Best PDF APIs for Startups
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What are PDF APIs for Startups?
PDF APIs are software interfaces that enable developers to integrate PDF-related functionality into their applications or websites. These APIs allow for the creation, manipulation, conversion, and extraction of content from PDF files without requiring users to manually open or edit the files. Common features of PDF APIs include merging, splitting, editing text, adding annotations, and extracting text and images. They can also handle PDF conversions, such as converting PDFs to other formats like Word, Excel, or HTML, and vice versa. By using PDF APIs, businesses can automate document workflows, enhance document management systems, and integrate PDF capabilities into custom applications seamlessly. Compare and read user reviews of the best PDF APIs for Startups currently available using the table below. This list is updated regularly.
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1
Pdftools
PDF Tools
Whether you have thousands of documents or millions, Pdftools has the products and services to help make processing a breeze. Designed for document-heavy industries, Pdftools’ suite of SDKs and APIs are here to make your document workflows easier, faster, and stress-free. Built on SDKs and APIs, the Pdftools products integrate seamlessly into your existing (or new) systems and applications. Process thousands of documents every minute. Our tools are precision-engineered to be efficient and run at blazing speeds. We’re engineers at heart, so we’re only satisfied with the most reliable, orderly, and usable, and well-documented platforms. Shrink file sizes down, but keep the quality and interactivity. Your documents will always be compliant for long-term archiving. We’ve obsessed over every detail in our products, and documented everything so it’s easy to get started.Starting Price: $0/month/user -
2
DocuGenerate
DocuGenerate
Easily generate PDF documents like invoices, letters, contracts, agreements, certificates and more with our API and web app. Prepare your Word template with tags where you want to have dynamic text. Then provide the data as JSON or in an Excel file. For each data item, a document will be generated from the template by replacing the tags with the actual data. The advanced customization options can help your business generate PDF documents for any use case with minimal effort. After uploading the template, the merge tags are automatically detected based on the template content. Create personalized experiences for your business using our REST API. Generate in bulk thousands of PDF documents like invoices, letters, contracts, agreements, certificates, and more. Simply call the generate document API endpoint with your data and in a few seconds a document will be generated from the specified template, ready for use in your own application or workflow.Starting Price: $19 per month -
3
RAD PDF
Red Software
Add a fully functional PDF editor to your ASP.NET website in minutes! Compatible with 99% of desktop & mobile browsers, from Internet Explorer 6 through the latest iOS Safari release, RAD PDF simply works. No plugins or other software needed. RAD PDF natively supports the most commonly used PDF features. Beyond a PDF reader, RAD PDF equips web applications with a browser-based PDF editor & PDF annotator. Features not even available in Adobe Acrobat Reader can be used to provide advanced PDF functionality. By enabling PDF form filling, PDF redaction, & PDF signing directly in the web browser, RAD PDF users can utilize PDF features without worrying about having the right platform or software installed! Allow your app to design new PDF forms, protect content, sign PDFs, & more using an intuitive graphical user interface (GUI). Client (JavaScript) and server APIs allow for endless possibilities .NET Core, Framework, & .NET 5+ supported Try editing any PDF with RAD PDF, FREE!Starting Price: $299 per developer -
4
Nutrient SDK
Nutrient
Nutrient is the comprehensive solution for all your PDF needs, offering tools that effortlessly integrate and operate PDF functionality across any platform. 1. SDK PRODUCTS Integrate robust PDF functionality into iOS, Android, Windows, web (JavaScript), or any cross-platform technology, providing capabilities such as PDF viewing, markup, collaboration, and more. 2. LIBRARIES Utilize our potent .NET and Java libraries to boost your backend applications with batch processing of redactions and PDF forms, OCR’d scanned text, and editing of PDF documents, directly from your application server. 3. PROCESSOR Our dynamic PDF microservice, Processor, enables swift generation of PDFs from HTML, including HTML forms, along with Office-to-PDF conversions, OCR, redaction, and XFDF merging and exporting. 4. PDF API Use hosted PDF API to generate, convert, and modify PDF documents in your workflows. We manage the development and server administration, letting you focus on what you do best. -
5
MindCloud
MindCloud
MindCloud is a software company that builds and maintains custom connections between your software and other platforms so you can eliminate manual data entry and start automating and scaling your business. As technology continues to advance, the modern business owner is using more and more online software tools to manage their business. MindCloud creates a seamless flow from one software platform to the next, saving time and money by connecting your software and automating your business process. We have over 50 prebuilt connectors and can add new connectors within 2-3 weeks of starting a project. What makes us different is we provide a full service that doesn't take extra technical resources on your end. We specialize in Salesforce, Hubspot, Monday.com, QuickBooks, Method:CRM, Zapier, Amazon, Ebay, Groupon, Mercado Libre, HSN, Airtable, Google Sheets and many others. Integrate your business. Simplify your life.Starting Price: $625/month -
6
pdfRest
Datalogics Inc.
