Zamzar API is a REST-based HTTP service for integrating file conversion into mobile, web, or desktop applications.
Alternatives to OCR.space
OCR.space turns JPG, PNG, GIF, and PDF files into editable text through a free online service, with no registration required. Its API returns text in JSON, handles images and multi-page PDFs, and offers three OCR engines, including one for handwriting, tables, and more than 200 languages. It can also create searchable PDFs, and OCR.space Local runs offline on a PC, in a data center, or in virtualized and cloud environments. The free plan caps files at 1 MB and PDFs at three…
easyPDF Cloud API is a cloud platform for generating, converting, and automating PDF work.

PDFMonkey
PDFMonkey is a cloud document-generation API that turns templates and dynamic data into files.
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CraftMyPDF
CraftMyPDF is a cloud service for designing reusable document templates and generating PDFs or images from dynamic data.
Free planWebAPI7.5From $29 a month - 5
HTML2PDF Rocket
HTML2PDF Rocket is a cloud service that converts a webpage URL or submitted HTML into a PDF or image file.
Free planAndroidWebAPILinux7.5From $5 a month - 6
7.2From $8.99 a month - 7

DocRaptor
DocRaptor is a cloud REST API that converts HTML, CSS, and JavaScript into PDF and XLS documents using the Prince PDF converter.
Free planWebAPI7.1From $15 a month - 8
HTMLPDF.dev
HTMLPDF.dev converts raw HTML or a publicly accessible URL into a PDF through a cloud API.
Free planWebAPI6.9From $19 a month - 96.9From €15 a month
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pdflayer
pdflayer is a cloud REST API for converting HTML or HTTP URLs into PDF documents.
Free planWebAPI6.9From $9.99 a month - 11
Aspose.PDF Cloud
Aspose.PDF Cloud is a PDF processing service for developers and businesses that need to work with documents through REST APIs and SDKs.
AndroidiOSWebAPI6.8$30 usage-based - 12

DynamicPDF Cloud API
DynamicPDF Cloud API provides cloud tools for creating and manipulating PDF documents through REST endpoints and client libraries.
Free planWebAPI6.8From $19.95 a month - 13

PDF Generator API
PDF Generator API automates PDF creation from data and reusable document templates.
WebAPISelf-hosted6.8From €80 a year - 14

PDF4me API
PDF4me API gives developers REST endpoints and SDKs for document conversion, OCR, signing and parsing, alongside browser tools for converting,…
Free planAndroidiOSWebAPI6.8Free plan - 15
LlamaParse
LlamaParse converts complex documents into structured data for AI workflows, handling layouts, tables, charts, handwriting, checkboxes, and images.
Free planWebAPISelf-hosted6.7From $50 a month - 16
PDFCrowd API
PDFCrowd API is a paid cloud service for converting HTML, URLs, PDFs, and images through APIs, integrations, and online tools.
WebAPILinux6.7From $1 a month - 176.7From €5 a month
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pdfRest API Toolkit Cloud
pdfRest API Toolkit Cloud provides APIs for converting, compressing, modifying, extracting, and securing digital documents.
Free planWebAPI6.7From $9.99 a month - 19

APITemplate.io
APITemplate.io is a cloud-based web service for generating PDFs and images from templates or supplied content.
Free planWeb6.6From $19 a month - 20
6.5From $39 a month - 21
Cloudmersive PDF API
Cloudmersive PDF API is a PDF-processing API for businesses and developers.
Free planAPISelf-hosted6.5From $19.99 a month - 22

DocSpring
DocSpring is a PDF automation API for developers filling forms, generating documents, and collecting electronic signatures.
WebAPISelf-hosted6.5From $49 a month - 23

PDFShift
PDFShift is a cloud, web-based service for converting HTML into PDF files and images.
Free planWeb6.5From $24 a month - 24
GoPDF
GoPDF is a managed cloud API that converts HTML content or URLs into PDF documents.
Free planWebAPI6.4From $9 a month - 256.4From $599 a month
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Sensible
Sensible is a cloud document-processing service that combines AI extraction with deterministic, rule-based methods.
WebAPI6.4From $449 a month - 27
Adobe PDF Services API
Adobe PDF Services API is a cloud-based web API for creating, converting, and organizing PDF documents.
Free planWeb6.2Free plan - 28

iLoveAPI
iLoveAPI provides REST APIs for automating document work, with tools for PDFs, images, and electronic signatures.
Free planWebAPI6.2Free plan - 29
VeryPDF Cloud API
WebAPI6.1From $499.95 a year - 30
Adobe Document Generation API
Free planWeb5.9Free plan