Is go-wkhtmltopdf still a good choice for new projects?

Due to wkhtmltopdf being archived and unmaintained, it's not recommended for new projects seeking long-term support. The README advises looking for alternatives, though the Go wrapper itself is still maintained.

How to generate PDF from an HTML string in Go using go-wkhtmltopdf?

Use NewPageReader with an io.Reader like strings.NewReader to pass HTML content via stdin. The README provides a snippet showing html := " Hi " and pdfgen.AddPage(NewPageReader(strings.NewReader(html))).

go-wkhtmltopdf vs chromedp for PDF generation in Go

go-wkhtmltopdf wraps a deprecated command-line tool with type safety but limited modern web support, while chromedp uses Chrome DevTools for better rendering of JavaScript and CSS but is more complex and resource-intensive. Choose based on maintenance needs and feature requirements.

Can I use go-wkhtmltopdf without installing wkhtmltopdf?

No, wkhtmltopdf must be installed separately as the library is a wrapper. The README details path resolution from current dir, PATH, or WKHTMLTOPDF_PATH environment variable, with SetPath() for runtime changes.

How to handle large PDF files with go-wkhtmltopdf to avoid memory issues?

Use the SetOutput method to pass a custom io.Writer for direct streaming to disk or other storage, bypassing the internal buffer. The README mentions this option for large files to manage memory efficiently.

Does go-wkhtmltopdf support CSS paged media for print layouts?

It depends on wkhtmltopdf's capabilities, which include some print media support but may not cover all modern CSS features. The README notes using CSS print media types and millimeter units for accurate PDFs, but limitations exist due to the underlying tool.

go-wkhtmltopdf — Go HTML to PDF Wrapper

What is go-wkhtmltopdf?

go-wkhtmltopdf is a Go wrapper for the wkhtmltopdf command-line tool, allowing developers to generate PDF documents from HTML/CSS templates directly within Go applications. It solves the need for creating customizable, print-ready documents like invoices and reports by leveraging HTML's styling capabilities. The library provides a type-safe, idiomatic Go API that simplifies wkhtmltopdf's extensive options.

Target Audience

Go developers who need to generate PDFs from HTML in server-side applications, such as web services generating invoices, reports, or other printable documents.

Value Proposition

Developers choose go-wkhtmltopdf for its type-safe interface that reduces errors and enhances IDE support, its flexibility in handling multiple HTML sources, and its JSON serialization feature for distributed PDF generation workflows.

Golang commandline wrapper for wkhtmltopdf

Use Cases

Best For

Generating invoices with custom HTML/CSS layouts in Go web applications
Creating printable reports with tables and graphs from HTML templates
Building server-side PDF generation services that combine multiple HTML sources
Implementing PDF workflows where configuration needs to be serialized (e.g., client-server architectures)
Migrating existing wkhtmltopdf usage to a type-safe Go environment
Developing on AWS Lambda with PDF generation via JSON configuration

Not Ideal For

Projects starting from scratch that require a future-proof, actively maintained PDF generation solution
Applications needing support for modern CSS features or complex JavaScript rendering beyond wkhtmltopdf's capabilities
Environments where installing and managing external binary dependencies (wkhtmltopdf) is restricted or cumbersome
High-throughput systems demanding faster PDF generation than wkhtmltopdf's rendering engine can provide

Pros & Cons

Pros

Type-Safe Configuration

All wkhtmltopdf settings are exposed as typed struct fields, ensuring compile-time safety and IDE autocompletion, as demonstrated in the code examples for Dpi, PageSize, and other options.

Flexible HTML Input

Supports combining HTML from URLs, local files, or in-memory readers via stdin, allowing versatile document assembly in a single PDF, as shown with NewPage and NewPageReader.

Serialization for Distributed Workflows

Configurations can be saved and loaded as JSON, enabling client-server setups or AWS Lambda integration, with examples provided for NewPDFPreparer and NewPDFGeneratorFromJSON.

Cons

Deprecated Underlying Tool

Relies on wkhtmltopdf, which is archived and no longer maintained, meaning no updates, security fixes, or compatibility with new web standards, as explicitly warned in the README.

External Binary Dependency

Requires wkhtmltopdf to be installed separately on the system, adding deployment complexity and potential versioning issues, with path resolution noted as a setup step.

Performance Tied to wkhtmltopdf

Speed is limited by wkhtmltopdf's rendering engine, which may not be optimal for high-volume or real-time generation compared to native Go libraries or headless browsers.

Frequently Asked Questions

What is go-wkhtmltopdf?

Target Audience

Go developers who need to generate PDFs from HTML in server-side applications, such as web services generating invoices, reports, or other printable documents.

Value Proposition

Use Cases

Best For

Generating invoices with custom HTML/CSS layouts in Go web applications
Creating printable reports with tables and graphs from HTML templates
Building server-side PDF generation services that combine multiple HTML sources
Implementing PDF workflows where configuration needs to be serialized (e.g., client-server architectures)
Migrating existing wkhtmltopdf usage to a type-safe Go environment
Developing on AWS Lambda with PDF generation via JSON configuration

Not Ideal For

Projects starting from scratch that require a future-proof, actively maintained PDF generation solution
Applications needing support for modern CSS features or complex JavaScript rendering beyond wkhtmltopdf's capabilities
Environments where installing and managing external binary dependencies (wkhtmltopdf) is restricted or cumbersome
High-throughput systems demanding faster PDF generation than wkhtmltopdf's rendering engine can provide

Pros & Cons

Pros

Type-Safe Configuration

All wkhtmltopdf settings are exposed as typed struct fields, ensuring compile-time safety and IDE autocompletion, as demonstrated in the code examples for Dpi, PageSize, and other options.

Flexible HTML Input

Supports combining HTML from URLs, local files, or in-memory readers via stdin, allowing versatile document assembly in a single PDF, as shown with NewPage and NewPageReader.

Serialization for Distributed Workflows

Configurations can be saved and loaded as JSON, enabling client-server setups or AWS Lambda integration, with examples provided for NewPDFPreparer and NewPDFGeneratorFromJSON.

Cons

Deprecated Underlying Tool

Relies on wkhtmltopdf, which is archived and no longer maintained, meaning no updates, security fixes, or compatibility with new web standards, as explicitly warned in the README.

External Binary Dependency

Requires wkhtmltopdf to be installed separately on the system, adding deployment complexity and potential versioning issues, with path resolution noted as a setup step.

Performance Tied to wkhtmltopdf

Speed is limited by wkhtmltopdf's rendering engine, which may not be optimal for high-volume or real-time generation compared to native Go libraries or headless browsers.

Frequently Asked Questions

go-wkhtmltopdf

What is go-wkhtmltopdf?

Overview

Use Cases

Best For

Not Ideal For

Pros & Cons

Pros

Cons

Frequently Asked Questions

Related Projects

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go-wkhtmltopdf

What is go-wkhtmltopdf?

Overview

Use Cases

Best For

Not Ideal For

Pros & Cons

Pros

Cons

Frequently Asked Questions

Related Projects

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