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Free YouTube video editor (no watermark)
Edit long-form YouTube videos and YouTube Shorts in your browser, make the thumbnail, add captions, and upload straight to your channel. Free, with no watermark.
YouTube video sizes
| Format | Aspect ratio | Recommended size |
|---|---|---|
| YouTube video | 16:9 | 1920 × 1080 (or 3840 × 2160 for 4K) |
| YouTube Shorts | 9:16 | 1080 × 1920 |
Why creators use Lumnexvideoeditor for YouTube
Thumbnail maker
Pick a frame or upload a photo, add a bold title, and download a 1280 × 720 JPG ready for YouTube Studio.
Auto captions
Turn your speech into subtitles on your device, in English, Urdu, Hindi and more, then edit any line.
Direct upload
Connect your channel and publish as private, unlisted or public, with title, description and tags.
Shorts in one click
Switch the canvas to 9:16, or export a Shorts version of a 16:9 edit with a blurred background.
Social stickers
Subscribe, Like and bell buttons, lower thirds and arrows to boost engagement.
Clean sound
Noise reduction and voice enhancer for talking-head videos, plus voice-over recording.
How to edit a YouTube video for free
- Import your footage. Open the editor and drop your clips in. The first clip sets the canvas to its own shape.
- Edit on the timeline. Split with S, trim the edges, add titles, transitions, music and captions.
- Make a thumbnail. Use the Thumbnail row above the timeline to design and download your cover.
- Export or publish. Click Export and choose 1080p or 4K, or Connect & Publish to YouTube.
Everything included, free
Multi-track timeline · split & trim · speed curves · reverse · freeze frame · crop, rotate, mirror · 60 filters & LUT import · 57 transitions · 60 effects · text styles & animations · 900+ stickers & emojis · green screen · voice-over · noise reduction · auto captions · text-to-speech · thumbnail maker · MP4 export up to 4K. See all features.
Frequently asked questions
What size should a YouTube video be?
Standard YouTube videos are 16:9; 1920 × 1080 is the most common size and 3840 × 2160 for 4K. Shorts are vertical 9:16 at 1080 × 1920.
Can I edit YouTube Shorts here?
Yes. Choose the 9:16 canvas, or use Export → YouTube → Shorts 9:16. The editor adds #Shorts to the title when you publish directly.
Can I upload directly to my YouTube channel?
Yes, once the site owner has enabled it: connect your Google account in the Export dialog and publish. Otherwise download the MP4 and upload it in YouTube Studio.
Will my video have a watermark?
No. Exports never have a watermark or intro.
Is Lumnexvideoeditor free?
Yes. Every tool is free, exported videos have no watermark, and no account is needed.
Are my videos uploaded to a server?
No. Editing and export happen inside your browser on your own device. Your files stay private.
Start editing now
Lumnexvideoeditor runs in your browser on Windows, Mac, Chromebook, Android and iPhone. Nothing to install, nothing uploaded.