Online Video Editor
Create and edit videos directly in your browser. Add text, crop to any ratio, adjust color, and export — no upload, no watermark, completely free.
Drop your video here
or click to browse · MP4, MOV, WebM, MKV, AVI · JPG, PNG · MP3, WAV
or click to browse · MP4, MOV, WebM, MKV, AVI · JPG, PNG · MP3, WAV
Large videos may take longer — rendering happens in your browser.
Edit Video Online — Add Text, Crop, and Resize for Any Platform
Zolkit's Online Video Editor runs entirely in your browser using WebAssembly. Upload an MP4, MOV, or WebM file, add text overlays, crop to any aspect ratio, adjust brightness and contrast, and export a clean MP4 — all without uploading your video to a server. Your files stay on your device throughout the entire process.
100% Private
All processing happens in your browser via FFmpeg WebAssembly. Your video is never sent to any server.
Free, No Watermark
Export unlimited videos without watermarks, without signing up, and without paying anything.
Text & Adjustments
Add text overlays with custom colors, drag them to position, and adjust brightness, contrast, and saturation.
Resize for Any Platform
Crop and resize to 16:9 for YouTube, 9:16 for TikTok and Reels, 1:1 for Instagram, and more.
Works on Mobile
Use the editor on iPhone, Android, iPad, or desktop — no app to install.
Full-Screen Editor
The editing workspace uses your entire screen for maximum focus, with a preview canvas, properties panel, and timeline.
How to Edit a Video Online
- 1
Upload your video by dragging it onto the page or clicking to browse.
- 2
Select an aspect ratio, add text overlays, and adjust brightness or audio settings.
- 3
Click Export Video, wait for rendering, then download your MP4.
Frequently Asked Questions
Is this online video editor free?
Yes. Zolkit's Online Video Editor is completely free. You can add text, crop, adjust color, and export MP4 files without signing up, paying, or adding a watermark.
Are my videos uploaded to a server?
No. All editing and exporting happens directly in your browser using FFmpeg WebAssembly. Your video files never leave your device and are not sent to any server.
Can I add text to a video?
Yes. Click the Text tab, press Add Text, type your message, and drag it to any position on the canvas. You can change the font size, color, background, and opacity.
Can I make vertical videos for TikTok or Reels?
Yes. Select the 9:16 ratio to crop and resize your video for TikTok, Instagram Reels, YouTube Shorts, and other vertical formats. The preview updates instantly.
What video formats are supported?
You can upload MP4, MOV, WebM, MKV, and AVI videos. The exported file is always an H.264 MP4, which is compatible with all major platforms and devices.
Can I use it on iPhone or Android?
Yes. The editor works in modern mobile browsers including Safari on iPhone and Chrome on Android. Large files may be slower to export due to mobile memory limits.
Will there be a watermark?
No. Exported videos have no watermark, no Zolkit branding, and no hidden overlay. The MP4 you download is the clean original with only your edits applied.
Why is the export slow for large videos?
All rendering happens in your browser via WebAssembly, which is slower than native apps. For faster exports, use shorter clips (under 3 minutes) or choose 720p resolution in the export settings.