PDFTools — Free Online PDF Tools

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PDFTools is a suite of 52 PDF tools that runs entirely in your browser. Unlike typical online PDF services, your documents are processed in local browser memory and never touch a server — there is no upload, no server-side copy, and no account. 38 core tools are free and unlimited: merge, split, compress, OCR, e-sign, watermark, password-protect with AES-256, unlock, rotate, crop, resize, add page numbers, fill forms, flatten, and convert to and from Word, images, CSV and HTML. The flagship feature is the PDF Studio Workspace. Traditional PDF sites force you to upload, download, and re-upload the same file for every single operation. Studio chains them: drop your document once, then reorder and delete pages with visual thumbnails, rotate, stamp a visible e-signature, add a watermark, encrypt, and compress — all in one continuous session, then export once. Premium adds PII Guardian auto-redaction for SSNs, credit cards, emails and phone numbers, plus 1-click workflow recipes and Chat with PDF AI.