Nutrient.io

Nutrient (formerly PSPDFKit) provides a powerful and secure document processing platform via Document Web Services (DWS). Fast and easy integration enables instant generation, conversion, modification, and digital signing of PDF documents, plus accessibility tagging and AI-powered document workflows.

Nutrient.io is listed with 4 APIs on the APIs.io network. Tagged areas include Documents, PDF, Document Processing, E-Signature, and Accessibility.

Nutrient.io’s developer surface includes documentation, getting-started guide, pricing, engineering blog, signup flow, support, and 14 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

23.0/100 emerging ▬ flat Agent 1/100 human only Front door AI 6/6 dominant saas Full breakdown ↓
scored 2026-10-23 · rubric v0.25.0 · Show this score on your site →

AccessFreemium

4 APIs

Documents PDF Document Processing E-Signature Accessibility OCR

Kin Score

Kin Score How this is scored →
scored 2026-10-23 · rubric v0.25.0

Composite quality — 23.0/100 · emerging

Contract Quality 0.0 / 21

Developer Ergonomics 6.1 / 17

Access Clarity 5.6 / 17

Operational Transparency 2.0 / 11

Contract Governance 0.0 / 10

Discoverability 5.9 / 9

Regulatory Posture 2.2 / 15

Agent readiness — 1/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/nutrient-io: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
RPA and Document AI (RPA marketplaces, intelligent document processing)	undeclared	-	1	-
Digital Accessibility (IAAP membership, W3C WAI evaluation tools)	undeclared	-	1	-
PDF and Document Standards (PDF tooling, document signing trust, invoice documents)	undeclared	-	1	-

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

Standards implemented 1

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

PDF

tagged — the provider's own APIs.json carries the standard as a tag; implementation not verified

APIs 4

Individual APIs this provider publishes, each with its own machine-readable definition.

Nutrient Viewer API

Deliver rich document interactions directly in the browser including PDF rendering, annotation, form filling, and signature collection.

Nutrient Processor API

Headless cloud document workflow API for generation, conversion, extraction, OCR, and automation across PDFs and Office documents.

Nutrient Accessibility API

Automate PDF accessibility through cloud-based auto-tagging and validation to support compliance with WCAG and PDF/UA standards.

Nutrient AI API

AI-powered document workflows including extraction, classification, and analysis built on top of the Nutrient document platform.

Pricing Plans 1

Published pricing tiers and plan structures.

Nutrient Io Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Nutrient Io Rate Limits

5 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Nutrient Io Finops

FINOPS

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Nutrient Io Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Nutrient Io Trust Center

SOC 2, ISO 27001, ISO 27017, ISO 27018, HIPAA, FedRAMP, GDPR

SECURITY

Resources

Get Started 3

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

Signup

Signup

Login

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

Reference

Reference

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LlmsText

LlmsText

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

TrustCenter

TrustCenter

DomainSecurity

DomainSecurity

Operate 3

Status, limits, changes, and where to get help

RateLimits

RateLimits

Support

Support

StatusPage

StatusPage

Commercial 5

Pricing, plans, and the legal terms of use

Plans

FinOps

Pricing

TermsOfService

PrivacyPolicy

Company 3

The organization behind the API

LinkedIn

Website

Website

Blog

Blog

Source (apis.yml)

