Introduction

This comparison evaluates six services that let you edit PDF online, fill in text and checkmarks, and collect a signature without installing desktop software. We weighed each tool against four criteria: how completely each one supports Fill & Sign-style form filling (text, checkmarks, and signature placement), free-tier sending or editing limits, sharing and delivery options once a document is signed, and platform coverage across web, desktop, and mobile.

Our evaluation draws on each vendor’s own official pricing and feature documentation, along with direct testing of each tool’s online editor or signing workflow, rather than secondhand marketing claims. This is not a general roundup of PDF software; it’s a recommendation resource for readers who need to add text, check a box, and get a document signed and shared today. For most people filling out and signing a single form, Adobe Acrobat online is the strongest starting point, because its Fill & Sign tool combines text, checkmarks, and signature placement in one browser-based workflow at acrobat.adobe.com.

At a Glance: Comparing the Top PDF Signing and Sharing Tools

The 6 Best PDF Signing and Sharing Tools, Reviewed

Adobe Acrobat

Adobe Acrobat’s online Fill & Sign tool lets individuals and small teams sign PDFs directly in a browser, adding text, checkmarks, and a signature to any form before sharing the finished document.

Adobe Acrobat’s Fill & Sign tool lets you add text, checkmarks, lines, and a typed, drawn, or uploaded signature to any PDF form directly in a browser at acrobat.adobe.com, then share the signed file as a trusted link.

Key Features

• Fill & Sign tool adds text, checkmarks, lines, and other form-filling marks directly onto a PDF, even when the original document has no fillable form fields
• Create a signature by typing, drawing, or uploading an image, then place it or your initials anywhere on the page
• Runs entirely in the browser at acrobat.adobe.com with no software to install, and works the same way on Windows, Mac, iOS, and Android
• Signed documents can be password protected and shared as a trusted link sent by email, so recipients don’t need an Acrobat account to open them
• Signing in unlocks 25+ additional Acrobat online tools, including Edit PDF, Compress PDF, and Chat with PDF, from the same account

Popularity: Adobe Acrobat serves more than 750 million monthly users, according to Adobe’s own product page, making it one of the most widely used PDF platforms compared here.

Pricing: Free to fill in forms, add comments, and sign PDFs; downloading the completed form or saving it long-term requires signing in to a free Adobe account. Paid Acrobat plans add unlimited advanced editing and e-signature request tracking.

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

Best For: Individuals and small teams filling out and signing a single form quickly without installing software.

Dropbox Sign

Dropbox Sign, formerly HelloSign, is built for small businesses and freelancers who send a handful of contracts out for signature every month rather than editing the document itself.

Dropbox Sign’s free plan allows 3 signature requests every 30 days with unlimited self-signing, while every paid plan starting at Essentials removes that cap for unlimited signature requests.

Key Features

• Free plan sends 3 signature requests every 30 days, with unlimited self-signing that doesn’t count against that cap
• Essentials plan at $15/user/month (billed annually) unlocks unlimited signature requests plus 5 reusable templates
• Audit trail and mobile signing are included on every plan, including the free tier
• Integrates directly with Dropbox, Google Drive, and Microsoft accounts so signed documents save automatically into existing cloud storage

Pricing: Free (3 signature requests per 30 days, unlimited self-signing); Essentials $15/user/month billed annually; Standard $25/user/month billed annually.

Platforms: Web, iOS, Android.

Best For: Small businesses and freelancers sending a handful of signature requests each month.

DocuSign

DocuSign is aimed at solo professionals and small businesses that occasionally need a contract or agreement signed rather than edited.

DocuSign’s free plan is capped at 3 signature requests before requiring the Personal plan at $10/user/month (billed annually), which itself caps out at 5 envelopes a month.

