Draw or Type It
Create your signature by drawing with mouse or touch, typing in one of 50+ handwriting fonts, or uploading an existing signature image.
写真署名
写真に署名を追加
Sign a scanned document, a photo of a contract page, a certificate, or any image — upload it, place your signature, and download the signed result. 100% private, free, and no watermark.
Place It Exactly
Drag your signature anywhere on the photo, resize it from the corners, and rotate it until it lines up perfectly.
Stays on Your Device
Your photo and signature are processed entirely in your browser — nothing is uploaded, stored, or shared with any server.
Legal & privacy
Is this signature legally valid?
Signing a photo or scan carries the same legal weight as signing a PDF — the format changes, but the intent to sign does not.
United States
ESIGN Act (2000) & UETA
European Union
eIDAS (2014)
United Kingdom
Electronic Communications Act 2000
Worldwide
Recognised in most jurisdictions
Where a signature may not be enough. A small number of documents still require a handwritten signature or notarisation — wills and testamentary documents, some court filings, and certain government or immigration forms. If you are signing something in that category, check the receiving party’s requirements first. For contracts, agreements, invoices, NDAs, offer letters, leases, and everyday paperwork, a simple electronic signature is the standard.
Common uses
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Signed scans & photocopies
Add a signature to a scanned form when all you have to hand is a photo of it.
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Releases & permissions
Sign model or photo releases for shoots and events.
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Certificates
Place your signature on a certificate image before sending it on.
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Approvals
Mark up a photo proof with a signature to approve it.
Your files stay yours. Everything is processed in your browser. Your signature image and any document you sign are never uploaded, stored, or shared on our servers, and they are gone the moment you close the tab.
FAQ
写真への署名：よくある質問
使用できる画像形式は？
JPG、PNG、その他の一般的な画像形式に対応。署名済み画像は同じ形式でダウンロードされます。
配置後に署名サイズを変更できますか？
はい、角をドラッグしてリサイズし、回転ボタンで署名の角度を調整。
写真はサーバーにアップロードされますか？
いいえ、すべての編集はブラウザ内で行われます。写真がデバイスを離れることはありません。
How to Add a Signature to Any Photo or Image
Not every document you need to sign is a PDF. Sometimes you need to add your signature to a scanned document image, a photo of a contract page, a certificate, or even a screenshot. Our photo signing tool lets you place your signature on any image format — JPG, PNG, or WebP — and download the result as a clean, signed image.
Common use cases for signing photos
- Scanned documents: Many offices still scan contracts and forms as image files rather than PDFs. You can sign these directly without converting to PDF first.
- Receipts and invoices: Freelancers and small business owners sometimes need to approve receipts or invoices by adding a signature to a photo.
- Certificates and awards: Schools, organizations, and companies often issue certificates as image files that need official signatures.
- Photo identification documents: Some processes require signing a photo of an ID or passport page for verification purposes.
- Social media and marketing: Adding a personal signature overlay to marketing images, portfolio pieces, or social media graphics.
Tips for a clean result
The key to a professional-looking signed photo is matching your signature size and placement to the document. A signature that's too large looks sloppy, while one that's too small is hard to read. Start by placing your signature on the designated signature area, then resize it so it spans roughly 30-40% of the signature line width. Slight rotation (2-5 degrees) adds a natural, hand-signed feel.
For scanned documents with visible signature lines, place your signature just above or on the line. For photos without a designated area, bottom-right corner or lower third works well. Always use a transparent PNG signature so it layers cleanly without a white box.