Slimvid

Preset · MP4 to WebM · stays on device

Convert MP4 to WebM Online

Make a web-native WebM from an MP4 for HTML5 pages, Chrome recordings and lightweight embeds.

Rilascia qui i video o clicca per sfogliare

Fino a 1GB ciascuno · MP4, MOV, WebM, MKV, AVI, WMV e oltre 30 altri

Scegli i file

Elaborato in locale nel tuo browser. Non viene caricato nulla.

Settings

Add a video and the settings for this tool appear here.

How it works

  1. 1Drop the .mp4 file.
  2. 2WebM is preselected on this page.
  3. 3Convert and download. Use MP4 instead if you need iPhone playback.

Processed locally in your browser. Nothing is uploaded.

Elaborato in locale nel tuo browser. I file non lasciano mai il tuo dispositivo. Fino a 1GB: per file più grandi c’è l’app desktop.

When WebM is the right container

Some sites, Chrome Web Store listings and HTML5 players still want WebM. An MP4 will play in most browsers; WebM can be smaller with VP8/VP9.

If the source is already VP8/VP9, we remux. H.264 MP4 is transcoded into a WebM the browser can record-style play back.

Safari support for WebM is better than it used to be but still spotty. Keep an MP4 around if you need Apple devices.

What you get

Input
MP4
Output
WebM
Safari
Keep MP4 as a fallback

Tre passaggi

How to convert MP4 to WebM

Nessuna registrazione, nessuna coda di upload, nessuna filigrana. Tutto avviene sul tuo dispositivo.

  1. 1

    Rilascia il file

    Drop the .mp4 file.

  2. 2

    Scegli le impostazioni

    WebM is preselected on this page.

  3. 3

    Scarica

    Convert and download. Use MP4 instead if you need iPhone playback.

Same job, other limits

Related size and platform pages

Convert WebM to MP4 OnlineTurn browser recordings and VP8/VP9 WebM files into MP4 for iPhone, Premiere and chat apps.WebM → MP4Convert MOV to MP4 OnlineTurn iPhone and camera MOV files into an MP4 that actually plays in browsers, Discord and slides.MOV → MP4Convert MKV to MP4 OnlineRemux a downloaded MKV into MP4 so phones, editors and chat apps will play it.MKV → MP4Convert AVI to MP4 OnlineTurn old camera and screen-recorder AVI files into an MP4 that phones and browsers can play.AVI → MP4

Continua

Strumenti correlati

FAQ

MP4 to WebM FAQ

App desktop

File oltre 1GB? Passa al desktop.

La versione browser è perfetta per le clip di tutti i giorni. Quando devi elaborare filmati enormi o decine di file, l’app desktop lo fa più velocemente sul tuo hardware.

Ottieni l’accesso anticipatoConfronta web e desktop
  • Nessun limite di dimensione: 4K, registrazioni di un’ora, qualsiasi cosa
  • Code batch: rilascia una cartella, applica un preset
  • Codifica con accelerazione hardware (H.264 / H.265)
  • Funziona completamente offline, stessa garanzia di privacy