✨ Gonify Middleware for Go Frameworks ⚡

December 5, 2025 · View on GitHub

A middleware for multiple Go frameworks that automatically minifies HTTP responses before sending them to clients. Powered by the efficient tdewolff/minify/v2 library.

Supports:

Fiber
Gin
Standard Library (net/http)
Chi (via net/http compatibility)

🔹 Reduces transferred data size 🔹 Saves bandwidth 🔹 Improves page load times

🚀 Features

✅ Automatic minification for HTML, CSS, JS, JSON, XML, and SVG responses
⚙️ Easy configuration to enable/disable specific minification types
⏭️ Next option to skip middleware for specific routes/conditions
🛡️ Safe error handling - original response sent if minification fails

📦 Installation

go get github.com/NarmadaWeb/gonify/v3

🛠️ Usage

Fiber

package main

import (
	"log"

	"github.com/gofiber/fiber/v3"
	"github.com/NarmadaWeb/gonify/v3"
)

func main() {
	app := fiber.New()

	// Use gonify middleware
	app.Use(gonify.New(gonify.Config{
		MinifyHTML: true,
	}))

	app.Get("/", func(c fiber.Ctx) error {
		c.Set("Content-Type", "text/html")
		return c.SendString("<html><body><h1>Hello, Minified World!</h1></body></html>")
	})

	log.Fatal(app.Listen(":3000"))
}

Gin

package main

import (
	"net/http"
	"github.com/gin-gonic/gin"
	"github.com/NarmadaWeb/gonify/v3"
)

func main() {
	r := gin.New()

	// Use gonify middleware
	r.Use(gonify.NewGin(gonify.GinConfig{
		Settings: gonify.Settings{MinifyHTML: true},
	}))

	r.GET("/", func(c *gin.Context) {
		c.Data(http.StatusOK, "text/html", []byte("<html><body><h1>Hello, Minified World!</h1></body></html>"))
	})

	r.Run(":3000")
}

Standard Library / Chi

package main

import (
	"net/http"
	"github.com/NarmadaWeb/gonify/v3"
)

func main() {
	mux := http.NewServeMux()

	mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
		w.Header().Set("Content-Type", "text/html")
		w.Write([]byte("<html><body><h1>Hello, Minified World!</h1></body></html>"))
	})

	// Wrap the mux with gonify
	handler := gonify.NewHandler(gonify.HTTPConfig{
		Settings: gonify.Settings{MinifyHTML: true},
	})(mux)

	http.ListenAndServe(":3000", handler)
}

⚙️ Configuration

The Settings struct is shared across all frameworks:

type Settings struct {
	SuppressWarnings bool // Default: false
	MinifyHTML       bool // Default: true
	MinifyCSS        bool // Default: true
	MinifyJS         bool // Default: true
	MinifyJSON       bool // Default: false
	MinifyXML        bool // Default: false
	MinifySVG        bool // Default: false
}

Framework specific configs (e.g. Config, GinConfig, HTTPConfig) embed Settings and add a Next function for conditional skipping.

🤝 Contributing

Contributions are always welcome! Fork the repository, create a feature branch, and submit a Pull Request.

📜 License

This package is licensed under the MIT License.