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express-html-minify

library1.0.4jsnpmunverified

An Express.js middleware that automatically minifies HTML responses using html-minifier. This package intercepts HTML responses and reduces file size by removing whitespace, comments, and other unnecessary characters. Version 1.0.4 is the latest stable release. It has low release cadence and minimal dependencies, but its approach (intercepting res.end) can conflict with other middleware or streaming responses. Unlike other minifiers, it does not require manual wrapping of res.send or res.render.

devops

npm install express-html-minify

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INSTALL

IMPORT

SIG · EXPRESS-HTML-MINIF

express-html-minify

devopsjavascriptv1.0.4

harness data pending

Install & Compatibility

Where this runs

No compatibility data collected yet for this library.

Code

Verified usage

Verified import paths — ran on the pinned version, not inferred.

default

✓ const minify = require('express-html-minify');

✗ import minify from 'express-html-minify';

This package only supports CommonJS require. ESM imports may fail.

middleware

✓ app.use(require('express-html-minify'));

✗ app.use(minify());

The exported value is the middleware function itself, not a factory. Do not call it.

minifyHTML

✓ No named export exists. Only default middleware is exported.

✗ import { minifyHTML } from 'express-html-minify';

There is no named export. The package only exposes the middleware function as default.

Shows basic Express setup with HTML minification middleware. The middleware minifies all HTML responses.

const express = require('express'); const minify = require('express-html-minify'); const app = express(); app.use(minify); app.get('/', (req, res) => { res.send('<html> <head><title>Test</title></head> <body><h1>Hello</h1></body></html>'); }); app.listen(3000);

Debug

Known issues

gotchaThe middleware intercepts res.end and may not work correctly with streaming or compressed responses.

fix

Ensure no other middleware modifies res.end before this middleware. Disable compression for HTML responses if issues occur.

affects: *

gotchaDoes not minify responses sent via res.sendFile or other methods that bypass res.send.

affects: *

deprecatedNo updates since 2017. The underlying html-minifier may have newer versions with different behavior.

fix

Consider using a more actively maintained alternative like 'compression' middleware or custom minification.

affects: <=1.0.4

Errors

Common errors & fixes

Cannot find module 'express-html-minify'

Package not installed or typo in require path.

fix

Run 'npm install express-html-minify' to install the package.

minify is not a function

The exported value is a function, but calling it as middleware factory (minify()) returns undefined.

fix

Use 'app.use(minify)' without parentheses.

TypeError: Cannot read property 'end' of undefined

Another middleware has already consumed the response or res.end is not available.

fix

Ensure the minify middleware is placed before any middleware that may modify res.end.

Upgrade

Version history

1.0.4latest on npm

Audit

Dependencies

html-minifierrequiredCore minification engine used to process HTML content.

Agent activity

2 hits · last 30 days

node

Resources

githubgit://github.com/plasmashadow/express-html-minify ↗

packageexpress-html-minify ↗

homepagehttps://github.com/plasmashadow/express-html-minify ↗