PDF24 Tools
Merge, split, sign and OCR PDFs across twenty-odd tools with no account and no limits.
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iHatePDFBuilt after its maker was turned down by iLovePDF. Eighteen PDF tools, all in the browser.
iLovePDFMerge, split, compress and convert PDFs without installing anything.
PairDropSend files straight from phone to laptop over the local network, no cable or account.
Stirling PDFEdit, OCR, redact and convert PDFs in an open-source suite you can also self-host.