Interactive Before/After Preview
Never guess what your compressed video will look like. Drag the interactive split comparison slider to inspect fine details before exporting.
Shrink large MP4, WebM, and MOV files for Discord, WhatsApp, email, or web publishing. Pick High, Medium (~35% smaller), Low (~65% smaller), or Custom (10%–100%) compression and inspect visual clarity live with a split Before/After comparison slider — 100% private and watermark-free.
Reduce video file size with real-time Before/After quality comparison
or drag and drop your video file anywhere on this pageShrink video file sizes in seconds with complete visual control and zero upload waiting.
Select or drag your video into TrimCrop. Your video opens instantly in local memory without uploading to a remote server.
Select High, Medium, Low, or Custom slider. Drag the interactive Before/After split line over the video player to inspect visual quality.
Click Export Video to encode and download your optimized video with zero watermarks.
Get the exact file size you need while keeping your videos looking sharp and clean.
Never guess what your compressed video will look like. Drag the interactive split comparison slider to inspect fine details before exporting.
Fine-tune the exact compression ratio to achieve the ideal balance between crisp visual quality and lightweight file size.
Easily get large videos under Discord’s 25MB limit or standard 20MB email attachment caps with accurate target size estimations.
All encoding runs directly on your device via WebAssembly. Confidential corporate recordings and personal clips never touch third-party servers.
Unlike traditional tools that stamp watermarks or lock compression behind subscriptions, TrimCrop is 100% free with clean exports.
Utilizes modern CRF (Constant Rate Factor) encoding algorithms that preserve text readability, sharp edges, and natural colors.
See why creators choose client-side WebAssembly video compression over cloud converters.
| Feature | TrimCrop | Typical Online Tools |
|---|---|---|
| Visual Quality Check | Live Before/After split-screen slider | Blind compression (Download first to see) |
| Compression Controls | High, Med, Low & Custom 10%–100% slider | Rigid fixed presets or paywalled options |
| Upload Delay | 0 Seconds (Instant local RAM) | 5 – 30 Minutes (Large cloud upload) |
| Data Privacy | 100% Private (Never leaves device) | Stored on third-party cloud servers |
| Watermarks | Zero watermarks ever | Forces watermark or limits daily exports |
| Price | 100% Free Forever | $10 – $25/month subscription |
Answers to the most common questions about reducing video file sizes online.
Open your video in TrimCrop and select the "Quality & Size" tool. Choose the Medium preset (~35% smaller) or Low preset (~65% smaller) or use the Custom slider to target under 25MB (Discord free limit) or 20MB (email limit). Verify the real-time estimated file size on the app bar and click Export Video.
When you select the Quality & Size tool, TrimCrop generates an interactive split-screen overlay directly over the video player. Drag the divider line horizontally across the frame to compare the crisp original footage on the left against the compressed preview on the right.
Yes! The Medium preset uses optimized H.264 CRF (Constant Rate Factor) settings that strip imperceptible high-frequency visual data while maintaining sharp edges, text readability, and color fidelity, yielding substantial file size reductions.
No. TrimCrop never adds watermarks, stamps, or logos to your video. You get 100% clean, professional exports every time.
No. TrimCrop processes all video compression 100% client-side inside your browser powered by WebAssembly (FFmpeg). Your video file never leaves your machine.
Shrink your video file size for Discord, WhatsApp, or email with total privacy and zero watermarks right now.