CalcBrew

PDF Tools

Sign PDF

Sign contracts and forms without printing. Draw with your finger or mouse, type your name in a signature font, or upload a photo of your signature, then drop it where it belongs.

Runs in your browser — files never leave your device.

Drop PDF file here

or click to browse · paste from clipboard · up to 100 MB

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About Sign PDF

Print-sign-scan produces a blurry page and takes ten minutes. Placing a signature image directly on the PDF keeps the document sharp and takes seconds, and for most everyday agreements an image signature is legally sufficient.

The signature and any dates or initials are embedded into the page content, so they appear in every viewer and in print. Your signature image is stored only in your browser if you choose to remember it.

How it works

  1. Drop PDF file onto the box above, click it to browse, or paste from the clipboard.
  2. Check the file list; remove anything you added by mistake.
  3. Press Convert. The work happens on your device, so speed depends on your computer or phone.
  4. Download the result.

About the format

PDF · Portable Document Format · .pdf

The fixed-layout document standard: looks the same on every device and printer, which is why forms, invoices, contracts and reports are shared as PDF.

  • A PDF can contain vector text, embedded fonts, images, form fields, annotations and digital signatures.
  • Scanned PDFs are just pictures of pages; they need OCR before the text can be searched or copied.
  • PDF is an open ISO standard (ISO 32000) since 2008.

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Frequently asked questions