How It Works

  1. Upload your MKV — drag and drop or click to select any .mkv file.
  2. Automatic processing — a progress bar overlay is added showing playback position.
  3. Download the result — save the processed file with one click. No watermarks, no sign-up.

Why Add a Progress Bar to Your MKV?

Progress bars on videos boost engagement on social media. They signal content length, reduce scroll-away rates, and keep viewers watching until the end. Content creators on TikTok, Instagram Reels, and YouTube Shorts use progress bar overlays to increase watch time and retention.

100% Private & Client-Side

Unlike other tools, this MKV progress bar generator runs entirely in your browser. Your files are never uploaded to any server. All processing happens locally using FFmpeg.wasm — fast, private, and free.

Output Format

MKV files are converted to WEBM for maximum browser and device compatibility.

Frequently Asked Questions

Is this tool free?

Yes, completely free with no watermarks. Your file is processed entirely in your browser.

Is my file uploaded to a server?

No. All processing happens locally in your browser. Your files never leave your device.

What file size is supported?

Files up to 100 MB are supported. Large files may take longer to process.

Can I customize the progress bar?

Yes. You can change the bar color, width (50%–100%), height (thickness), and position (top or bottom).

Other Progress Bar Tools