--- title: "Best TypeScript PDF signature library" canonical_url: "https://www.nutrient.io/guides/web/signatures/typescript/" md_url: "https://www.nutrient.io/guides/web/signatures/typescript.md" last_updated: "2026-11-11T08:45:22.013Z" description: "Digitally sign PDFs easily with our TypeScript SDK. Create, validate, and store signatures securely in your web applications." --- # Sign PDFs with our TypeScript SDK Nutrient Web SDK is a powerful JavaScript library designed for signing PDF documents with electronic signatures, encrypted certificate-based digital signatures, or a combination of both. It’s fully compatible with TypeScript, and the library provides developers with an easy-to-use API to create, validate, and display digitally signed documents. Additionally, it features a sleek and customizable user interface (UI) for capturing hand-drawn electronic signatures, making it an ideal solution for any TypeScript-based web application for seamless PDF digital signature integration. [Launch demo](https://www.nutrient.io/demo/signatures) ## Key capabilities - **Create digital signatures** — Digitally sign PDF documents using a private key for secure certificate-based authentication. - **Validate digital signatures** — Verify the integrity of certificates and signatures, ensuring compliance and authenticity. - **eSignatures** — Easily add hand-drawn, scanned, or typed electronic signatures to PDFs for a seamless signing experience. - **Signature storage** — Store signatures locally or remotely to enable quick reuse for future PDF signing tasks. - **Events handling** — Trigger workflows or automate processes upon signature actions for efficient document management. - **Customizable UI** — Personalize the signing interface by hiding buttons, adjusting the design, and matching your application’s look and feel. - **Client-side functionality** — Sign PDFs directly in the browser without requiring server-side processing, ensuring quick and private execution. - **Extendable features** — Enhance functionality by adding forms, annotations, editing tools, and more to your PDF signing process. ## Guides for signatures **[Introduction to signatures](https://www.nutrient.io/guides/web/signatures/overview.md)** Discover the basics of PDF signatures, including their purpose and how they enhance document security. **[Add an ink electronic signature](https://www.nutrient.io/guides/web/signatures/adding-an-electronic-signature.md)** Learn how to add hand-drawn, scanned, or typed electronic signatures (eSignatures) to PDF documents effortlessly. **[Electronic signature storage](https://www.nutrient.io/guides/web/signatures/signature-storage.md)** Explore how to implement a robust mechanism for storing electronic signatures locally or remotely for future reuse. **[Digital signatures lifecycle](https://www.nutrient.io/guides/web/signatures/digital-signatures/signature-lifecycle/signature-lifecycle-overview.md)** Master the process of adding digital signatures to PDFs, including timestamping, validation, and lifecycle management. **[Supported digital signature methods](https://www.nutrient.io/guides/web/digital-signatures/introduction-to-digital-signatures.md)** Understand the various digital signing methods and algorithms supported by the library for secure PDF authentication. **[Electronically sign with a certificate](https://www.nutrient.io/guides/web/signatures/using-electronic-signatures-and-digital-signatures-together.md)** Learn how to combine electronic signatures with encrypted, certificate-based digital signatures for enhanced security and flexibility. **[Fill and sign forms](https://www.nutrient.io/guides/web/signatures/fill-and-sign-forms.md)** Discover how to programmatically or manually fill out and sign PDF forms for a comprehensive signing solution. **Call to Action** Start your free trial for unlimited access and expert support. [Learn More](https://www.nutrient.io/sdk/web/getting-started/other-frameworks/javascript.md) ## FAQs #### What types of signatures can I add to a PDF with this library? You can add electronic signatures, encrypted certificate-based digital signatures, or a combination of both, for comprehensive signing capabilities. #### Can I validate signatures within my app? Absolutely! Nutrient Web SDK allows you to validate certificates and signatures directly within your app for enhanced security. #### Is server-side processing required for signing PDFs? No, all signing processes are fully client-side, allowing you to sign PDFs directly in the browser without needing server-side processing. #### Can I store electronic signatures for reuse? Yes, you can store electronic signatures either locally or remotely, making it easy to reuse them for future PDF signing tasks. #### Is the signature UI customizable? Yes, the signature UI is fully customizable, allowing you to seamlessly adjust it to match your application’s design, workflow, and branding. --- ## Related pages - [JavaScript PDF signature library](/guides/web/signatures.md) - [Create and manage PDF signatures effortlessly](/guides/web/signatures/angular.md) - [Seamlessly sign PDFs with ASP.NET's digital signature library](/guides/web/signatures/aspnet.md) - [Create and validate digital signatures in Blazor](/guides/web/signatures/blazor.md) - [Fill and sign PDF forms using JavaScript](/guides/web/signatures/fill-and-sign-forms.md) - [Headless PDF digital signing](/guides/web/signatures/headless.md) - [Sign PDF documents with HTML5 digital signature integration](/guides/web/signatures/html5.md) - [Sign PDFs with a jQuery library](/guides/web/signatures/jquery.md) - [Sign PDF documents with Laravel digital signature integration](/guides/web/signatures/laravel.md) - [Sign PDFs with Next.js digital signatures](/guides/web/signatures/nextjs.md) - [Sign PDFs with our Nuxt.js digital signature library](/guides/web/signatures/nuxtjs.md) - [Understand digital and electronic signatures](/guides/web/signatures/overview.md) - [Securely sign PDF documents with advanced technology](/guides/web/signatures/php.md) - [Integrate digital signatures in React apps](/guides/web/signatures/react.md) - [Sign PDFs with our Svelte SDK](/guides/web/signatures/svelte.md) - [Create and validate PDF signatures in Vue.js](/guides/web/signatures/vuejs.md)