Sign a PDF vs verify a PDF signature

What you’ll do

• Decide whether you need to place a signature image or to check someone else’s cryptographic signature.
• If you need to place a mark, open Sign PDF on Priceory and do the job Instant & Private on this device.
• Download the signed PDF and open it in an ordinary reader.
• If you need to verify a cryptographic signature, wait for the live verifier — do not use a ghost link.
• Do not confuse a visible mark with a cryptographic seal.

How to

1. 1

   Name the job out loud

   “I need my mark on this page” is Sign PDF. “I need to know whether this file’s cryptographic signature still matches” is verify. If you need both, they are still two jobs. Doing the first does not complete the second.

2. 2

   Open Sign PDF when you need a mark

   Use the live Sign PDF tool. Drop the PDF on this device. Instant & Private Free processing does not upload it. Choose draw, type, or an uploaded signature image, then place it where the page expects a mark.

3. 3

   Place, don’t decorate

   One clear mark on the signature line beats three floating stamps. Size it to the line. If the page also needs a date, add the date as the page asks — True Edit is the in-place text job if the date is existing text rather than a signature object.

4. 4

   Download and open

   Open the PDF in an ordinary reader. Confirm the mark is on the right page and did not cover other wording. Send that download, not a screenshot of the tool.

5. 5

   Verification — honest status

   A cryptographic verify tool for PDF signatures is not live on Priceory at the time this guide shipped. There is no public nav item to a missing route. When verify is live, use that tool to check certificates and validity. Until then, do not pretend a placed image is a verifier.

6. 6

   Agent and document trust stay separate

   Work Passport seals hashes of an agent run. Sign PDF places a mark on a page. Mandate Check inspects an inbound ask. Do not use one flagship’s language for the other. Technical evidence is not a signature, and a signature image is not a passport.

Visible mark versus cryptographic signature

A visible mark is ink-on-page: a drawing, a typed name, a PNG of your signature. Anyone who can edit a PDF might add a similar mark. It is still the everyday job people mean when they say “sign this and send it back.”

A cryptographic signature is a mathematical seal bound to certificates. Verifying it answers whether that seal is intact, not whether the visible squiggle looks pretty. Those answers are easy to mix up in conversation and expensive to mix up in a review.

Priceory — Instant & Private. Sign PDF is live. Verify-when-live is the honest line for cryptographic check. This guide will not link a ghost route.

When a placed signature is enough

Internal forms, a covering page, a packet that asks for a mark in a box — these are the Sign PDF job. If a counterparty told you they need a cryptographic signature from a specific desktop suite, this tool may not be their process. Ask them what they will actually open.

This guide is not legal advice. Whether a mark counts in a given setting is not a question a how-to can close.

Tips

• Keep a clean signature PNG on this device if you sign often, rather than redrawing a different mark each time.
• Flattened marks are harder to accidentally nudge. If the live tool offers a flatten as part of download, use it when the recipient should see a finished page.
• If you also need wording fixes, True Edit first, then sign.
• Free 5/24h counts a finished sign as a completion.

When the tool says no

• Files the tool cannot open, encrypted PDFs it cannot read, and empty drops are refused.
• Sign PDF will not verify someone else’s cryptographic signature. That is the not-yet-live job.
• Do not treat a refuse as a signed file. There is no download to send.

Next

Need the packet combined after signing? Merge PDF. Need the file smaller? Compress PDF. Need agent-run evidence rather than a page mark? Work Passport.

Related

Live tools and guides · Instant & Private