应对各种任务与挑战。","https:\u002F\u002Fwww.qiguangit.com\u002Ftools-admin\u002Ffile\u002Ffile\u002Futility_share.png","\u002Fshare",null,"",[]]