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Inside Nutrient

A guide to the invisible work behind documents Introducing Nutrient Documents for Salesforce: Native document generation and signing Document AI vs. traditional OCR: Choosing between OCR, AI, and hybrid pipelines PDF SDK compliance and security evaluation checklist for enterprise teams (2026) Invariant Corp replaces paper processes with Nutrient Workflow and scales without limits What is process mapping? A complete guide Nutrient vs. Conga Composer for Salesforce document generation (2026) Document routing: How to automate document distribution The CTO’s AI playbook: Why accountability architecture beats orchestration Compliance workflow automation: Why built-in compliance is table stakes Workflow diagrams: Examples, symbols, and how to build one that actually runs Digital forms: Replace paper forms with automated workflows Approval workflow software: How to automate approvals Why document-centric automation is different The CEO’s AI playbook: Why decision architecture beats model selection Nutrient SDK product updates for Q1 2026 PDF redaction verification: How to prove sensitive data is permanently removed What is a VPAT? The complete guide to accessibility conformance reports What is PDF/UA? The accessible PDF standard explained Salesforce eSignatures: Generate, sign, and track documents in one flow Online document viewer: Options, tradeoffs, and how to embed one Document viewer for web apps: React, Vue, Angular (2026) Best document viewers in 2026: A buyer’s guide How to edit a PDF in Python: Add text, images, and annotations Nutrient advances Workflow platform with agentic AI for enterprise-grade speed and consistency in document-heavy operations How to create a Salesforce quote template from opportunity data The business case for accessibility: Five ways it drives enterprise value Python PDF library comparison (2026): 7 libraries for developers Why your AI agent hallucinates PDF table data PDF.js limitations: When to upgrade to a commercial PDF SDK
Nutrient 13.3: LTV for digital signatures
Stefan Kieleithner · 2024-01-24 · via Inside Nutrient

Table of contents

    We’re excited to announce the release of Nutrient iOS SDK 13.3. This release adds support for visionOS, long-term validation (LTV) support for advanced digital signatures, and privacy manifests in our frameworks.

    Nutrient visionOS SDK

    In this release, we’re adding support for visionOS. Visit our introducing Nutrient visionOS SDK blog post for more details.

    Long-term validation for digital signatures

    Following our improvements for advanced digital signatures in Nutrient iOS SDK 13.2, we’re adding support for long-term validation (LTV) in our 13.3 release.

    More specifically, there’s a new API to sign documents with internationally recognized PAdES level B-LT digital signatures. PAdES level B-LT builds upon the B-T (timestamping) level by adding revocation data to signatures. This revocation information makes signatures verifiable over a long period of time.

    LTV information can be added while signing a document, or to an existing digital signature at some point after the signature was created.

    In addition to LTV support, we’re also allowing verification of the certificates used for signing by checking their online revocation status. This is now done automatically in the validation UI, and it can also be done programmatically.

    For more information, see our digital signatures guide. Refer to the LongTermValidationExample(opens in a new tab), LongTermValidationAfterSigningExample(opens in a new tab), and DigitalSignatureConfigurationExample(opens in a new tab) examples in our Catalog example app(opens in a new tab) repository to see these new features in action and learn more about how to use the API.

    Privacy manifests

    In line with Apple’s upcoming App Store requirements(opens in a new tab), we’ve added privacy manifest(opens in a new tab) files recording the required reasons APIs are used by all our frameworks. These manifests will make it easy for you to create a privacy report for your app. Rest assured that Nutrient doesn’t collect any user data, and all APIs mentioned in the privacy manifest files are used for functionality of devices.

    Other improvements

    We also added support for modifying the border dash style, line start and end type, and line end color properties with the annotation inspector for measurements. Additionally, there’s a new API for using regular expressions when searching text in a document. For a complete list of changes, check out the Nutrient iOS SDK 13.3 changelog.

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