Is this WEBM to MOV converter really free?

Yes. Up to 5 files at a time, no signup, no catch. The free tier adds a small watermark to image output — Pro ($9.99/mo or $49/yr) removes it, raises the file size limit to 500 MB, and unlocks unlimited batch conversion.

Are my files uploaded to a server?

No — and you can verify it yourself. Open DevTools → Network tab, then convert a file. You'll see zero upload requests. Everything runs right in your browser. We never see your files.

How long does conversion take?

Usually 1–3 seconds for a typical file. The very first conversion on a fresh page load may take 5–20 seconds while the converter engine loads — after that it's instant. Your CPU does all the work locally.

What is the file size limit?

Free: up to 10 MB per file, 5 files per batch. Pro: up to 500 MB per file, unlimited batch. If you're working with large videos or RAW photos, Pro is built for that.

Can I batch convert multiple WEBM files at once?

Yes — drop multiple files at once (or Ctrl/Cmd+click to select them) and they all convert in parallel. Free accounts handle up to 5 files per batch; Pro has no limit.

How large can my video files be?

Free accounts support files up to 10 MB — enough for short clips and GIFs. Pro raises that to 500 MB, which covers most 1080p videos. For files over 1 GB, a native app like HandBrake will be faster.

Will the video lose quality during conversion?

When only the container changes (e.g., MKV → MP4 where both use H.264), there's zero quality loss — it's a lossless rewrap. When the codec changes, we encode at CRF 23, which is near-transparent for most content.

Why can't Final Cut Pro or iMovie open WebM files?

Apple's video tools don't include a WebM decoder. MOV with H.264 is Apple's native video format and is immediately importable into Final Cut Pro, iMovie, and QuickTime Player without plugins.

Will the MOV output be compatible with older Mac software?

Yes — the converter outputs H.264 in MOV, which is compatible with macOS versions going back many years and with all versions of iMovie and Final Cut Pro.

How private is this converter?

Completely private — by design, not policy. There is no upload endpoint. Files are processed right inside your browser tab and disappear the moment you close it. We collect only anonymous page-view counts; your file content is never seen or stored.

WebM to MOV Converter — Free, Online, No Upload

How to convert WEBM to MOV online

1
Drop your WEBM file
Drag and drop your WebM Video Format file onto the converter, or click to browse your files. You can select up to 5 at once. Nothing leaves your device — conversion happens right here in the browser.
2
Hit Convert — it happens locally
Click Convert and watch it go. There's no upload, no server queue, no waiting. The converter runs WebM Video Format → QuickTime Movie entirely in your browser tab. Most files finish in 1–3 seconds.
3
Download your MOV
Your QuickTime Movie file is ready. Click Download, or grab a ZIP if you converted a batch. Close the tab and everything disappears — no copies kept anywhere.

WEBM vs MOV: format overview

WEBM

WebM Video Format

Google (On2 Technologies) · 2010

Compression: lossy
Transparency: No

✓ Royalty-free codec (VP8/VP9/AV1)
✓ Excellent web streaming support
✗ Not supported on iOS/Safari natively

MOV

QuickTime Movie

Apple · 1991

Compression: lossy
Transparency: No

✓ High quality, preferred by Apple ecosystem
✓ Supports ProRes codec for editing

WEBM magic bytes: 1A 45 DF A3

MOV magic bytes: 00 00 00 xx 66 74 79 70 71 74

Why convert WEBM to MOV?

WebM was engineered for the open web — it streams without issues in Chrome, Firefox, and Edge and is ideal for HTML5 video. But the moment you bring a WebM file into a Mac-based creative workflow, the format becomes a wall. Final Cut Pro does not import WebM. iMovie cannot open it. QuickTime Player on macOS has no WebM decoder. Any web recording, video download, or conference export in WebM format is locked out of Apple's video editing ecosystem entirely.

MOV is Apple's QuickTime container format and the native input for Final Cut Pro, iMovie, QuickTime Player, and every Apple video tool. It supports H.264 and HEVC video with AAC audio — the codec combination that the entire Mac creative ecosystem is built around. Files in MOV format open instantly in every Apple application without any additional codec installation.

Converting WebM to MOV re-encodes the VP8 or VP9 video as H.264 inside a QuickTime container, making it immediately editable on any Mac. The audio is converted from Opus or Vorbis to AAC. Re-encoding introduces some quality reduction — use the highest quality setting available if you plan to do significant editing afterwards. MOV files are typically larger than equivalent WebM files but far more compatible with professional Mac workflows. This is the standard path from browser-captured video to Final Cut Pro or iMovie.

Quality & file size: WEBM to MOV

Typical file sizes: WEBM 50–200 MB → MOV 150–500 MB.

Both WEBM and MOV use lossy compression. We transcode at high quality settings (equivalent to MOV's recommended web quality) to minimize generational loss.

Color depth: WEBM supports standard color, MOV supports standard color.

Transparency: WEBM does not support transparency. MOV does not support transparency — transparent areas become solid white.

Frequently asked questions

Privacy: how FormatDrop handles your files

Your WEBMfiles are converted 100% inside your browser. They are never uploaded to our servers, never stored, and never seen by anyone other than you. This isn't a privacy policy claim — it's an architectural guarantee: our server has no endpoint that receives file bytes.