CoonTool PDF is a free PDF editor that runs in any web browser, with more than fifty separate tools. You can reorder and delete pages, merge several documents into one, split a long file into parts, shrink an oversized PDF, run OCR over a scan, convert to and from Word, images, HTML and Markdown, add passwords and signatures, and redact text permanently. Nothing needs to be installed and there is no account to create.
No. Every tool on the site works without signing in, and there is no usage counter or daily limit on how many files you can process.
No. Files come back exactly as the tool produced them, with no added branding, banner page or watermark.
No fixed upload cap is configured, so the practical limits are your own connection speed and the time the operation takes. Very large scans passed through OCR are the slowest case by a wide margin.
Yes. A file you have uploaded stays in the workbench between tools, so you can compress it, then add page numbers, then password protect it without downloading and re-uploading in between.
Files are uploaded over an encrypted connection and processed on CoonTool's own server, not in your browser. The working copy is deleted automatically once the job is done, and in any case within 24 hours. Nothing is stored permanently and no account is required.