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.
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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.
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The PDF Maker
If you're looking to auto-generate contracts, invoices, certificates, or client-facing documents from your CRM or form data, The PDF Maker is exactly what you need.
It connects with platforms like HubSpot, Salesforce, Google Sheets, and Airtable to pull information and turn it into ready-to-send documents.
You can map fields, apply conditions, and use templates to build documents at scale—without manual work.
For developers, our API makes it easy to add PDF generation directly into your workflows and tools.
This is ideal for sales, HR, operations, and admin teams that deal with repetitive paperwork and want a faster, more accurate process.
The PDF Maker improves productivity, reduces errors, and ensures consistency across documents.
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Adobe PDF Library SDK
Adobe PDF Library is the only commercial PDF SDK built on Adobe Acrobat's own core engine, delivering the same rendering accuracy, PDF spec coverage, and behavior as Acrobat itself.
Available in Modern C++, Adobe C/C++, .NET, .NET Framework, and Java, and supported on Windows, macOS, and Linux. Create, edit, merge, split, annotate, and watermark PDFs programmatically; convert to and from Word, Excel, PowerPoint, PDF/A, PDF/X, and more; add OCR, digital signatures, redaction, and encryption; and process AcroForms and XFA forms.
SOC 2 Type 2 compliant, with a 91% customer retention rate among enterprise users.
For enterprise deployment, the pdfRest API Toolkit Container packages this technology as a self hosted REST API for on premises, private cloud, or hybrid environments.
Datalogics also offers Scout, an AI assistant, and an MCP server so teams can bring PDF capabilities into AI powered workflows.
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