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WebM to text

Browser and screen recordings — as text in seconds.

Drop a WebM file .webm

First 2 minutes free, any lengthLanguage detected automaticallyAudio or video

Longer than 2 minutes?You get the first 2 minutes here. Kalpa transcribes the rest — free to start on iPhone Get the app ›

How do you convert a WebM file to text?

To convert a WebM file to text, drop the .webm above — audio-only or video. WebM is the format many browser-based recorders, screen recorders and web apps save. Kalpa transcribes its audio and returns text with timestamps. The first 2 minutes of any WebM are free here; the rest of a longer recording is in Kalpa.

Short ones here, long ones in Kalpa

First 2 min · free herescreen-capture.webm1:28English · detected

0:00: So this is the bug I mentioned in the standup.
0:13: When I click save twice, the form submits two copies.
0:38: It only happens on a slow connection, see the spinner here.
1:10: The steps to reproduce are in the ticket.

Keep it, search it, ask about it laterSave to Kalpa ›

How to transcribe WebM

Find the file
From a browser recorder or web app.
Drop it above
Audio or video WebM.
Get the text
Timestamps included.
Long files
The first 2 minutes are here; the rest is in Kalpa.

Faster in the app

Browser recordings, turned into notes

Quick walkthroughs and voice clips recorded in the browser often end up as WebM files not every player opens. Turn them into text you can paste into a doc or ticket.

Download on the App Store

Good to know

Some WebM files have no audio track — check before uploading.
Browser recordings can have echo; headphones help.
The first 2 minutes of any WebM are free here; the rest is in Kalpa.

Where WebM files come from

Browser recorders

Quick voice notes in the browser.

Screen recorders

Walkthroughs from web tools.

Web apps

Clips recorded in web-based chat and meeting tools.

When the free tool is enough — and when you need Kalpa

	Free web tool	Kalpa app
Length	First 2 minutes of any recording	The whole recording, no limit
Summary, quotes and topics	—	Yes
Search everything you saved	—	Ask in chat, jump to the moment
Your own recordings	Upload a file	Record on iPhone or Apple Watch, transcribed on device
Languages	25, detected automatically	25, detected automatically

Questions and answers

Can I transcribe an audio-only WebM?

Yes, the WebM to text tool works with both audio-only and video WebM files.

Why did my recording save as WebM?

Many browser-based recorders and web apps save recordings as WebM, so the format is common for anything captured in a browser.

What if my WebM has no audio track?

A WebM without an audio track has no speech to transcribe, so check that the recording captured your mic.

How large can a WebM file be?

The WebM to text tool accepts files up to 100 MB.

Is a long WebM free to transcribe?

Kalpa transcribes the first 2 minutes of any WebM for free; the rest of a longer recording is in the Kalpa app, which is free to start.

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Everything you hear and say, remembered

Kalpa keeps what you watch, say and think in one place you can talk to. Free to start on iPhone and Apple Watch.