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MP4 to WebM

Convert an MP4 to a smaller VP9 WebM for the web — in your browser.

Pilih fail video

MP4, MOV — converted to VP9 / Opus WebM in your browser

Klik untuk memilih, atau lepaskan fail di sini

Cara MP4 to WebM

  1. 1

    Add your MP4

    Drop in the .mp4 or .mov file — it's read in your browser.

  2. 2

    Convert

    Click Convert to WebM; the video is re-encoded as VP9/Opus with the WebCodecs API.

  3. 3

    Download

    Save the WebM — smaller than the MP4 and ideal for websites.

Related PDF tools

Compress VideonewShrink an MP4, MOV or WebM by re-encoding it at a lower bitrate — in your browser, nothing uploaded.WebM to MP4newConvert a WebM video to an H.264 MP4 that plays everywhere — in your browser.Video to GIFnewTurn a short video clip (MP4, MOV, WebM) into an animated GIF — in your browser.Trim VideonewCut a video down to just the part you want, in your browser.

MP4 to WebM — soalan lazim

Is my file uploaded?+

No. The MP4 is decoded and re-encoded to WebM entirely in your browser with the WebCodecs API.

Why convert MP4 to WebM?+

VP9 WebM is typically 20–40% smaller than H.264 at the same quality and is well suited to websites and open-source workflows.

Does WebM play everywhere?+

It plays in every modern desktop and Android browser, but not natively on iOS Safari or in many video editors — keep an MP4 too if you need those.

Which browsers work?+

Chrome, Edge and Safari 17+ can decode the MP4 and encode VP9.

Adakah anda memuat naik fail saya ke pelayan?+

Tidak — setiap alat di sini memproses fail anda sepenuhnya pada peranti anda, dan tiada apa dimuat naik ke pelayan. Satu-satunya pengecualian ialah alat AI, yang menghantar teks yang diekstrak (bukan fail) ke Claude untuk melakukan kerjanya.

Adakah terdapat had saiz fail?+

Kami tidak mengenakan had buatan, tetapi kerana pemprosesan berlaku dalam pelayar anda, fail yang sangat besar (500+ MB atau 1,000+ muka surat) dihadkan oleh memori peranti anda, bukan oleh kami.