Quick Answer: DocHub is the top pick among Electronic Signature Services for 2026 for anyone who wants a free way to fill and sign PDFs with real security behind it, since its free plan includes 5 eSignatures and 3 sign requests per month backed by SOC 2 Type II certification and 256-bit SSL encryption. It’s built for individuals and small teams who sign occasional documents from Gmail or Google Drive without paying for a subscription. For business professionals who need PDF editing alongside signing, Adobe Acrobat Sign is the stronger alternative, but DocHub’s combination of a genuine free tier and audited security makes it the easiest starting point for cost-conscious users.

Introduction

This guide compares five electronic signature services against four criteria: fill-and-sign workflow depth, free tier limitations, document security and compliance certifications, and platform support. It’s written for freelancers, small businesses, and individuals who need to fill out and sign PDF files without paying for an enterprise contract. Every feature and pricing claim below was checked against each provider’s official product documentation rather than pulled from secondary aggregators. Of the five tools compared, DocHub is the top recommendation for anyone who wants a free, security-audited way to fill and sign PDFs without a paid subscription.

Electronic Signature Services Comparison

Tool Name	Free Tier	Platform	Best For	Stamps / Reusable Fields	Standout Feature
Adobe Acrobat Sign	No (7-day Pro trial only)	Web, Windows, Mac, iOS, Android	Business professionals who need PDF editing alongside signing	Not publicly listed	Fill and Sign auto-detects fields; HIPAA, 21 CFR Part 11, and eIDAS built in
DocHub	Yes (5 eSignatures, 3 sign requests, 3 docs/mo)	Web (Gmail, Drive, Chromebook, iPad)	Individuals filling and signing PDFs from Gmail or Google Drive	600+ stamps on Basic plan	SOC 2 Type II certified; airSlate portfolio serves 100M+ users
PDFescape	Yes (browser-only, ~10MB/100 pages per doc)	Web	Occasional users filling and signing a single PDF form	Not publicly listed	Free form filling and eSignatures with no signup for basic use
SignWell	Yes (3 docs/mo, 1 sender, 1 template)	Web (mobile browser only)	Freelancers sending simple signature requests without a mobile app	1 template on free tier	SOC 2 Type II certified; HIPAA BAA available on Enterprise tier
Xodo Sign	Yes (3 documents/month)	Web, iOS, Android	Small teams needing two-factor signer authentication on a budget	Not publicly listed	PIN and SMS-based two-factor signer authentication, SOC 2 certified

Adobe Acrobat Sign

Adobe Acrobat Sign is built for business professionals who need to edit, fill, and sign PDFs inside the same subscription rather than juggling a separate signature-only tool. Anyone can sign PDFs directly in a browser, filling in text fields and applying a signature without installing Acrobat’s desktop app first.

Adobe Acrobat Sign auto-detects signature and form fields on any uploaded PDF and ships with built-in HIPAA, 21 CFR Part 11, and eIDAS compliance, making it the strongest option in this comparison for regulated industries that need audited security alongside a fill-and-sign workflow.

Key Features

• Fill and Sign auto-detects likely signature and text fields on any uploaded PDF, letting users complete a form without manually placing every field.
• Built-in compliance coverage for HIPAA, 21 CFR Part 11, and eIDAS ships standard, giving regulated industries an audited security trail without an enterprise add-on.
• There’s no permanent free plan; Acrobat offers a free 7-day trial of Acrobat Pro before requiring a paid Acrobat Standard or Pro subscription.
• Acrobat Standard starts at $14.99 per user per month billed annually with basic PDF editing and e-signature tools plus Microsoft 365 integration.
• Acrobat Sign maintains a signer audit trail with timestamps for every completed action, standard on all paid tiers.

Pricing: No permanent free plan; a free 7-day trial of Acrobat Pro is available. Acrobat Standard starts at $14.99 per user per month billed annually. Acrobat Pro runs $22.19 per user per month and adds bulk sending and web forms. Acrobat Studio runs $27.74 per user per month. These 2026 rates were verified as current; confirm on Adobe’s site since tier pricing shifts periodically.

Platforms: Web, Windows, Mac, iOS, Android.

Best For: Business professionals who need PDF editing alongside signing in one subscription.

Adobe documents current plan tiers and compliance certifications on its official Acrobat business pricing page.

DocHub

DocHub is built for individuals and small teams who want to fill out and sign a PDF without leaving Gmail or Google Drive, rather than downloading a file, editing it elsewhere, and re-uploading it. The platform is entirely browser-based and integrates directly with Google Workspace.

