Zamzar API vs Sejda API

Zamzar API9.0Visit Sejda API8.3Visit

Higher score Zamzar API #2 in PDF API Software 9.0/10 Free plan Free plan✓ 2 of 5 features Visit Zamzar API

vs

Sejda API #6 in PDF API Software 8.3/10 Paid ✓ 1 of 5 features Visit Sejda API

• Zamzar API fits best

  Large-scale multi-format conversion

• Sejda API fits best

  Responsive HTML-to-PDF rendering

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature	Zamzar API 9.0/10 Visit ↗	Sejda API 8.3/10 Visit ↗
At a glance
Editor score	9.0	8.3
Ranking	#2 in PDF API Software	#6 in PDF API Software
Best for	Large-scale multi-format conversion	Responsive HTML-to-PDF rendering
Pricing model	Free plan + paid	Paid
Starting price	—	$12/mo
Free plan	✓ (best)	—
Free trial	—	—
Deployment	Cloud	Cloud, Self-hosted
Support	Email, Tickets, Docs	Email
Built for	Small business, Mid-market, Enterprise	Small business, Mid-market, Enterprise
Features Zamzar API 2/5 · Sejda API 1/5
OCR	Not checked yet	Not checked yet
PDF conversion	✓	✓
Data extraction	✓ (best)	Not checked yet
Merge and split	Not checked yet	Not checked yet
PDF compression	Not checked yet	Not checked yet
Specs
Deployment model	Cloud	Hybrid
SDK languages	Java, PHP, Python	Not checked yet
Our review
Pros	Converts files across more than 1,100 formats Supports asynchronous jobs and structured PDF extraction Connects through HTTP, FTP, SFTP and Amazon S3	Converts HTML source code and web-page URLs into PDFs Supports viewport, print stylesheet, delayed rendering, and lazy loading Offers REST, CORS, token authentication, and Docker deployment options
Cons	PDF workflows focus on conversion rather than editing No OCR capability is included in the listed features Higher tiers are needed for larger files and heavier volume	Focused on conversion rather than broader PDF operations No free plan is available Official API documentation does not describe SDK client libraries
Our verdict	Zamzar API is a cloud-based REST API for developers building file-conversion workflows. It handles documents, images, audio, video, CAD files, eBooks and other formats, with support for more than 1,100 conversion types. PDF workflows… Read the review →	Sejda API is a hosted REST service for converting HTML source code and web-page URLs into PDF documents. It suits teams that need programmatic document generation from responsive web content, including pages that rely on client-side… Read the review →

Strengths and trade-offs

• Zamzar API — where it wins

  • Converts files across more than 1,100 formats
  • Supports asynchronous jobs and structured PDF extraction
  • Connects through HTTP, FTP, SFTP and Amazon S3

  Where it doesn't

  • PDF workflows focus on conversion rather than editing
  • No OCR capability is included in the listed features
  • Higher tiers are needed for larger files and heavier volume

• Sejda API — where it wins

  • Converts HTML source code and web-page URLs into PDFs
  • Supports viewport, print stylesheet, delayed rendering, and lazy loading
  • Offers REST, CORS, token authentication, and Docker deployment options

  Where it doesn't

  • Focused on conversion rather than broader PDF operations
  • No free plan is available
  • Official API documentation does not describe SDK client libraries

• Zamzar API9.0/10 · Free plan

  A broad conversion API for teams processing many file types at scale.

  Visit Zamzar APIFull verdict →
• Sejda API8.3/10 · Paid

  A focused HTML-to-PDF API with responsive rendering controls and scalable request tiers.

  Visit Sejda APIFull verdict →