en.sotool.top is a free online PDF processing platform offering 20+ tools including merge, split, compress, rotate, watermark, format conversion, and more. All processing happens directly in your browser using JavaScript — your files never leave your device. No software installation required, no signup needed.
Free online PDF merger with drag-and-drop file ordering. Combine multiple PDFs into one file quickly. Browser-based processing, no server upload. Perfect for combining scanned contracts, reports, and scattered documents.
Free online PDF splitter supporting page range extraction and per-page splitting. Precisely extract the pages you need. Extract chapters, remove unwanted pages, or split large files into smaller ones.
Free online PDF compressor with adjustable compression strength. Reduce file size while maintaining clarity. Ideal for email attachments, cloud storage uploads, and platform file size requirements.
Free online PDF rotation tool supporting 90°, 180°, and 270° rotations without quality loss. Correct scanner orientation errors and fix upside-down phone scans.
Free online PDF watermark tool with customizable text watermarks. Adjust transparency, angle, and position. Useful for declaring document ownership, marking draft previews, and internal file classification.
Free online PDF to image converter supporting PNG and JPEG formats with adjustable DPI. Choose from 150/200/300 DPI for different use cases: screen viewing, presentations, or web display.
Free online image to PDF converter supporting JPG, PNG, and more. Adjust page orientation and margins. Perfect for archiving phone photos of contracts, creating PDF photo albums, or delivering design drafts.
Free online Word to PDF converter with no Office installation required. Browser-based conversion preserves original document formatting. Supports preview before export.
Free online Excel to PDF converter supporting multiple worksheet selection and table pagination optimization. Ideal for financial reports, data archiving, and fixed-format display.
Free online PDF encryption tool supporting open passwords and permission passwords. Protect sensitive documents from unauthorized access and restrict printing, copying, and editing.
Free online PDF decryption tool to remove known open passwords or permission restrictions. Useful when you forget your own password or need to remove unnecessary restrictions.
Free online tool to precisely delete unwanted pages from PDF files. Remove covers, blank pages, or error pages with ease.
Free online PDF page numbering tool with customizable position, format, and starting page. Perfect for theses, contracts, and formal documents.
Free online batch PDF rotation tool. Process multiple files at once, unify page orientation, and download as a ZIP package.
Free online batch PDF compression tool. Reduce multiple file sizes at once with adjustable compression strength.
Free online batch PDF watermark tool. Add text watermarks to multiple files simultaneously with custom styling.
All file processing is done locally in your browser. Files are never uploaded to any server. The platform uses pure frontend technology, operating on PDF files directly with JavaScript — your files never leave your computer. Suitable for handling contracts, financial reports, and other sensitive documents.
en.sotool.top is a browser-based online PDF processing platform dedicated to providing secure, convenient, and free PDF solutions. No software installation required — open the website and start using all features immediately.
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