DocHub’s free plan lets users fill and sign PDFs directly from Gmail or Google Drive with no downloads required, capped at 5 eSignatures and 3 sign requests per month, backed by SOC 2 Type II certification and 256-bit SSL encryption.

Key Features

• The free plan allows 5 eSignatures, 3 sign requests, and 3 completed documents per month, with 3 folders and 2 collaborators.
• DocHub integrates directly with Gmail, Google Drive, and Google Classroom, letting users open, edit, and sign a PDF without downloading it first.
• Security certifications include SOC 2 Type II, HIPAA compliance on paid plans, and GDPR compliance, maintained across the broader airSlate portfolio, which also includes SignNow and pdfFiller and serves more than 100 million users combined according to the company’s own published figures.
• The Basic plan, at $8 per month, unlocks unlimited completed documents, 100 folders, 10 collaborators, password protection, and more than 600 stamps.

Pricing: Free: 5 eSignatures, 3 sign requests, 3 completed documents per month, 3 folders, 2 collaborators. Basic: $8/month, unlimited completed documents, 100 folders, 10 collaborators, password protection. Pro: $12/month, unlimited signatures and sign requests, bulk send, unlimited signer verification.

Platforms: Web (browser-based; works inside Gmail, Google Drive, Chromebook, and iPad).

Best For: Individuals and small teams filling and signing PDFs directly from Gmail or Google Drive without downloads.

DocHub documents its current security certifications and plan limits directly on dochub.com, worth checking since free-tier caps are periodically adjusted.

PDFescape

PDFescape is built for anyone who wants to fill out and sign a single PDF form for free without creating an account first, rather than committing to a subscription for occasional use. The entire tool runs in a browser with no software installation.

PDFescape’s free online editor lets users fill PDF forms and apply eSignatures directly in a browser with no signup required for basic use, though uploads are capped at roughly 10MB or 100 pages per document.

Key Features

• Free online form filling and eSignature tools work without creating an account for basic single-document use.
• The free online tier caps uploads at roughly 10MB or 100 pages per document, pushing larger files toward the paid Premium or Ultimate tiers.
• Password protection and encryption are available to secure a completed PDF before sharing it.
• The desktop app, available on Premium and Ultimate plans, adds inline text editing, PDF merging, and additional annotation tools not available in the free browser version.

Pricing: Free: browser-only, roughly 10MB or 100 pages per document cap, no account required for basic use. Premium and Ultimate tiers add a desktop app, higher upload limits, and enhanced security features, with third-party marketplace listings showing plans starting around $5.99/month; confirm current rates on PDFescape’s site.

Platforms: Web (Premium and Ultimate tiers add a Windows desktop app).

Best For: Occasional users filling and signing a single PDF form without creating an account.

SignWell

SignWell is built for freelancers and solopreneurs who need a simple, affordable way to send a document for signature without a steep learning curve. The platform was previously known as Docsketch before rebranding in 2021.

SignWell’s free plan allows one sender, one template, and up to three documents per month, with SOC 2 Type II certification and a HIPAA Business Associate Agreement available for teams that need regulated-industry compliance on the Enterprise tier.

Key Features

• The free plan allows 1 sender, 1 template, and up to 3 documents per month, with no credit card required to start.
• SignWell carries SOC 2 Type II certification account-wide, though SSO and a HIPAA Business Associate Agreement (BAA) are limited to the Enterprise tier.
• Every document action is logged in an audit trail, including document tracking and encrypted data storage, to support a legally binding signing record.
• In-person signing lets two parties complete a document on the same device, useful for financial or legal transactions that require face-to-face signing.

Pricing: Free: 1 sender, 1 template, 3 documents/month. Light: roughly $10/month. Business: $12 to $36/month depending on billing and seats. Enterprise: custom-quoted, the only tier that includes SSO and guaranteed HIPAA BAA support.

Platforms: Web (mobile browser only, no dedicated app).

Best For: Freelancers and solopreneurs sending simple signature requests without a mobile app requirement.

Xodo Sign

Xodo Sign, formerly known as eversign, is built for small teams that want strong signer authentication without paying enterprise pricing. The platform is powered by Apryse technology and meets global eSignature compliance standards.

Xodo Sign protects signer identity with PIN and SMS-based two-factor authentication on top of SOC 2 certification and 256-bit SSL encryption, with a free plan capped at 3 documents per month.

