Does it preserve , and ?

Yes. Whitespace inside these tags is meaningful, so it's left intact. Same for and bodies.

Is the output still valid HTML?

Yes for the default options - we only remove whitespace where it can't change rendering. With 'remove optional tags' on, the output is more compact but relies on HTML5's optional-element rules, so be sure your parser is HTML5-compliant.

HTML-Minifier

Whitespace, Kommentare und Anführungszeichen aus HTML entfernen - mit Vorher/Nachher-Bericht im Browser.

Läuft in deinem Browser

HTML einfügen, minifizierte Version erhalten - mit Byte-Anzahl und Prozent-Ersparnis. Kommentare und Whitespace standardmässig entfernt.

Kommentare entfernenAttribut-Anführungszeichen entfernenVorher 220B → Nachher 162B (26% gespart)

Eingabe

Ausgabe

<!DOCTYPE html><html><head><title>Hello</title></head><body><h1 class="greeting">Hello world</h1> <pre>
  this whitespace
  is preserved
    </pre> </body></html>

So funktioniert's

Paste your HTML
Any HTML5 fragment or full document.
Pick aggressiveness
Default trims whitespace + comments. Aggressive also strips redundant quotes and optional tags.
Copy the minified output
Before/after byte counts shown next to the output.

Was ist das?

An HTML minifier shaves bytes off an HTML document by removing whitespace and comments that don't affect rendering. The wins are biggest on hand-authored HTML with generous indentation; framework-generated output is usually already compact. Typical savings: 15-30% on raw HTML before gzip.

Wann verwenden

Inlining HTML into a JSON response or an email template where every byte counts. Hand-optimising a critical-path page after a Lighthouse audit. Cleaning up exported HTML from a WYSIWYG editor that left a comment on every line.

Häufige Fehler

Running it on Jinja / Handlebars / Vue templates - the minifier doesn't understand template tags, so {{ stuff }} survives but the surrounding whitespace might disappear in unwanted places. Removing comments that the build pipeline actually needs (build-info pragmas, IE conditional comments). And expecting big wins on already-gzipped output - HTML minification stacks with gzip but the gzip pass does most of the heavy lifting.

FAQ

Does it preserve <pre>, <textarea> and <code>?: Yes. Whitespace inside these tags is meaningful, so it's left intact. Same for <script> and <style> bodies.
Is the output still valid HTML?: Yes for the default options - we only remove whitespace where it can't change rendering. With 'remove optional tags' on, the output is more compact but relies on HTML5's optional-element rules, so be sure your parser is HTML5-compliant.

XML-Formatter

XML hübsch formatieren oder minifizieren mit sauberer Einrückung - im Browser.

HTML-Entity-Encoder / -Decoder

Benannte und numerische HTML-Entities kodieren und dekodieren.

JSON-Formatierer & Validator

JSON sofort formatieren, minifizieren und validieren.