Sejda

Sejda provides online and desktop tools for editing and manipulating PDF documents - merge, split, compress, convert, edit, watermark, OCR, and fill forms. Its only documented hosted REST API is the HTML-to-PDF conversion API at api.sejda.com; the broader merge/split/OCR task set is delivered through the web and desktop apps and through the open-source Sejda SDK and sejda-console (Java, AGPLv3), not a hosted task API.

Sejda publishes 4 API contracts indexed on the APIs.io network, including HTML to PDF API, and 3 more. Tagged areas include PDF, Document Conversion, HTML to PDF, PDF Editing, and OCR.

Sejda’s developer surface includes authentication, documentation, engineering blog, and 9 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

27.9/100 thin ▬ flat Agent 23/100 agent aware Front door AI 1/6 silent saas Full breakdown ↓
scored 2026-10-23 · rubric v0.25.0 · Show this score on your site →

AccessFreemiumSelf serve⚡ Free to try

1 published contract

PDF Document Conversion HTML to PDFPDF EditingOCR

Kin Score

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

Composite quality — 27.9/100 · thin

Contract Quality 9.9 / 19

Developer Ergonomics 3.8 / 15

Access Clarity 1.2 / 15

Operational Transparency 2.1 / 10

Contract Governance 0.0 / 9

Discoverability 4.3 / 8

Regulatory Posture 2.6 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 23/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 7 / 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 applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% 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/sejda: 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	-	-	-
PDF and Document Standards (PDF tooling, document signing trust, invoice documents)	undeclared	-	-	-

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.

Sejda PDF Tools (Web and Desktop)

Sejda's full PDF task catalog - merge, split, compress, convert (Office/HTML to PDF, PDF to images), edit, watermark, OCR, and fill forms - delivered as online (browser) and des...

Sejda SDK

Open-source (AGPLv3) Java library for PDF manipulation - merge, split, rotate, encrypt, watermark, and more - built on SAMBox (a maintained PDFBox fork). This is an embeddable c...

Sejda Console

Command-line shell over the Sejda SDK for running PDF tasks (merge, split, etc.) from a terminal or scripts. Requires a Java runtime. A commercial sejda-console-pro build exists...

Sejda HTML to PDF API

The HTML to PDF API from Sejda — 1 operation(s) for html to pdf.

Open Collections 2

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

Sejda HTML to PDF API

OPEN COLLECTION

Sejda HTML to PDF API

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Sejda Plans Pricing

9 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Sejda Rate Limits

3 limits

RATE LIMITS

FinOps 1

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

Sejda Finops

FINOPS

Security Posture 3

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

Sejda Authentication

apiKey · 1 scheme

SECURITY

Sejda Domain Security

TLSv1.3 · DNSSEC · DMARC

SECURITY

Sejda Vulnerability Disclosure

security.txt · contact published

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Sejda Agentic Access

1 operation · 1 acting

1 operations · 1 acting

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 3

Authentication, authorization, and security posture

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

Company 3

The organization behind the API

LinkedIn

Website

Website

Blog

Blog

Source (apis.yml)

