Audio & video · ONLINE TOOL

Video converter

Convert MOV, MKV, AVI, WebM, WMV, FLV and other videos locally to MP4 or WebM.

Local processingNo account required

USE CASES

When to use Video converter?

Convert a local video to MP4/H.264 or WebM/VP9 by choosing the format for its intended use, with source preview and an output summary before re-encoding.

MOV, MKV or AVI to MP4 for general use
MP4 to WebM for web delivery
Standardize video format before sharing

CONCRETE EXAMPLE

MOV → MP4

BEFORE

clip.mov · source preview and details

→

AFTER

clip_video-convert.mp4 · H.264/AAC · size measured after conversion

PRIVACY

Your data stays in the browser

Processed content is not uploaded to WorkToolset. Required libraries may be loaded by the site, but the file stays in the browser.

GOOD TO KNOW

Limitations to know

The FFmpeg/WASM engine (~31 MB) is downloaded on first use and re-encoding can be slow for large files.
The browser may be unable to preview some source codecs even when FFmpeg can convert them.
Lossy conversion cannot restore missing detail and final size may be smaller or larger.

HOW IT WORKS

A straightforward workflow.

1Prepare the required input and choose useful options.
2Review previews, warnings and limitations before export.
3Download a new copy or report: the original stays unchanged.

PRIVACY

Frequently asked questions

Are my files uploaded to WorkToolset?

No. This tool runs locally in your browser.

Is my original file modified?

No. WorkToolset creates a new copy or export.

Do I need an account?

No for this free tool. Accounts are mainly used for favorites, presets and future workflows.