Free, no account
Free tools for PDF and electronic signatures
Check, convert, preserve for the long term. No account and nothing to install, right in your browser. Your files are deleted once they are processed.
Free tools, no account needed
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Free, no account
Check a signature
Check whether the electronic signature in a PDF is valid and which level it has.
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Check PDF/A
Check whether a PDF meets the PDF/A archiving standard, and see what is missing.
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Make signatures verifiable for the long term
Adds the evidence to signed PDFs that keeps a signature verifiable for years.
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Free, no account
Convert to PDF/A
Converts Word, Excel and PowerPoint files and existing PDFs into archive-ready PDF/A.