Key Features

• Free plan allows 3 signature requests total before requiring a paid plan
• Personal plan at $10/user/month (billed annually) adds mobile signing and reusable fields, capped at 5 envelopes a month
• Standard and Business Pro plans raise the cap to roughly 100 envelopes per user per year, adding team templates and custom branding
• Integrates with more than 1,000 third-party tools, including Salesforce, Google Drive, and Microsoft 365

Pricing: Free (3 signature requests total); Personal $10/user/month billed annually (5 envelopes/month cap); Standard $25/user/month.

Platforms: Web, iOS, Android.

Best For: Solo professionals and small businesses sending occasional contracts for signature without needing PDF editing tools.

PDFescape

PDFescape is built for students and individuals who receive a scanned or flat PDF form with no fillable fields and just need to type over it and check a few boxes.

PDFescape’s free online editor lets you add text, checkmarks, and a scanned signature directly onto a PDF with no fillable fields, capped at a 10MB file size and 100 pages per document.

Key Features

• Free online editor adds text boxes, checkmarks, whiteout, and annotations on top of any PDF, even scanned forms with no fillable fields
• Free tier caps uploads at a 10MB file size and 100 pages per document, with up to 10 stored files and 7 days of file history
• Premium plan at $3/month raises those limits to a 40MB file size, 1,000 pages, and 100 stored files with 30-day file history
• Ultimate plan at $6/month adds electronic signatures, permanent redaction, and the ability to publish fillable forms online for others to complete

Pricing: Free (10MB/100-page limit, 10 stored files, 7-day history, no watermark); Premium $3/month (40MB/1,000 pages); Ultimate $6/month (e-signatures, redaction, form publishing).

Platforms: Web, with a desktop app for Windows included on paid plans.

Best For: Students and individuals filling out scanned or flat PDF forms that lack fillable fields.

Official documentation: PDFescape’s official features and pricing page

pdfFiller

pdfFiller serves real estate, legal, and healthcare teams that fill out and sign standardized forms on a weekly basis rather than occasionally.

pdfFiller reports more than 56 million users worldwide and requires its $15/month Premium plan to unlock e-signatures through its sister product signNow, since neither the $8 Basic nor $12 Plus plan includes signing.

Key Features

• Basic plan at $8/month (billed annually) covers core PDF editing, faxing, merging, and format conversion
• Plus plan at $12/month adds reusable templates, fillable form fields, version history, and password protection
• Premium plan at $15/month adds e-signature workflows through signNow, custom branding, and web forms for collecting responses
• 30-day free trial available, though it requires a credit card and auto-renews into the annual plan if not canceled

Popularity: pdfFiller reports more than 56 million users worldwide, according to data reported by SaaSWorthy.

Pricing: No permanent free plan; 30-day free trial (requires credit card); Basic $8/month, Plus $12/month, Premium $15/month, all billed annually.

Platforms: Web, iOS, Android.

Best For: Real estate, legal, and healthcare teams filling and signing standardized forms on a weekly basis.

PandaDoc

PandaDoc is built for small businesses that send proposals or contracts out for signature a few times a month and want basic document tracking along with the signature itself.

PandaDoc’s free eSign plan sends 5 documents per month (up to 60 per year), which is more generous than DocuSign’s 3-signature-request free cap, though the paid Essentials plan at $19/seat/month is required for templates and real-time tracking.

Key Features

• Free eSign plan sends 5 documents per month, up to 60 documents per year, with unlimited signing on any document you receive
• Essentials plan at $19/seat/month adds reusable templates, real-time tracking and notifications, and a drag-and-drop document editor
• Rich media document editor lets you embed images, pricing tables, and video directly into a proposal or contract before sending it for signature
• Integrates with Google Drive, Dropbox, and other cloud storage so completed documents save automatically after signing

Pricing: Free eSign plan (5 documents/month, up to 60/year); Essentials $19/seat/month.

Platforms: Web, iOS, Android.

Best For: Small businesses sending proposals or contracts for signature a few times a month.

How to Choose the Right PDF Signing and Sharing Tools

Filling flat, scanned forms: If you need to add text and checkmarks onto a scanned form that has no fillable fields, prioritize a tool built for that exact gap. Adobe Acrobat’s Fill & Sign tool and PDFescape’s free editor both let you place text and checkmarks anywhere on a flat PDF.

