FormAPI vs OpenPDF vs wkhtmltopdf
Overview
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Detailed Comparison
wkhtmltopdf and wkhtmltoimage are command line tools to render HTML into PDF and various image formats using the QT Webkit rendering engine. These run entirely "headless" and do not require a display or display service. | DocSpring is a service that makes it easy to generate PDFs by posting data to an API. You can upload PDF templates and configure form fields in our web-based template editor. You can also generate PDFs by filling in an online form. | OpenPDF is a free Java library for creating and editing PDF files with a LGPL and MPL open source license. OpenPDF is based on a fork of iText. |
| - | API for filling out PDFs; PDF Template Editor; JSON Schema Validation; Online Forms | - |
Statistics | ||
GitHub Stars 14.4K | GitHub Stars - | GitHub Stars 4.1K |
GitHub Forks 1.9K | GitHub Forks - | GitHub Forks 673 |
Stacks 60 | Stacks 3 | Stacks 3 |
Followers 110 | Followers 10 | Followers 29 |
Votes 0 | Votes 0 | Votes 0 |
Integrations | ||
| No integrations available | ||
What are some alternatives to wkhtmltopdf, DocSpring, OpenPDF?
DocRaptor
DocRaptor makes it easy to convert HTML to PDF and XLS format. Choose your document format, select configuration options and make an HTTP POST request to our server. DocRaptor returns your file in a matter of seconds. We provide extensive documentation and examples to get you started, and our API makes it easy to use DocRaptor to generate PDF and Excel files in your own web applications.
Pandoc
It is a free and open-source document converter, widely used as a writing tool and as a basis for publishing workflows. It converts files from one markup format into another. It can convert documents in (several dialects of) Markdown, reStructuredText, textile, HTML, DocBook, LaTeX, MediaWiki markup, TWiki and many more.
PDFGate
PDFGate is a developer-focused PDF API for generating and managing PDFs from applications. It supports HTML-to-PDF conversion, fillable PDF form fields, and a growing set of PDF utilities designed for backend workflows. The API is built for reliability and precision, making it suitable for invoices, contracts, reports, and other transactional documents. PDFGate emphasizes modern API design, predictable rendering, and features often missing from simpler HTML-to-PDF services, such as native support for interactive form fields. It is designed for teams that need more than basic PDF generation, with a roadmap that includes digital signatures, SDKs, and additional PDF processing endpoints.
Inkfluence AI
Plan, write, and publish books, PDF guides, workbooks, and audiobooks with AI workflows. Customize branding and export instantly.
Pixellize
Fast & free online image converter and editor. Resize, compress, and transform images easily with no sign-up required.
Test
Test
ReelScribe — AI Transcription
Transcribe videos and audio to text instantly with ReelScribe – the fast, accurate, and unlimited AI transcription tool. Convert MP4, MP3, or any video to text and subtitles in 145+ languages. 99.8% accuracy. Download transcripts as DOCX, PDF, TXT, or SRT.
ConvertFT
Free online photo editor and image tools. Batch resize, compress, convert, crop, blur, sharpen, rotate, grayscale, remove EXIF, and more—no installation required.
JPG to WebP Converter
Convert JPG to WebP online free. Modern image format for faster websites. Reduce JPEG file size by 25-35%. Batch convert up to 20 files.
PixelPress — Convert Images to WebP Instantly
PixelPress is a fast, free, and secure online image converter. Convert PNG, JPEG, and AVIF to WebP instantly with 100% client-side processing. No uploads, maximum privacy, lightning-fast results.