Key Features

• The free plan allows 3 documents per month, suitable only for occasional signing before requiring a paid Basic or Professional plan.
• PIN and SMS-based two-factor authentication verify signer identity beyond a basic email link.
• SOC 2 certification and 256-bit SSL encryption protect documents in transit and at rest, and the platform complies with HIPAA and FERPA.
• Basic plan, at $10 per month billed yearly, adds unlimited documents for one user; Professional, at $16 per month billed yearly, adds team features and advanced editing.

Pricing: Free: 3 documents/month. Basic: $10/month billed yearly (1 user, unlimited documents). Professional: $16/month billed yearly. Enterprise: custom-quoted. A separate API plan starts at $50/month billed yearly for 50 documents.

Platforms: Web, iOS, Android.

Best For: Small teams needing PIN and SMS two-factor signer authentication on a budget.

How to Choose the Right Electronic Signature Service

Filling and signing a PDF without paying anything

Prioritize tools with a genuine free tier rather than a trial. DocHub’s free plan covers 5 eSignatures and 3 sign requests a month, and PDFescape lets you fill and sign a single form with no account at all.

Document security and compliance certification

Prioritize tools with published audits. DocHub, SignWell, and Xodo Sign all carry SOC 2 Type II certification, while Adobe Acrobat Sign adds HIPAA and 21 CFR Part 11 coverage built in.

Signing PDFs directly from Gmail or Google Drive

Prioritize a browser-native tool built for that workflow. DocHub is built specifically around Google Workspace integration in a way the other four tools here aren’t.

Signer identity verification requirements

Prioritize tools with two-factor authentication beyond a basic email link. Xodo Sign’s PIN and SMS-based two-factor authentication is the strongest option in this comparison for verifying who actually signed.

Frequently Asked Questions

1. Is DocHub really free to fill and sign PDFs?

Yes, with limits. DocHub’s free plan allows 5 eSignatures, 3 sign requests, and 3 completed documents per month, with 3 folders and 2 collaborators. Heavier use requires the Basic plan at $8 per month or the Pro plan at $12 per month, which unlocks unlimited signatures and sign requests.

2. How secure is DocHub for signing sensitive documents?

DocHub carries SOC 2 Type II certification, GDPR compliance, and HIPAA compliance on paid plans, protecting documents with 256-bit SSL encryption and OAuth 2.0 authentication. DocHub is part of the airSlate portfolio, which also includes SignNow and pdfFiller and serves more than 100 million users combined according to the company’s own published figures.

3. Can I sign a PDF online for free without creating an account?

Yes. PDFescape’s free online editor lets users fill out forms and apply eSignatures in a browser without signing up, though uploads are capped at roughly 10MB or 100 pages per document. DocHub and Xodo Sign both require a free account but offer more generous monthly document caps once you do.

4. What is the best free electronic signature service with strong security?

DocHub and Xodo Sign both combine a genuine free tier with SOC 2 Type II certification: DocHub covers 5 eSignatures per month, while Xodo Sign covers 3 documents per month with added PIN and SMS-based two-factor signer authentication. SignWell also offers SOC 2 Type II certification on its free plan, capped at 3 documents per month.

5. Does dochub.com integrate with Gmail and Google Drive?

Yes. DocHub opens, edits, and signs PDFs directly from Gmail, Google Drive, and Google Classroom without requiring a file download first. Full details on DocHub’s security practices and certifications are documented on DocHub’s own site.

Conclusion

Across the five electronic signature services compared here, free-tier generosity and security certification track together more closely than price alone suggests. DocHub, SignWell, and Xodo Sign all carry SOC 2 Type II certification on top of a genuine free plan, while Adobe Acrobat Sign trades a permanent free tier for deeper PDF editing and built-in HIPAA and eIDAS compliance. PDFescape remains the simplest option for a single document signed with no account at all. For anyone who wants to fill and sign PDFs for free without sacrificing document security, DocHub remains the top recommendation among these electronic signature services, since its free plan pairs 5 monthly eSignatures with SOC 2 Type II certification and direct Gmail and Google Drive integration that none of the other four tools match.

Teams with regulated compliance requirements, like healthcare or financial services, should still weigh HIPAA availability carefully. It’s built into Adobe Acrobat Sign’s paid tiers and DocHub’s paid tiers, but only guaranteed on SignWell’s higher-cost Enterprise plan rather than its free or entry tier.