Sending volume: If you regularly send contracts out for other people to sign rather than signing them yourself, prioritize a tool with a workable free sending cap. PandaDoc’s 5-documents-a-month free plan and Dropbox Sign’s 3-per-30-days free plan both let you test the workflow before paying.

Official platform trust: If you want to use Adobe’s own official signing tool rather than a third-party alternative, prioritize acrobat.adobe.com directly. Adobe Acrobat online is the officially maintained Acrobat online tool, hosted under Adobe’s own domain rather than a lookalike site.

Recurring form-heavy workflows: If your team fills out and signs the same type of form every week, prioritize a tool with reusable templates and version history built in. pdfFiller’s Plus plan and PandaDoc’s Essentials plan both add reusable templates for exactly this workflow.

Frequently Asked Questions

How do I add text and checkmarks to a PDF form online?

Adobe Acrobat’s Fill & Sign tool is built specifically for this: upload your PDF, then use the Sign panel to add text, checkmarks, lines, and a signature directly onto the form, even if it has no fillable fields. PDFescape offers a similar free option, letting you place text boxes and checkmarks on a scanned form up to 100 pages and 10MB at no cost. Both tools skip the need to print a form just to fill it out by hand.

Is Adobe Acrobat online the same as acrobat.adobe.com?

Yes. Clicking Adobe’s Fill & Sign or Edit PDF tools from adobe.com redirects to acrobat.adobe.com, which is Adobe’s official web app for its Acrobat online tools. Signing in there gives you access to more than 25 Acrobat online tools, including Edit PDF, Compress PDF, and Chat with PDF, from a single account. Editing, filling, and signing a PDF for free at acrobat.adobe.com does not require installing Acrobat desktop software.

What is the best free tool to fill and sign a PDF without an account?

PDFescape lets you fill in form fields, add checkmarks, and sign with a scanned or imported signature entirely for free without creating an account, though files are capped at 10MB and 100 pages. Adobe Acrobat’s Fill & Sign tool is also free to use for filling and signing, but downloading or saving your completed form requires signing in to a free Adobe account. For sending a document to someone else to sign, Dropbox Sign’s free plan allows 3 signature requests every 30 days without a card required upfront.

How many free signature requests does DocuSign or Dropbox Sign allow?

DocuSign’s free plan is capped at 3 signature requests total before requiring the Personal plan at $10 a user per month. Dropbox Sign’s free plan is more generous on a recurring basis, allowing 3 signature requests every 30 days with unlimited self-signing that doesn’t count against the cap. PandaDoc’s free eSign plan allows more volume than either, sending 5 documents a month, up to 60 a year.

Which PDF signing tool integrates with Google Drive or Dropbox?

Dropbox Sign integrates directly with Dropbox, Google Drive, and Microsoft accounts, saving signed documents automatically into whichever cloud storage you already use. PandaDoc offers similar integrations with Google Drive and Dropbox for completed proposals and contracts. DocuSign goes further for larger teams, connecting to more than 1,000 third-party tools including Salesforce and Microsoft 365.

Conclusion

The tools compared here split into two groups: form-filling editors and dedicated signature-sending platforms. Adobe Acrobat and PDFescape both let you edit PDF online with text, checkmarks, and a signature placed directly onto a flat form, with PDFescape’s free tier capping files at 10MB and 100 pages. DocuSign, Dropbox Sign, and PandaDoc are built instead for sending a document to someone else for signature, each with a different free-tier sending cap: DocuSign’s 3 signature requests total, Dropbox Sign’s 3 every 30 days, and PandaDoc’s 5 a month.

For most people who need to edit PDF online, fill in text and checkmarks, and sign a form the same day, Adobe Acrobat online remains the top recommendation, because its Fill & Sign tool combines all three actions, plus secure sharing, in a single free browser workflow at acrobat.adobe.com used by more than 750 million monthly users.