pdfRest API Toolkit was made by developers, for developers. Rapidly integrate PDF workflows with any business application, simply and seamlessly. pdfRest API Toolkit includes all of the PDF processing tools you'll need, to make your job easy. PDF to Word, PDF to Excel, PDF to PowerPoint, Add to PDF, Query PDF, Extract Text, Convert to PDF, PDF to Images, Convert to PDF/A, Convert to PDF/X, Compress PDF, Linearize PDF, Flatten Forms, Flatten Transparencies, Flatten Annotations, Flatten Layers, Merge PDFs, Split PDF, Encrypt PDF, Decrypt PDF, Restrict PDF, Watermark PDF, Import Form Data, Export Form Data, Convert PDF Colors, OCR PDF, API Polling, Upload Files, Zip Files. Get up and running fast with the pdfRest Postman Collection or start from functional sample code in .NET, JavaScript, Python, PHP, and cURL from the pdfRest GitHub repository. Gold-standard processing powered by Adobe® PDF Library™ ensures the highest quality results. Free to get started with no commitment.Starting Price: $0 per month -
7
PrizmDoc
Accusoft
Through a collection of UI components and content manipulation APIs, PrizmDoc provides customizable document processing to help developers deliver in-browser document creation, editing, and collaboration functionality, to enhance their software applications. Our functionality integrates on the client and server side smoothly, creating a seamless experience for both you and your users. Render and display dozens of file types, from Adobe PDFs and Microsoft Office files to CAD and DICOM formats, in a browser without the need to download or open native applications. Designed for seamless integration with your application, our zero footprint HTML5 viewer is fully customizable, from quick integrations with minimal configuration to complete programmatic control using our extensive JavaScript API. -
8
PDF Automation Server
Qoppa
PDF Automation Server – PDF Processing Server PDF Automation Server is a modular server product that provides a rich set of PDF processing functions for different environments. Use PAS as an essential tool to streamline your PDF processing, document workflows and web service orchestration in your organization. REST API Module Use REST API calls to easily integrate into your existing document workflows HTML5 PDF Module Convert documents and serve end-users PDF files directly in the browser Workflow Module Automate the receiving, processing & routing of documents with the PAS Workflow Module Robust REST API PDF Automation Server provides a complete set of PDF processing and conversion functions in a robust REST server environment that can easily integrate into your existing document workflows and work with 3rd party integration and orchestration products. HTML PDF Markup Module PDF Automation Server provides a module to enable markup of PDF documents in the browser.Starting Price: $2,400 -
9
jPDFOptimizer
Qoppa Software
jPDFOptimizer is a Java library to optimize and reduce the size of PDF documents. jPDFOptimizer can remove unnecessary objects in PDF documents, detect and merge duplicate images and fonts, and modify image resolution, compression and color spaces to reduce size. The library provides a powerful, yet simple API to let the calling application fine tune how to optimize documents. jPDFOptimizer is built on Qoppa Software’s extensive PDF technology and requires no third party software or drivers. The library is 100% Java and can run on any operating system for which there is a standard Java implementation, such as Windows, Linux, Unix, Solaris and others. Features: -Modify image resolution, compression and color spaces -Compress images using JPEG, JPEG 2000 and JBIG2 -Compress data streams -Remove unused objects -Remove and merge duplicate images and fonts -Flexible optimization options -Linearize PDFs for fast web view -Support for latest PDF format -Support for JDK 1.6+ -
10
MuPDF
Artifex Software
