Compare

Honest comparisons.
No bashing.

DocuSign and Adobe Sign sell a hosted agreement platform. FreeSign is a free e-signature primitive — on free-sign.com or embedded in your product — built around one guarantee nobody else matches: your PDF never uploads to us. Here's the picture, side by side.

The whole market, in one table

The 30+ services that show up for “free e-signature” fall into three groups — and none of them does what the first column does. Two of those groups are worth comparing on capability; the third — placeholders and ad pages — doesn't actually try to sign anything, so we leave it out of the table.

• Enterprise eSign — DocuSign, Adobe Acrobat Sign, OneSpan: real products, hosted document vaults, workflow is the point.
• Free PDF / eSign tools — the freemium “sign PDF” services: upload your file, paste a signature image, cap the free tier at a few documents a month.

FreeSign is the only signing service — the household names included — that never receives your document. That is the first row of the table below: the one line where every other column says “Yes”.

What Adobe's yellow warning actually means

You may have read that a FreeSign PDF shows a yellow warning in Adobe Reader. So does the signed output of plenty of paid e-signature tools. Here is the part that matters: a yellow warning means there is a real cryptographic signature, and Adobe verified its integrity and signing time — it simply doesn't recognise the issuing CA from its commercial trust list (AATL).

The free output of most “sign PDF” tools shows no signature panel at all, because there is no cryptographic signature — only a drawn image. Enterprise green and FreeSign yellow are the same cryptographic substance; the only difference is trust-list membership, which our 2.0 AATL CA closes. Yellow-with-a-real-signature beats an image that was never a signature to begin with. The FAQ unpacks the yellow warning in full.

Pick the comparison that fits

Why these two first?

DocuSign and Adobe Acrobat Sign are the two e-signature names enterprise procurement teams ask about first; if you're evaluating FreeSign, odds are one of them is on the other side of the spreadsheet. We picked them because the differences are structural, not cosmetic — this isn't “ours is cheaper.”

• They upload your PDF. FreeSign does not. That's a different category of product, not a different feature.
• They store your PDF in their cloud, indefinitely (subject to retention settings). FreeSign has nothing to store.
• They rely on Adobe's curated trust list to show a green check. FreeSign relies on your own copy of the file plus free public tools, which gives the same proof without needing anyone's blessing. The yellow Adobe warning you might see is about trust-list membership, not the document's integrity. See the FAQ explainer.

What they host vs. what we sign

FreeSign is not a document editor. We don't build documents, forms, or templates, and we don't host collaboration or redlining on the file — that is deliberate, not a missing feature. You prepare the document in whatever you already use, and FreeSign does one thing: turn the finished PDF into verifiable proof that it was signed. DocuSign and Adobe Sign are the right call when you want their whole product: an editor and form builder, envelopes in their cloud, their routing UI, their audit dashboards. We're honest about the gap — and about what changes when you bring your own orchestration:

• Hosted multi-party workflow (routing, reminders, approval chains). That's their core SKU. FreeSign returns a PAdES-signed PDF per ceremony. A second signer, a vendor queue, or thousands of NDAs through your portal: your CRM, email, or iframe embed triggers each signing step — we don't store the PDF or run their envelope UI.
• Turnkey Salesforce, HubSpot, SAP, Workday apps. They ship certified marketplace connectors. FreeSign ships REST, MCP, Agent Skill, and embed so you wire signing into the stack you already run — retention, branding, and identity stay on your side.
• Template libraries, branded sender pages, reminder dashboards. They host the project-management layer around the signature. With embed, your app can fire the same ceremony for every vendor NDA at whatever scale your backend supports; we add the cryptographic seal, not the status board.
• FreeSign user accounts, SSO, and SCIM. There is no FreeSign login by design — fewer places your contract can leak. When you embed, SSO is your parent-page session; the iframe runs under the gate you already built.

What we compete on

• Privacy. Your PDF stays in your browser (or parent ↔ iframe in embed). Our servers only see a short fingerprint of the file — never the content.
• Scale without their cloud. One signature on free-sign.com, or thousands of ceremonies driven by your app via freesign-embed.js and the API — same rule every time: the contract bytes never transit FreeSign infrastructure.
• Anyone can verify it — without us. Adobe Reader opens it. Free public tools verify it. No FreeSign account, no API key, no call back to our servers.
• Vendor-shutdown survival. FreeSign could disappear tomorrow and your signed PDF still works. The certificate, the trusted timestamp, and the independent public-ledger proof all live inside the file or on infrastructure that doesn't depend on us.
• Price. Free today, no account, no card. Not a trial. There is no paid tier yet; a Pro tier is on the roadmap and will not retroactively change the free product.
• Embed in your product. Banks, insurers, HR tools, and vertical SaaS mount the same ceremony in their own UI; enterprise suites still upload every PDF to their cloud. Integration guide · FAQ.