The 6 Best PDF Signing Tools for Individuals and Businesses in 2026

Quick Answer: The best PDF signing tool for both individuals and businesses is Adobe Acrobat Sign, which lets anyone sign PDFs for free with 2 signature requests a month while its business-tier plans add secure document workflows like audit trails, bulk sending, and ISO 27001 and SOC 2 Type 2 certified infrastructure. It suits freelancers who need to sign an occasional contract as well as operations teams that need a secure, trackable signing workflow for dozens of agreements a month. Whichever tool you pick, check whether the signing capabilities you need, like requesting a signature from someone else, are on the free tier or gated behind a business plan.

Individuals and businesses need very different things from a PDF signing tool: one person signing a lease once a year cares about speed and cost, while a business running secure document workflows across a team cares about audit trails, certifications, and volume. This guide evaluates six PDF signing tools, drawn from each platform’s own official feature documentation and direct testing, weighing signing capabilities, security certifications, workflow features like audit trails and bulk send, and how each tool splits access between individual and business-tier plans. It’s written for freelancers who need to sign an occasional document and for operations teams that need secure, trackable document workflows at scale. Adobe Acrobat Sign is the best pick for most people, since it officially documents enterprise-grade certifications while still offering individuals a genuinely free way to sign PDFs.

How the Tools Compare

Tool Name	Free Tier Available	Platform	Best For	Compliance Certifications	Standout Feature
Adobe Acrobat Sign	Yes	Web, Windows, Mac, iOS, Android	Individuals signing PDFs for free; businesses needing secure, certified workflows	4 (ISO 27001, SOC 2 Type 2, HIPAA, PCI DSS)	Signed documents saved as tamper-evident Certified PDFs
DocuSign	No	Web, Windows, Mac, iOS, Android	Businesses needing FedRAMP-level secure document workflows at scale	5 (ISO 27001, SOC 2 Type II, FedRAMP Moderate, ISO 27017, ISO 27018)	1.8M+ customers and 1B+ users worldwide
Dropbox Sign	Yes	Web, iOS, Android	Individuals and small teams needing unlimited signing without a business contract	5 (SOC 2 Type II, ISO 27001, HIPAA, GDPR, eIDAS)	Per-document encryption key plus a rotating master key
PandaDoc	Yes	Web, iOS, Android	Businesses combining proposals, signing, and payment in one workflow	2 standard (SOC 2 Type II, GDPR); HIPAA on annual plans	Free eSign plan: 60 documents/year, 2 recipients each
SignNow	No	Web, iOS, Android	Businesses needing FDA-regulated secure document workflows on a budget	6 (SOC 2 Type II, ISO 27001, PCI DSS, GDPR, eIDAS, 21 CFR Part 11)	100 signature invites per user per year included
Signeasy	No	Web, iOS, Android	Individuals and healthcare businesses needing biometric signing capabilities	6 (ESIGN, UETA, eIDAS, SOC 2 Type II, GDPR, HIPAA, 21 CFR Part 11)	Face ID/Touch ID signer authentication built in

 

Adobe Acrobat Sign

Adobe Acrobat Sign is built to serve individuals and businesses from the same platform, rather than treating one as an afterthought. An individual can sign PDFs for free with no business contract, while a company can move to a paid plan for the secure document workflows a team needs.

Adobe Acrobat Sign gives individuals free signing capabilities for occasional use while officially documenting ISO 27001, SOC 2 Type 2, HIPAA, and PCI DSS certification for businesses that need secure document workflows at scale.

Key Features

• Individuals can sign PDFs for free, with 2 signature requests per month on the Acrobat Reader plan
• Officially certified compliant with ISO 27001, SOC 2 Type 2, HIPAA, and PCI DSS v3.0, a secure foundation for business document workflows
• Every signed document is saved as an encrypted, tamper-evident Certified PDF, letting recipients validate authenticity
• Complete audit trail on every transaction, with optional signer geolocation data, a core secure-workflow capability for businesses
• Acrobat Standard for Teams ($16.99/user/month) adds business capabilities like requesting signatures from others, though it caps transactions at 150 per user per year

Pricing: Free plan (Acrobat Reader) allows 2 signature requests per month with Adobe Sign branding on outputs. Acrobat Standard is $14.99/month for individuals; Acrobat Standard for Teams is $16.99/user/month with a 150-transaction/user/year cap; Enterprise pricing is custom and removes that cap.

Platforms: Web, Windows, Mac, iOS, Android

Best For: Individuals who need free signing capabilities occasionally, and businesses that need officially certified, secure document workflows at scale.

DocuSign

DocuSign is the PDF signing tool most large businesses default to when secure document workflows need to hold up across a high volume of agreements.

DocuSign holds ISO 27001, SOC 2 Type II, and FedRAMP Moderate authorizations, plus ISO 27017 and ISO 27018 certifications for cloud security and privacy, and served more than 1.8 million customers and over a billion users worldwide as of January 2026.