Add powerful PDF functionality to all of your software application projects. MuPDF is a highly versatile, customizable PDF SDK that can be used as a PDF renderer, viewer, or library. The tiny footprint and lightning-fast performance make MuPDF a perfect fit for mobile browsers, eBooks, and embedded applications where small size is key. MuPDF supports a variety of interactive features including annotations, form filling, digital signatures, redactions, text search, and progressive loading. The wide range of input and output formats and our full range of platform support deliver a flexible solution to easily and successfully fulfill your project’s unique needs. MuPDF supports PDF, XPS, OpenXPS, EPUB, FictionBook 2 and CBZ. The MuPDF API easily integrates with all of the major platforms including Android, iOS, Linux, macOS, OpenBSD, and Windows. C++ and Python bindings have been added making it easy to use the MuPDF library from these languages.Starting Price: $749/per platform* -
11
pdfRest API Toolkit Self-Hosted
Datalogics Inc.
pdfRest API Toolkit Self-Hosted is available on the AWS Marketplace and can be spun up in just a few clicks. Self-host a production ready server to integrate the PDF processing API Toolkit into your own service or to automate your internal document workflow. Watermark PDF, Add to PDF, Query PDF, Convert to PDF, PDF to Images, Convert PDF Colors, Convert to PDF/A, Convert to PDF/X, Compress PDF, Linearize PDF, Flatten Annotations, Flatten Layers, Flatten Transparencies, Merge PDFs, Split PDF, Encrypt PDF, Decrypt PDF, Restrict PDF, Extract Text, OCR PDF, Upload Files, Zip Files. Maintain full control with a dedicated EC2-based RESTful API with scalable performance to meet your needs. Built with Adobe PDF Library, the same technology that powers Adobe Acrobat, and developed by Datalogics, globally-trusted document processing experts for over 50 years, pdfRest has the gold-standard API Toolkit for high-quality PDF processing.Starting Price: $0.242 per hour -
12
ComPDFKit PDF SDK
PDF Technologies, Inc.
ComPDFKit PDF SDK offers a top-quality PDF SDK and PDF API for developers or companies. It allows them to integrate PDF editing, annotating, converting, form filling, digital signing, comparing, measuring, and redacting into any device. Product Details of ComPDF: - ComPDFKit PDF SDK Our PDF SDK renders PDFs at the fastest speed and provides rich and reliable functionalities including viewing, markup, content & page editing, digital & electronic signing, form filling, OCR, comparing, measuring, etc., satisfying the needs of processing PDFs in different scenarios. - ComPDFKit Conversion SDK Support Convert PDF to or from Word, Excel, PPT, TXT, RTF, PNG, JPG, HTML, JSON, markdown, searchable PDF, etc. - ComIDP ComIDP is the intelligent document processing, allow companies to integrate for unstructured data extracting, knowledge base building, AI Q&A, image pre-processing, PDF parsing, PDF data extraction, PDF table extraction, etc. -
13
KDAN PDF Reader
Kdan Mobile Software
KDAN PDF Reader is your all-in-one PDF solution. Edit, sign, OCR scan, convert, annotate, and fill forms in PDF documents. With innovative AI features, speed up your document workflow! Designed for Mac, iPhone, and iPad, KDAN PDF Reader is trusted by millions for its comprehensive features and efficiency. **Spring Sale: Work smarter with KDAN PDF Reader—get 40% OFF Document 365 AI+, our AI-powered, cross-platform subscription. Offer ends May 8. AI FEATURE • Analyze and extract key information or tables from a PDF, then convert the data into spreadsheets for further analysis or visualization. • Chat with PDF and get document analysis, advice, new ideas, or content summary • Text redaction - automatically identify and block sensitive information in a documentStarting Price: $59.99/year (billed annually) -
14
Document APIs
GrapeCity
Fast, efficient Document APIs for .NET Standard 2.0 and Java Take total document control with ultra-fast, low-footprint document APIs for enterprise apps. Generate, load, edit, save spreadsheets, PDF, images, and DOCX files. Create large spreadsheets, Word, images, and PDF documents, fast. No dependencies on Excel, Word, or Acrobat Run on Windows, Mac, Linux Deploy to Azure, AWS, and AWS Lambda What’s New in GrapeCity Documents v5: - Full support for .NET 6 - SVG support for GrapeCity Documents for PDF and Imaging - Print PDF documents on Windows with GrapeCity Documents for PDF - UI enhancements for GrapeCity Documents for PDF Viewer - And much more!Starting Price: $999 per developer -
15
PDF Conversion SDK
Visual Integrity Technologies