aid: sejda
url: https://raw.githubusercontent.com/api-evangelist/sejda/refs/heads/main/apis.yml
name: Sejda
kind: company
description: Sejda provides online and desktop tools for editing and manipulating PDF documents - merge, split, compress,
  convert, edit, watermark, OCR, and fill forms. Its only documented hosted REST API is the HTML-to-PDF conversion API at
  api.sejda.com; the broader merge/split/OCR task set is delivered through the web and desktop apps and through the open-source
  Sejda SDK and sejda-console (Java, AGPLv3), not a hosted task API.
deliveryModel:
  model: saas
  license_evidence:
    not_product:
    - torakiki/sejda
  open_source: unknown
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: low
  source:
  - openapi
  - pricing
  - repository-not-product
  generated: '2026-09-25'
  method: derived
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/sejda.png
tags:
- PDF
- Document Conversion
- HTML to PDF
- PDF Editing
- OCR
created: '2026-06-25'
modified: '2026-06-25'
specificationVersion: '0.23'
apis:
- aid: sejda:sejda-pdf-tools
  name: Sejda PDF Tools (Web and Desktop)
  tags:
  - PDF Editing
  - Merge
  - Split
  - Compress
  - Watermark
  - OCR
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://www.sejda.com/
  properties:
  - url: https://www.sejda.com/
    type: Documentation
  - url: https://www.sejda.com/help
    type: Documentation
  description: Sejda's full PDF task catalog - merge, split, compress, convert (Office/HTML to PDF, PDF to images), edit,
    watermark, OCR, and fill forms - delivered as online (browser) and desktop applications. These tasks are NOT exposed as
    a hosted REST API; only HTML-to-PDF has a documented API.
- aid: sejda:sejda-sdk
  name: Sejda SDK
  tags:
  - SDK
  - Java
  - Open Source
  - PDF Manipulation
  tags_raw:
  - SDK
  - Java
  - Open Source
  - PDF Manipulation
  - Open-Source
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://sejda.org/
  properties:
  - url: https://sejda.org/
    type: Documentation
  - url: https://github.com/torakiki/sejda
    type: SourceCode
  - url: https://github.com/torakiki/sejda/wiki
    type: Documentation
  description: Open-source (AGPLv3) Java library for PDF manipulation - merge, split, rotate, encrypt, watermark, and more
    - built on SAMBox (a maintained PDFBox fork). This is an embeddable code library, not a hosted network API; a commercial
    Pro license is available for non-AGPL use.
- aid: sejda:sejda-console
  name: Sejda Console
  tags:
  - CLI
  - Java
  - Open Source
  - PDF Manipulation
  tags_raw:
  - CLI
  - Java
  - Open Source
  - PDF Manipulation
  - Open-Source
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://sejda.org/download
  properties:
  - url: https://sejda.org/download
    type: Documentation
  - url: https://github.com/torakiki/sejda/wiki
    type: Documentation
  - url: https://github.com/torakiki/sejda
    type: SourceCode
  description: Command-line shell over the Sejda SDK for running PDF tasks (merge, split, etc.) from a terminal or scripts.
    Requires a Java runtime. A commercial sejda-console-pro build exists. This is a local CLI tool, not a hosted API.
- aid: sejda:sejda-html-to-pdf-api
  name: Sejda HTML to PDF API
  description: The HTML to PDF API from Sejda — 1 operation(s) for html to pdf.
  humanURL: https://www.sejda.com/developers
  baseURL: https://api.sejda.com/v2
  tags:
  - HTML to PDF
  properties:
  - type: OpenAPI
    url: openapi/sejda-html-to-pdf-api-openapi.yml
  - type: Documentation
    url: https://www.sejda.com/developers
  - type: Documentation
    url: https://www.sejda.com/html-pdf-api
  - type: PostmanCollection
    url: collections/sejda.postman_collection.json
  - type: OpenCollection
    url: collections/sejda.opencollection.json
common:
- type: AgenticAccess
  url: agentic-access/sejda-agentic-access.yml
- type: VulnerabilityDisclosure
  url: security/sejda-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/sejda-domain-security.yml
- type: Authentication
  url: authentication/sejda-authentication.yml
- type: GitHubOrganization
  url: https://github.com/sejda-pdf
- type: LinkedIn
  url: https://www.linkedin.com/company/sejda
- type: Website
  url: https://www.sejda.com
- type: Documentation
  url: https://www.sejda.com/developers
- type: Plans
  url: plans/sejda-plans-pricing.yml
- type: RateLimits
  url: rate-limits/sejda-rate-limits.yml
- type: FinOps
  url: finops/sejda-finops.yml
- type: Blog
  url: https://www.sejda.com/blog/rss
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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