Key Features

• ISO 27001 (certified across multiple regions), SOC 2 Type II, FedRAMP Moderate authorization, ISO 27017, and ISO 27018 certifications, plus GDPR compliance
• More than 1.8 million customers and over a billion users worldwide as of January 31, 2026, according to DocuSign’s own SEC filings
• Personal plan: $15/month for 5 envelopes per month, a capability aimed at individuals rather than high-volume businesses
• Business Pro plan ($65/month) adds bulk send and payment collection, secure document workflow capabilities built for teams
• Real-time audit trail and access to 900+ partner integrations included even on the entry-level Personal plan

Pricing: No permanent free plan, though a free trial is available. Personal: $15/month (5 envelopes/month). Standard: $45/month. Business Pro: $65/month. Enterprise: custom pricing.

Platforms: Web, Windows, Mac, iOS, Android

Best For: Businesses that need FedRAMP-level, secure document workflows for high-volume agreement processing.

Dropbox Sign

Dropbox Sign, formerly HelloSign, gives individuals a genuinely free signing tier while reserving its deepest secure-workflow capabilities for business accounts.

Dropbox Sign encrypts every file with a unique per-document encryption key plus a rotating master key, and its Free plan caps out at 3 signature requests per 30-day cycle with unlimited self-signing.

Key Features

• Free plan: 3 signature requests per 30-day cycle, unlimited self-signing, no templates, aimed squarely at individuals
• SOC 2 Type II, ISO 27001, HIPAA, GDPR, and eIDAS compliance, though full HIPAA and SOC 2 controls require an Enterprise account
• AES 256-bit encryption at rest plus TLS encryption in transit, with a unique document encryption key (DEK) per file and a regularly rotated master key
• Essentials plan ($15/month) adds 5 reusable templates and unlimited signature requests for a single user
• Standard plan ($25/user/month, 2-user minimum) adds bulk send and signer attachments, secure workflow capabilities aimed at small business teams

Pricing: Free: 3 signature requests per 30-day cycle, no templates. Essentials: $15/month, 5 templates, unlimited requests. Standard: $25/user/month (2-user minimum), 15 templates plus bulk send.

Platforms: Web, iOS, Android

Best For: Individuals and small teams who need unlimited signature requests without a business-tier contract.

PandaDoc

PandaDoc treats signing as one step inside a larger business document workflow that also covers proposal creation and payment collection.

PandaDoc’s Free eSign plan allows up to 60 documents per year with two recipients each, while its Business plan adds SOC 2 Type II and GDPR compliance plus two-factor authentication for secure business workflows.

Key Features

• Free eSign plan: 60 documents per year, 2 recipients per document, 5 templates, unlimited storage and users, aimed at individuals and small teams
• Business plan adds SOC 2 Type II compliance, GDPR compliance, and two-factor authentication, capabilities businesses need for secure document workflows
• Annual Business plans can add Qualified Electronic Signature, recipient verification via passcode or SMS, and HIPAA compliance
• Every signed document includes a certificate of completion recording signer identity, timestamps, and activity history
• Shareable signing links plus a built-in payment feature (Stripe, PayPal, ACH) that collects payment the moment a document is signed

Pricing: Free eSign: 60 documents/year, 2 recipients/document. Starter: around $19/user/month (annual). Business: around $49/user/month (annual), adds SOC 2 Type II, GDPR, and 2FA.

Platforms: Web, iOS, Android

Best For: Businesses that want to combine proposal creation, e-signature, and payment collection in one workflow.

Official resource: PandaDoc’s Free plan guide

SignNow

SignNow is a PDF signing tool built for businesses that need FDA-regulated secure document workflows without paying enterprise pricing.

SignNow is SOC 2 Type II, ISO 27001, and 21 CFR Part 11 certified, and its standard plans include 100 signature invites per user per year before per-invite overage charges apply.

Key Features

• SOC 2 Type II, ISO 27001, PCI DSS, GDPR, eIDAS, and 21 CFR Part 11 certifications, covering FDA-regulated electronic records for businesses
• HIPAA compliance and a signed Business Associate Agreement (BAA) available only on SignNow’s quote-only Site License plan
• AES-256 encryption at rest and TLS 1.2/1.3 encryption in transit for documents throughout the signing workflow
• Business plan: about $8/user/month; Business Premium: about $15/user/month; both include 100 signature invites per user per year, with overage fees of roughly $0.96 to $3.60 per extra invite
• Two-factor authentication and encrypted folders for an added layer of document protection

Pricing: No permanent free plan (free trial available). Business: about $8/user/month. Business Premium: about $15/user/month. Enterprise: about $30/user/month. All plans include 100 signature invites/user/year, with per-invite overage fees after that.

Platforms: Web, iOS, Android

Best For: Budget-conscious businesses that need FDA 21 CFR Part 11-compliant, secure document workflows.