Add PDF Features with 2 API Calls Open, Edit, and View PDF. All that's needed is two API calls and a configuration file. Within a day, you can add, open, import, edit and view PDF features in your app. When formats don't match one-to-one, the SDK neutralizes the differences. This includes adding cropping, fills, color management and fonts. The PDF Conversion SDK processes all PDF versions including ISO Standard PDF 2.0. Any PDF from file or print-ready memory is valid input. Conversions flow straight through without intermediate steps or compromised quality. No printer driver. The PDF Conversion SDK runs on Windows, MacOS and Linux. It supports .NET. Example code included. Removes redundant information & compresses data. This ensures great performance for fast web and application viewing. Search for objects and text strings. Convert PDF to your native file format. Change the contents of a PDF page. Extract images from PDF. Retrieve metadata from PDF (layers, geospecification, etc).Starting Price: $199 per year -
16
PageToPDF
Aypeye
Converting a Web Page or Website to PDF for Free Online has never been easier than with PageToPDF @ Aypeye. Our SaaS cloud-hosted PDF converter can quickly and easily convert any webpage into a high-quality PDF file. PageToPDF also offers an Application Programming Interface (API) for bulk PDF conversion. Enter the URL of any webpage and our advanced software will automatically convert it into a professional-looking PDF document. Our PDF generator is perfect for professionals who need to save important web content for reference or sharing with clients. It's also ideal for students who need to save online articles for research or study purposes. There are no monthly fees or contracts. Page To PDF is priced as a Pay As You Go model meaning you only pay for what you use.Starting Price: $15 for 500 PDFs -
17
PDF Library
Big Faceless Organization
PDF library for creating, editing, displaying and printing Acrobat PDF documents. The PDF API is small, fast, easy to use and integrate into your projects, and is completely written in Java. The API has been designed so you don't need to know the PDF specification in order to create PDFs. We hide as much of the gory details as possible but still give you almost complete control over the PDF itself. Where possible we re-use standard Java classes - for example the pages are stored in a java.util.List, which can be manipulated any way you like (so moving pages from one document to another is a breeze). This means an API which is smaller and easier to remember.Starting Price: $850.00/one-time/user -
18
DocSpring
DocSpring
Makes it easy for programmers to fill out and generate PDFs. We provide a visual PDF template editor and PDF filling API. Fill out PDFs with an API request. DocSpring makes it easy for developers to fill out PDF forms. Upload a PDF template, we’ll automatically import fields if your PDF has a fillable form. Set up your fields, use our visual template editor to drag-and-drop your fields. Send an API request, send a POST request to generate a PDF with a few lines of code. Drag-and-drop your fields in DocSpring's visual PDF template editor, then set your fields types, conditions, and how you want to display the data. Ensure the data you send in your API requests matches the fields in your PDF templates. Never accidentally delete a field or send the wrong data. We support a wide range of field types, so you can fill out and sign any type of form. Fields include barcode, QR code, image, signature, and many more. We can generate web-based forms from the fields in your PDF template.Starting Price: $49 per month -
19
Anvil
Anvil
Anvil provides companies who require a high volume of PDFs to be filled, generated, maintained, and/or signed a customizable, embedded, logic-based workflow platform.Starting Price: $0 per month -
20
GDPicture Document Processing SDKs
GdPicture.NET
The only Document Processing SDKs with 3000+ features. GdPicture is altogether a PDF, OCR, barcode, document imaging, and formats SDK with more than 3,000 functionalities, for any software development. Five-in-One Toolkit! Unlike most SDK companies that sell separate toolkits, GdPicture delivers an all-in-one SDK without extra costs or complex licensing. Offers advanced set of APIs with leading-edge technologies like artificial intelligence, machine learning, fuzzy logic algorithms, etc. for any of your development projects. With ~15 years of continuous research and a focus on innovation, our SDKs have become the most comprehensive solution in the market. -
