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🖋️ Stroke Extraction Threshold:
151
💎 Ink Density Enhancement:
2.1px
Signature & Stamp Transparent PNG
Turn Handwritten Signatures into Crisp, Transparent PNGs
Extract handwritten ink signatures from paper photos into pure transparent PNGs, ready for signing digital documents. Preserves authentic stroke dynamics for signing PDF contracts and invoices.How to Extract a Signature in 3 Steps
Get a clean, transparent signature ready for your documents
01
Upload Photo
Take a clear photo of your handwritten signature on white paper. Upload it directly to Dopic via your browser.
02
Auto-Process
Our AI instantly detects the ink, removes the paper background, eliminates shadows/creases, and isolates the signature.
03
Download PNG
Preview the result and download your crisp, transparent Alpha PNG. Drag and drop it directly into your PDF or Word doc.
Top Real-World Uses for Clean Signatures
Streamline your workflow with professional-grade signature assets
PDF Contract Signing
Insert flawless signatures into digital agreements without the messy scan look. Perfect for freelancers, landlords, and small businesses finalising deals remotely.
Corporate Onboarding
Speed up HR paperwork by providing employees with a clean, reusable signature asset. Eliminates the need to re-sign every single document manually.
E-commerce Invoices
Add authentic, hand-drawn signatures to invoices, receipts, and packing slips on Shopify or WooCommerce. Builds trust and adds a personal touch to B2B sales.
Property & Lease Agreements
Landlords and letting agents can quickly process tenant signatures for tenancy agreements, ensuring they look sharp when pasted into Word or PDF templates.
Freelance Proposals
Make your quotes and project proposals look bespoke and professional. Paste your signature directly onto digital offers to close clients faster.
Delivery & Proof of Service
Capture customer sign-offs for deliveries or service calls. Extract the signature from a phone photo to create a clean digital record for your business files.
Why Professionals Choose Dopic
Built for speed, quality, and absolute privacy
100% In-Browser Privacy
Your documents never leave your device. All processing happens locally in your browser, ensuring sensitive contract data remains private.
Instant High-Contrast Output
AI-powered edge detection removes noise, creases, and shadows instantly, delivering a crisp black-on-transparent PNG in seconds.
No Watermarks, No Limits
Download your extracted signatures in full resolution without any branding or watermarks. Free to use for unlimited personal and commercial projects.
Works on Any Device
Optimised for mobile cameras and desktop browsers alike. Take a photo on your iPhone or Android and finish the edit on your laptop.
100% FREE
Professional handwritten signature extraction tool for UK businesses and freelancers. Create transparent PNGs from paper photos instantly.
Frequently Asked Questions
Everything you need to know about extracting signatures
Is my signature data stored on Dopic servers?
No. Dopic processes all images entirely within your web browser using client-side technology. Your photos and extracted signatures are never uploaded to our servers, ensuring maximum privacy for your legal documents.
Does this work with low-quality smartphone photos?
Yes. Our algorithm is designed to handle common issues like slight blur, uneven lighting, and paper creases. For best results, ensure the signature is well-lit and the contrast between ink and paper is clear.
Can I use these signatures for legal contracts in the UK?
Absolutely. The resulting transparent PNGs are standard digital assets used widely in e-signature workflows. They are compatible with Adobe Acrobat, Microsoft Word, and major UK-based e-sign platforms.
Will there be a watermark on my downloaded file?
Never. Dopic provides clean, professional outputs without any watermarks, logos, or branding. You own the rights to use the extracted signature for your business needs.
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