只需几步即可压缩、合并、保护和编辑PDF文件。
压缩PDF
在不损失可读性的情况下将PDF大小减少多达80%。
合并PDF
在几秒内将多个PDF文件合并为一个文档。
拆分PDF
按页面范围将PDF拆分为多个文件。
旋转
将PDF页面旋转90°、180°或270°。
整理 PDF
重新排序、删除或移动PDF中的页面。
提取页面
将PDF中的特定页面提取到新文件中。
水印
为PDF的每一页添加文字或图片水印。
页码
自动为您的PDF文档添加页码。
图像 → PDF
将JPG、PNG或WebP图片转换为PDF文件。
转换器
轻松将Word、Excel、PowerPoint、ODT转换为PDF。
解锁
从受保护的PDF中删除密码，以便自由打开它。
保护 PDF
使用AES 256位加密密码保护您的PDF。
OCR PDF识别
使扫描的PDF或图片完全可搜索和复制。
签署 PDF
为任何PDF文档添加电子签名。
PDF → EPUB
将PDF转换为EPUB或MOBI，适用于电子阅读器。
AI 摘要
获取任何长PDF文档的AI摘要。
Free online PDF tools — no signup, no limits
FileSwiftly packs 16 free PDF utilities in a single page: compress, merge, split, rotate, organize, extract pages, watermark, number, convert, OCR, unlock, protect, sign, and more. Everything runs server-side with Ghostscript and Poppler for professional output quality, yet nothing requires registration. Files are processed over HTTPS and automatically deleted one hour after upload.
Why professionals choose FileSwiftly for PDFs
Privacy first
Your documents never leave our secure server for more than an hour. No email required, no tracking, no resale.
Built for speed
Server-side PDF toolchain (Ghostscript, QPDF, pdfcpu) finishes most jobs in under 10 seconds, even on mobile.
Batch-ready
Merge unlimited files, split by ranges, OCR multi-page scans. Free tier already handles 100 MB per file.
AI-powered extras
Summarize a 100-page PDF in seconds, extract keywords, ask questions with our PDF Q&A tool.
PDF tools — frequently asked questions
Are FileSwiftly PDF tools really free?
Yes — every PDF tool is 100% free, without signup, watermark, or hidden quota. We cover infrastructure costs through modest, non-intrusive ads.
How do you compress PDFs without losing quality?
We expose three Ghostscript presets (screen / ebook / printer) based on DPI. The "ebook" preset reduces file size by up to 90% while keeping text vector and images sharp at normal reading distance.
Is it safe to upload confidential PDFs?
Files are uploaded over TLS, stored on an isolated server partition, and wiped automatically after 1 hour. No human reviews your file; no third party accesses it.
Can I use these tools on mobile?
Absolutely. Every tool is mobile-first and works in any modern browser (iOS Safari, Chrome on Android, Firefox, Edge). No app install required.
Do I need Adobe Acrobat or any desktop software?
No. FileSwiftly replaces the everyday features of Acrobat, Foxit, or Smallpdf Pro without any download, license, or subscription.