21
ByteScout PDF Viewer SDK
ByteScout
PDF Viewer SDK is a visual control to create your own PDF reader in .NET desktop apps. Controls for viewing PDF files in your .NET desktop app, works offline with no Internet connection required, helper function zoom in and zoom out, change page, copy text to the clipboard, search text, night mode for PDF reading (sets the background to black, inverts text). You will find a mixture of very sophisticated technologies in all our tools. It helps them to achieve better performance. We prepared lots of source code samples and documentation helping to quickly start working with our products. You will find a mixture of very sophisticated technologies in all our tools. It helps them to achieve better performance. We keep updating our SDKs, API, and free apps all the time. Also, our team is ready to fix bugs and issues if you find any. We prepared lots of source code samples and documentation helping to quickly start working with our products.Starting Price: $881.99 one-time payment -
22
JPedal
IDR Solutions
JPedal is a versatile Java PDF Library for displaying, converting, printing, and parsing PDFs in Java applications. With over 20 years of development, it supports a wide range of PDF files. Key features include: -PDF to Image Conversion: Converts PDFs to images in various formats. -Java Swing PDF Viewer: Offers multi-page display, search, printing, and annotation editing. -Text and Image Extraction: High-quality extraction of text and images from PDFs. -PDF Search: Supports searching with wildcards and regular expressions. -Form & Annotation Handling: Supports XFA and AcroForms, enabling form data access and annotation editing. -Document Manipulation: Allows deleting, merging, splitting, and optimizing PDFs. -Security & Performance: Runs locally without third-party dependencies, processing PDFs up to 3x faster than alternatives.Starting Price: $950 one time fee -
23
PDFmyURL
PDFmyURL
Use our HTML to PDF API to create PDFs from URLs or HTML. Let your visitors save web pages as PDFs with a single click! Convert entire websites to PDF easily! Join thousands of customers making high-quality PDFs since 2008! Quickly and easily convert any URL or raw HTML into a high-quality PDF. You can use our REST API in any programming language and it comes packed with many options for different layouts, headers, footers, watermarking encryption, and much more. Put a save as PDF link or button on any of your web pages and let your visitors download these pages as PDF with a single click. You control many layout options and set a custom header and/or footer. Save your entire website as a PDF for copyright or other purposes. You just enter the URL and we'll take all the pages of the website and pack them into a single PDF. You grab a coffee and wait until we finish because we'll email you when it's done!Starting Price: $19 per month -
24
PDFKit.NET 5.0
TallComponents
Create and manipulate PDF documents. Split, append, stamp, encrypt, extract, fill, and more. PDFKit.NET is a 100% managed (verifiable) .NET class library for creating and manipulating PDF documents. It consists of just a single assembly that can be xcopy-deployed. It has no dependencies other than the .NET framework. Central to PDFKit.NET is a consistent and highly intuitive object model consisting of classes like document, page collection, page, canvas, shape, bookmark, annotation, field, etc. The focus of the development team is always to ease the task of integrating our class library into a larger application. Fill text fields, checkboxes, radio buttons, etc., and save the form either editable or flattened with the PDFKit.NET 5.0. With PDFKit.NET 5.0 you can populate and consume dynamic XFA documents with the new XFA processor API. Extract all graphics on a page as a collection of shapes with PDFKit 5.0. Shapes can be text, images, and curves.Starting Price: $990 per year -
25
PDFMonkey
PDFMonkey
