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SignFlow

Sign PDFs directly in your browser without uploading to third parties. Get client contracts and proposals signed in minutes while keeping your documents completely private.

ZEZeroqode·0 remixes

Designed for

  • Service business owners & solo founders
  • Signing NDAs and client agreements in-browser
  • Managing contract workflows with data privacy
  • Consultants handling day-to-day document signing

Key highlights

  • In-browser processing
  • Freehand signature drawing
  • Multi-page PDF support
  • Precise placement controls
  • Instant PDF download
  • Reusable signatures
  • Session persistence
  • Drag-and-drop upload

Technology stack

Frontend

  • React
  • TypeScript
  • Tailwind CSS
  • Recharts

UI Components

  • shadcn/ui

Other

  • React PDF
  • Embla Carousel
  • React Draggable
  • React Dropzone

Deployment

  • Lovable
  • GitHub

About this template

This template gives you a PDF signature tool that works entirely in your browser on desktop (signature drawing requires a mouse, so mobile devices aren't supported) and you don't need technical skills to set it up. Your documents never leave your computer—everything happens in your browser, which means your contracts, proposals, and agreements stay private.

The technical parts are already handled—you don't have to figure out how PDFs work in browsers or build signing interfaces from scratch. The template stays out of your way and lets you focus on getting documents signed. You can use it immediately or customize basic branding elements if needed. The tool is ready to use right out of the box.

This works for anyone who regularly signs business documents and wants to avoid privacy concerns with third-party signature platforms. The tool handles multiple signature placements per document, supports multi-page PDFs, enables freehand signature drawing with undo capability, and outputs professional signed files ready to send.

Best Use Cases

Sign and Secure Your Documents

Sign any PDF document without sending files to third-party platforms. The professional interface keeps everything on your device under your control, which matters when handling sensitive documents. Documents stay private—your data never touches external servers.

Client Proposals and Service Agreements

Sign client proposals and service agreements during discovery calls or negotiations without delays. When clients request contract modifications, make changes and sign immediately—no waiting for external platforms to process. This streamlined approach helps you close deals faster while maintaining a professional appearance.

Internal Business Documents

Sign internal agreements, contractor paperwork, and vendor contracts without sending sensitive business information to third-party platforms. All processing happens in your browser—no files leave your device, giving you complete control over sensitive documents. This provides control over document handling and data privacy for business documents that require signatures.

Quick Turnaround Signing

Sign documents between meetings without waiting for email attachments to process through external services. Upload the PDF, draw your signature once (you can reuse it on any page), drag it into position on the page, and optionally resize it using the corner handle if needed. Download the signed version instantly. The streamlined workflow—from upload to placement to download—eliminates the friction of traditional signing processes.

Getting Started

Step 1: Remix This Template

Click "Remix" to create your copy. You'll have a complete PDF signature tool ready to use. All the features are already working—upload, signature drawing, placement, and download. You don't need to know code to start using it.

Step 2: Customize Your Brand (Optional)

SignFlow uses a clean, professional design with a green accent color for buttons and a system font optimized for readability. If you want to match your business colors, Lovable's visual editor lets you adjust the color scheme and spacing. You don't need to know code to make it look how you want.

Step 3: Use the Signature Tool

Upload any PDF document using drag-and-drop or the file picker. Draw your signature once on the canvas—you can reuse it throughout the document. Drag your signature to any position on any page, resize it using the corner handles, and download your signed PDF instantly. The tool includes zoom controls for precise placement and undo functionality if you make a mistake.

Step 4: Share With Your Team (Optional)

Since this tool runs entirely in your browser, you can share it with team members by giving them access to your Lovable project. They can use the same remix and sign documents on their own computers—everything stays client-side, so each person's documents remain on their device only.

Conclusion

This PDF signature tool works for business owners who want document signing without privacy compromises. You get professional functionality without enterprise platform complexity, complete in-browser processing without sending documents to third parties, and production-ready signing capability without building technical infrastructure yourself.

The tool handles the complete signing workflow smoothly. Upload PDFs with drag-and-drop, draw signatures with freehand precision, place them exactly where needed with zoom controls, and download professionally signed documents. Everything runs in your browser for instant results. Whether you're signing your first client contract or processing agreements weekly, this tool gives you a professional signing solution that keeps your documents under your control.

Features & capabilities

  • Drag-and-Drop Upload

    Upload any PDF with simple drag-and-drop or file picker—no complicated steps or file size restrictions to slow you down.

  • Freehand Signature Drawing

    Draw natural signatures with your mouse on an HTML5 canvas, with undo history so mistakes are easily corrected.

  • Multi-Page PDF Support

    View and sign documents of any length with vertical page layout—place signatures on any page throughout the document.

  • Precise Signature Placement

    Drag signatures exactly where needed with zoom controls for accuracy, plus resize handles to fit any signature field.

  • Reusable Signatures

    Draw your signature once and place it multiple times across any page—saved in your browser session for convenience.

  • Instant PDF Download

    Download professionally signed documents immediately—no processing delays, no email verification, no waiting.

  • Session Persistence

    Your PDF and signature stay available if you refresh the page, so you won't lose work during the signing process.

  • In-Browser Processing

    All PDF rendering and signature embedding happens locally in your browser—complete privacy without external dependencies.

  • Clean Professional Interface

    Intuitive design with clear step-by-step instructions, so you can sign documents confidently without technical knowledge.

  • Signature Management Controls

    Undo individual placements or clear all signatures to start fresh—flexible editing before final download.