Is picoWebm free to use?

Yes, picoWebm is a 100% free video conversion tool. There are no hidden fees, no subscriptions, and it will never add a watermark to your exported videos.

Do I have to upload my video to a server?

No. picoWebm uses the modern WebCodecs API to process your video entirely locally within your browser. Your files never leave your device, ensuring complete privacy and zero upload wait times.

What video formats does picoWebm support?

picoWebm accepts almost all standard video formats including MP4, WebM, MOV, MKV, and AVI. You can export your trimmed and cropped videos as either an optimized WebM or an H.264 MP4 file.

How do I convert an MP4 to WebM?

Simply drag and drop your MP4 file into picoWebm, set your desired crop, trim, and resolution settings, select 'WebM' as the export format, and click Generate. The conversion happens instantly in your browser.

picoWebm is a free, local, browser-based video converter. To convert MP4 to WebM, crop videos, or trim MP4 files without server uploads, please enable JavaScript.

Free WebM & MP4 Converter.

Fast, private, and 100% local. Your file never leaves your device.

Click or drag video here

Supports MP4, WebM, MOV, AVI, MKV & more

Trim Time 0.0s / 0.0s

Start Time (s) End Time (s)

Resolution & Fit

Presets

Width

Height

Scale Mode

Settings

Mute Audio

Speed

Quality

Free WebM & MP4 Converter.

Free Browser Video Converter

No Watermarks