Adobe Fill & Sign is a perfectly serviceable signing flow buried inside Acrobat and Acrobat Online. Most people only meet it when they need to sign a school form or a contractor agreement.
If you do not want to live inside Adobe to do that, the alternatives are good.
What Fill & Sign does well
It is integrated into Acrobat, supports text fields and signature stamping, and remembers your saved signature. For Adobe users, the friction is low.
Where Flint fits
Flint's sign-pdf flow does the same job in any browser without an Adobe account. Type, draw or upload a signature, place it on the page, save the file. If you also need to fill text fields, the same editor handles it. No upsell wall.
Other honest options
Smallpdf and Sejda both have free signing flows with daily caps. DocuSign is the heavyweight for multi-party signing with audit trails — overkill for a school form, perfect for property contracts. Pick by signature complexity.
Best for…
Flint for fast personal signing without an account. DocuSign for legally heavy multi-party. Smallpdf/Sejda if you already use them and the daily cap is enough. Fill & Sign if you are already in Acrobat.
FAQ
Are these signatures legal?
In most jurisdictions, electronic signatures are legally binding for everyday contracts. For heavily regulated documents check local rules.
Can I save a signature for next time?
Flint lets you save a signature when you sign in, so you do not redraw it every contract.
Does the signed PDF still open in Acrobat?
Yes. The output is a standard PDF.
If you only need to fill and sign, do not pay for a whole Acrobat plan. Sign a PDF in Flint and get on with the rest of the day.