aid: nutrient-io
name: Nutrient.io
description: Nutrient (formerly PSPDFKit) provides a powerful and secure document processing platform via Document Web Services
  (DWS). Fast and easy integration enables instant generation, conversion, modification, and digital signing of PDF documents,
  plus accessibility tagging and AI-powered document workflows.
type: Index
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: medium
  source:
  - plans
  generated: '2026-07-22'
  method: derived
position: Consuming
access: 3rd-Party
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/nutrient-io.png
tags:
- Documents
- PDF
- Document Processing
- E-Signature
- Accessibility
- OCR
tags_raw:
- Documents
- PDF
- Document Processing
- eSignature
- Accessibility
- OCR
created: '2025-02-08'
modified: '2026-04-28'
url: https://raw.githubusercontent.com/api-evangelist/nutrient-io/refs/heads/main/apis.yml
specificationVersion: '0.23'
apis:
- aid: nutrient-io:viewer-api
  name: Nutrient Viewer API
  description: Deliver rich document interactions directly in the browser including PDF rendering, annotation, form filling,
    and signature collection.
  humanURL: https://www.nutrient.io/api/viewer-api/
  tags:
  - Viewer
  - Annotation
  - Forms
  - Signatures
  tags_raw:
  - Viewer
  - Annotations
  - Forms
  - Signatures
  properties:
  - type: Documentation
    url: https://www.nutrient.io/api/viewer-api/
  - type: Reference
    url: https://www.nutrient.io/api/reference/public/
  - type: GettingStarted
    url: https://www.nutrient.io/guides/dws-viewer-api/
- aid: nutrient-io:processor-api
  name: Nutrient Processor API
  description: Headless cloud document workflow API for generation, conversion, extraction, OCR, and automation across PDFs
    and Office documents.
  humanURL: https://www.nutrient.io/api/processor-api/
  tags:
  - Processing
  - Conversion
  - OCR
  - Extraction
  properties:
  - type: Documentation
    url: https://www.nutrient.io/api/processor-api/
  - type: Reference
    url: https://www.nutrient.io/api/reference/public/
  - type: GettingStarted
    url: https://www.nutrient.io/guides/dws-processor/getting-started/
- aid: nutrient-io:accessibility-api
  name: Nutrient Accessibility API
  description: Automate PDF accessibility through cloud-based auto-tagging and validation to support compliance with WCAG
    and PDF/UA standards.
  humanURL: https://www.nutrient.io/api/accessibility-api/
  tags:
  - Accessibility
  - PDF/UA
  - WCAG
  - Tagging
  properties:
  - type: Documentation
    url: https://www.nutrient.io/api/accessibility-api/
  - type: Reference
    url: https://www.nutrient.io/api/reference/public/
- aid: nutrient-io:ai-api
  name: Nutrient AI API
  description: AI-powered document workflows including extraction, classification, and analysis built on top of the Nutrient
    document platform.
  humanURL: https://www.nutrient.io/api/ai/
  tags:
  - Artificial Intelligence
  - Extraction
  - Classification
  tags_raw:
  - AI
  - Extraction
  - Classification
  properties:
  - type: Documentation
    url: https://www.nutrient.io/api/ai/
common:
- type: Plans
  url: plans/nutrient-io-plans-pricing.yml
- type: RateLimits
  url: rate-limits/nutrient-io-rate-limits.yml
- type: FinOps
  url: finops/nutrient-io-finops.yml
- type: TrustCenter
  url: security/nutrient-io-trust-center.yml
- type: DomainSecurity
  url: security/nutrient-io-domain-security.yml
- type: GitHubOrganization
  url: https://github.com/pspdfkit
- type: LinkedIn
  url: https://www.linkedin.com/company/nutrient-sdk
- type: Website
  url: https://www.nutrient.io
- type: Documentation
  url: https://www.nutrient.io/api/
- type: Reference
  url: https://www.nutrient.io/api/reference/public/
- type: GettingStarted
  url: https://www.nutrient.io/guides/dws-processor/getting-started/
- type: Pricing
  url: https://www.nutrient.io/pricing/
- type: Blog
  url: https://www.nutrient.io/blog/
- type: Signup
  url: https://dashboard.nutrient.io/sign_up
- type: Login
  url: https://dashboard.nutrient.io/sign_in
- type: Support
  url: https://www.nutrient.io/support/
- type: StatusPage
  url: https://status.nutrient.io/
- type: TermsOfService
  url: https://www.nutrient.io/legal/terms-of-service/
- type: PrivacyPolicy
  url: https://www.nutrient.io/legal/privacy/
- type: Integrations
  url: https://www.nutrient.io/partners/
- type: LlmsText
  url: https://www.nutrient.io/llms.txt
integrations:
- name: Nutrient
- name: Cloud
- name: Workflow
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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