Sejda HTML to PDF API
The HTML to PDF API from Sejda — 1 operation(s) for html to pdf.
OpenAPI Specification
openapi: 3.0.1
info:
title: Sejda HTML to PDF API
description: The Sejda HTML to PDF API converts a web page URL or a raw HTML string into a PDF document. It is the only documented hosted REST API offered by Sejda; Sejda states it does not provide hosted API access to its other PDF tools (merge, compress, etc.). Requests are authenticated with a secret Token API key, or a publishable key for browser-side use with a configured allowed-domains list.
termsOfService: https://www.sejda.com/terms-of-service
contact:
name: Sejda Support
url: https://www.sejda.com/help
version: '2'
servers:
- url: https://api.sejda.com/v2
description: Sejda API v2
tags:
- name: HTML to PDF
paths:
/html-pdf:
post:
operationId: htmlToPdf
tags:
- HTML to PDF
summary: Convert a URL or HTML to a PDF document.
description: Renders the supplied URL or raw HTML and returns the generated PDF as a binary stream. Provide either `url` or `htmlCode`. Some parameters are Pro-only and return HTTP 450 on free accounts. The generated PDF must be smaller than 50MB.
security:
- TokenAuth: []
requestBody:
required: true
content:
application/json:
schema:
$ref: '#/components/schemas/HtmlToPdfRequest'
examples:
fromUrl:
summary: Convert a URL
value:
url: https://example.com
pageSize: a4
pageOrientation: auto
fromHtml:
summary: Convert raw HTML
value:
htmlCode: <html><body><h1>Hello</h1></body></html>
pageSize: a4
responses:
'200':
description: OK - the generated PDF document stream.
content:
application/pdf:
schema:
type: string
format: binary
'400':
description: Invalid request.
'403':
description: Authorization failure or CORS / allowed-domain restriction.
'413':
description: Payload exceeds the 50MB limit.
'429':
description: Rate limit exceeded (requests-per-hour or concurrency).
'450':
description: A Pro-only parameter was used on a free account.
'500':
description: Server error - retry recommended.
'550':
description: Conversion failed (page unreachable or could not be loaded).
components:
schemas:
HtmlToPdfRequest:
type: object
description: HTML-to-PDF conversion request. Supply either `url` or `htmlCode`. Pro-only fields are noted in their descriptions.
properties:
url:
type: string
format: uri
description: URL of the web page to render to PDF.
htmlCode:
type: string
description: Raw HTML to render to PDF (alternative to `url`).
viewportWidth:
type: integer
description: Browser viewport width in pixels used while rendering.
pageSize:
type: string
description: Output page size (e.g. a4, letter).
pageOrientation:
type: string
description: Page orientation - auto, portrait, or landscape.
pageMargin:
type: number
description: Page margin value.
pageMarginUnits:
type: string
description: Units for the page margin (e.g. px, mm, in).
hideNotices:
type: boolean
description: Hide notice elements when rendering.
usePrintMedia:
type: boolean
description: Render using print media CSS rules.
delay:
type: integer
description: Delay in milliseconds before capturing the page.
scrollPage:
type: boolean
description: Scroll the page to trigger lazy-loaded content before rendering.
authUsername:
type: string
description: HTTP basic auth username for protected source pages (Pro).
authPassword:
type: string
description: HTTP basic auth password for protected source pages (Pro).
waitForSelector:
type: string
description: Wait until a CSS selector is present before rendering (Pro).
timezone:
type: string
description: Timezone used while rendering (e.g. America/New_York).
lang:
type: string
description: Language hint for rendering (e.g. en).
securitySchemes:
TokenAuth:
type: apiKey
in: header
name: Authorization
description: 'Secret API key sent as `Authorization: Token: api_YOURAPIKEYHERE`. A publishable key (`api_public_...`) may be used for browser-side requests when the calling domain is on the account''s allowed-domains list.'