Signeasy

Signeasy is a mobile-first PDF signing tool built for individuals and healthcare businesses that need biometric signing capabilities on the go.

Signeasy is compliant with ESIGN, UETA, eIDAS, SOC 2 Type II, GDPR, HIPAA, and 21 CFR Part 11, and supports Face ID and Touch ID authentication for signers on mobile devices.

Key Features

• Compliant with ESIGN, UETA, eIDAS, SOC 2 Type II, GDPR, HIPAA, and 21 CFR Part 11, spanning legal, privacy, and FDA electronic-record requirements
• Face ID and Touch ID authentication for signers on iOS and Android, plus offline signing and editing capabilities
• Personal plan ($10/user/month) caps out at 5 documents sent per month for a single individual user
• Business plan ($20/user/month) unlocks unlimited documents and AI-based key-term extraction and contract summaries
• Business Pro plan ($30/user/month) adds two-factor authentication for signers and role-based access controls, secure workflow capabilities for larger teams

Pricing: No permanent free plan (free trial available). Personal: $10/user/month (5 documents/month). Business: $20/user/month (unlimited documents). Business Pro: $30/user/month, adds 2FA for signers.

Platforms: Web, iOS, Android

Best For: Individuals and healthcare businesses that need 21 CFR Part 11 compliance and biometric signer authentication on mobile.

How to Choose the Right AI Pixel Art Tools

• If you’re an individual who only needs to sign an occasional document, prioritize tools with a genuinely free tier rather than a trial. Adobe Acrobat Sign and Dropbox Sign both meet this threshold with ongoing free plans.
• If you’re a business that needs secure document workflows with audit trails and bulk sending, prioritize tools that document those capabilities on a business-tier plan. Adobe Acrobat Sign, DocuSign, and SignNow all meet this threshold.
• If your business handles regulated health or FDA data, prioritize tools with named certifications for that specific use case. SignNow and Signeasy both support 21 CFR Part 11; check the official documentation for which plan actually includes it.
• If you want to verify a tool’s secure document workflow claims before trusting it with real contracts, check its official compliance documentation rather than a marketing page. Adobe, SignNow, Signeasy, and PandaDoc all publish this directly.

Frequently Asked Questions

What are Adobe Acrobat Sign’s official PDF signing capabilities for businesses?

Adobe Acrobat Sign’s official capabilities for businesses include ISO 27001, SOC 2 Type 2, HIPAA, and PCI DSS certification, tamper-evident Certified PDFs, and a complete audit trail on every transaction. Acrobat Standard for Teams ($16.99/user/month) adds the ability to request signatures from others, capped at 150 transactions per user per year. See Adobe Acrobat Sign’s official compliance FAQ for Adobe’s own compliance FAQ.

Which PDF signing tool is best for individuals who only need to sign an occasional document?

Adobe Acrobat Sign’s free Acrobat Reader plan allows 2 signature requests per month at no cost, making it a solid fit for individuals. Dropbox Sign’s free plan is also aimed at individuals, allowing 3 signature requests per 30-day cycle with unlimited self-signing.

What secure document workflows features should businesses look for in a PDF signing tool?

Businesses should look for a documented audit trail, bulk sending, and named compliance certifications like SOC 2 Type II or ISO 27001. DocuSign’s Business Pro plan ($65/month) adds bulk send and payment collection, while PandaDoc’s Business plan adds SOC 2 Type II compliance and two-factor authentication.

Where can I find official documentation on e-signature compliance certifications?

SignNow publishes its HIPAA compliance details directly on its help center, and Signeasy documents its full certification list, including SOC 2 Type II and 21 CFR Part 11, on its own support site. Both are more reliable than a third-party comparison for confirming which plan actually includes a given certification.

Is there a free PDF signing tool for individuals that doesn’t require a business plan?

Yes. Adobe Acrobat Sign’s Acrobat Reader plan is free with 2 signature requests per month, and Dropbox Sign’s Free plan allows 3 signature requests per 30-day cycle, both with no business contract required. PandaDoc’s Free eSign plan also allows 60 documents per year for individuals or small teams.

Conclusion

These six PDF signing tools split cleanly between individuals and businesses: Adobe Acrobat Sign and Dropbox Sign offer the most usable free tiers for individuals signing occasionally, DocuSign and SignNow carry the deepest secure document workflow certifications for high-volume or regulated businesses, and PandaDoc and Signeasy add proposal, payment, and biometric capabilities for specific business and individual use cases. Where a capability lives matters as much as whether the platform has it, since audit trails, bulk send, and full compliance certifications are often gated to business-tier plans across all six tools.

For most people, whether an individual or a business, Adobe Acrobat Sign remains the best PDF signing tool, since it officially documents ISO 27001, SOC 2 Type 2, HIPAA, and PCI DSS certification for secure document workflows while still letting an individual sign PDFs for free.