ConvertAPI vs Online2PDF

CConvertAPI8.1Visit Online2PDF7.8Visit

Higher score C ConvertAPI #11 in PDF Converter Software 8.1/10 Paid ✓ 3 of 3 features Visit ConvertAPI

vs

Online2PDF #13 in PDF Converter Software 7.8/10 Free plan Free plan✓ 2 of 3 features Visit Online2PDF

• ConvertAPI fits best

  Developers needing broad file conversion APIs

• Online2PDF fits best

  Free everyday browser-based PDF conversion

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Side by side

Feature	CConvertAPI 8.1/10 Visit ↗	Online2PDF 7.8/10 Visit ↗
At a glance
Editor score	8.1	7.8
Ranking	#11 in PDF Converter Software	#13 in PDF Converter Software
Best for	Developers needing broad file conversion APIs	Free everyday browser-based PDF conversion
Pricing model	Paid	Free
Starting price	—	Free plan
Free plan	—	✓ (best)
Free trial	—	—
Deployment	Cloud	Cloud
Platforms	Web	Web
Features ConvertAPI 3/3 · Online2PDF 2/3
OCR conversion	✓	✓
Batch conversion	✓	✓
API access	✓ (best)	—
Specs
Conversion targets	DOCX to PDF; PDF to DOCX; PDF to HTML; PDF to JPG; PDF to PNG; PDF to PPTX; PDF to SVG; PDF to TXT; PDF to XLSX; XLSX to PDF; HTML to PDF; images to PDF	PDF; Word; Excel; PowerPoint; JPG; images; XPS; ODS; EPUB; MOBI; AZW3
Maximum file size	200 MB	Not checked yet
Supported platforms	web, api	web
Our review
Pros	Converts over 100 file types with broad PDF conversion targets OCR, extraction, merging, batching, and chained workflows SDKs and integrations across major developer platforms	Converts between PDF, Office, image, e-book, and other formats Combines batch conversion with page extraction, splitting, and rearrangement Includes OCR, compression, password controls, and scan optimization
Cons	No permanent free plan Developer plan allows one concurrent conversion Advanced support and higher limits require paid upgrades	Web-only access means there is no desktop or downloadable version No Web API is available for automated or embedded conversion workflows Uploads are limited to 150 MB per file and 200 MB per conversion
Our verdict	ConvertAPI is a cloud-based file conversion service for developers and businesses building document workflows. Its REST API converts more than 100 file types to PDF and converts PDFs to DOCX, HTML, JPG, PNG, PPTX, SVG, TXT, and XLSX. It… Read the review →	Online2PDF is a browser-based PDF converter for individuals and businesses that need routine document processing without installing software. It converts documents, images, spreadsheets, presentations, e-books, and other supported formats… Read the review →

Strengths and trade-offs

• ConvertAPI — where it wins

  • Converts over 100 file types with broad PDF conversion targets
  • OCR, extraction, merging, batching, and chained workflows
  • SDKs and integrations across major developer platforms

  Where it doesn't

  • No permanent free plan
  • Developer plan allows one concurrent conversion
  • Advanced support and higher limits require paid upgrades

• Online2PDF — where it wins

  • Converts between PDF, Office, image, e-book, and other formats
  • Combines batch conversion with page extraction, splitting, and rearrangement
  • Includes OCR, compression, password controls, and scan optimization

  Where it doesn't

  • Web-only access means there is no desktop or downloadable version
  • No Web API is available for automated or embedded conversion workflows
  • Uploads are limited to 150 MB per file and 200 MB per conversion

• CConvertAPI8.1/10 · Paid

  A broad file-conversion API for developers, with paid plans and no permanent free tier.

  Visit ConvertAPIFull verdict →
• Online2PDF7.8/10 · Free plan

  A free browser-based converter for everyday PDF work, without desktop or API access.

  Visit Online2PDFFull verdict →