How to convert a video on Android without installing an app
Chrome on Android can run WebM to MP4 entirely on-device. Here's the exact flow for videos on a phone.
One reason people install third-party apps on their phone is that they don't realise the same tool runs perfectly in mobile browsers. WebM to MP4 is browser-only — no app store, no install — and it works exactly the same on Android as it does on a laptop.
Run it in your browser: WebM to MP4 — Runs entirely on your device using open web standards.
Step-by-step on Android
- Open Chrome and navigate to WebM to MP4.
- Tap "Choose file" or use Chrome's built-in file picker.
- Pick the video from Photos, Downloads, Google Drive, or any other connected location.
- Adjust the options for WebM to MP4 and start processing.
- Save the output — Chrome puts it in your Downloads folder by default.
- Share via any app — long-press the file in your file manager or use the Downloads menu.
Useful Android-specific tricks
- Install WebM to MP4 as a PWA — Chrome will offer "Add to home screen" once you've used the page a couple of times. The icon behaves like a native app.
- Direct share from any app — most file managers and gallery apps let you "Open with Chrome", which sends the file straight into WebM to MP4.
- Background-tab caveat — older Android phones may pause heavy processing if Chrome goes to the background. Keep the tab visible for big files.
Open the tool
No upload, no signup, no daily limit.
Why a browser tool beats most native apps for this
Native apps that convert videos are almost all just wrappers around browser-class libraries. They usually upload your file to their server, which is slower, less private, and sometimes paywalled. WebM to MP4 does the work directly in your phone's browser engine — same code path that would run if you were on a desktop, no upload, no signup, no daily limit.
Frequently asked questions
Does WebM to MP4 work offline on Android?
Once the page is loaded in your browser, yes — closing your network connection mid-job won't interrupt processing because nothing is being uploaded.
Can WebM to MP4 access my Google Photos?
Only when you pick a file through the standard system file-picker. The browser sandbox prevents any app — including WebM to MP4 — from reading your library without an explicit selection.
Why isn't there a "WebM to MP4" app on the Play Store?
Because there doesn't need to be. Mobile browsers run the same WebAssembly the desktop site uses. Shipping a native app would mean maintaining two codebases for the same feature.
Will processing drain my battery?
Heavy video work uses your phone's CPU just like any other intensive app. For most videos the job finishes in seconds; a 100MB video might use a noticeable but small slice of battery.
Related guides
- How to convert a video in 2026 — what changed and what didn't
- Compress a video to under 100KB (the toughest size target)
- How to convert 50+ videos at once
- A free browser-based way to convert a video
- Discount Calculator on Android — works in Chrome
- JSON Formatter on Android Chrome
Ready to try it?
Use the tool: WebM to MP4. Runs entirely on your device using open web standards.
Last reviewed May 2026. File-size limits, portal requirements, and software defaults change over time — always verify with the destination platform before uploading time-sensitive documents. References to third-party services and products are for descriptive purposes only and do not imply any partnership or endorsement.