PDFMonkey is the solution to handle your PDF generation needs. Web technologies, a simple REST API, it's never been so easy to make beautiful documents. Stop wasting time! Save development time, no more PDF building code to write, no more configuration, no dependency hell. We handle all the complexity for you.Starting Price: €15 per month -
26
Paperplane
Paperplane
Installing and maintaining a PDF backend is tedious and time-consuming. Paperplane adds PDF functionality to your app fast, so you can move on to what matters. If you have batch workloads, Paperplane will create up to 20 PDFs in parallel. Allowing you more time to improve your workflow and pump out more PDFs. The API is asynchronous too, meaning you can fire and forget your PDF jobs rather than keeping long-running processes around until everything finishes. Webhooks take care of notifying you of any errors that may have occurred during the PDF generation process. Are you looking for a solution to generate PDFs from your single-page app? If your site works in Chrome, it’ll work with Paperplane. Or choose to wait for an element to appear on the page before generating the PDF, so you can be sure all your content has loaded.Starting Price: $15 per month -
27
OneSimpleApi
OneSimpleApi
A toolbox with all the things you need to get your project to success: Image resize and CDN, PDF and Screenshots generation, Currency Exchange and Discounts, Email Validation, QR codes, and much more! Our color generator allows you to create a unique color based on a text, transform colors between HEX, RGB and HSL, and obtain Color palettes based on an initial color, or text! Image manipulation doesn't have to be hard. This API makes it super simple to adapt your images and then deliver them using a Content Delivery Network. Calculate readability scores, reading time estimates and sentiment scores with ease for all your texts. Generate perfect QR codes images or vectors. 100% customizable and effortless. Use it to promote an event, give a discount, or share a link. Obtain a Spotify Profile details, including their name, followers, popularity, picture, monthly listeners, biography, social media links, top songs, and top listeners locations.Starting Price: $19 per month -
28
WebPDF
SC Dailydriven United SRL
WebPDF is an online service that provides an easy an accessible way to alter PDF files. You can do any of the following operations using the web interface, but there's also a developer friendly API that you can integrate into your own application: Merge multiple PDFs Split PDF Compress PDF Extract PDF metadata Flatten PDF forms Extract images from PDF Extract text from PDF Lock & Unlock PDF OCR PDF Change PDF size Change PDF version Watermark PDF Optimize PDF for web Rescale PDF There are many other tools not mentioned here and lots more to be released. You can try WebPDF for free, even without an account.Starting Price: $4/month -
29
GrapeCity Documents
GrapeCity
Take total control of your documents with ultra-fast, low-footprint APIs for enterprise apps. Generate, load, edit, save XLSX spreadsheets, PDF, Images, and DOCX files using C# .NET, VB.NET, or Java. View, edit, print, fill and submit documents in JavaScript PDF Viewer and PDF Editor. Compatible on Windows, macOS, and Linux. No dependencies on Excel, Word, or Acrobat. Deploy to a variety of cloud-based services, including Azure, AWS, and AWS Lambda. Product available individually or as a bundle. The .NET 6 Document API is designed to generate large, optimized documents fast, while remaining lightweight and extensible, giving you greater flexibility, and creativity in developing your applications. Develop for any .NET platform or major operating system with a single code base. Use in your apps for .NET, C#, VB.NET .NET Framework, Mono, Xamarin.iOS, and Xamarin.Android.Starting Price: $799 per year -
30
Gendoc
Gendoc
Automatically generate beautiful PDF documents from templates for Sales (proposals, invoices), Marketing (whitepapers, presentations, …), and more (such as custom reports) with Gendoc. Integrate PDF generation direct in your product, in your CRM, or in your IT stack and create beautiful PDF documents for all of your customers thanks to our powerful HTML to PDF conversion API. Create templates,Starting Price: $0.10 per document generated