Does trimy upload my video?

No. Your video stays in your browser. Processing runs locally on your device (the trimming engine may be downloaded to your browser on first use).

When should I use Lossless vs Precise vs Re-encode?

Use Lossless for the fastest cut with no quality loss when it’s available. If you need frame-perfect trims (especially on non-keyframes), use Precise or Re-encode.

Why does Lossless sometimes start a bit earlier or later?

Lossless trimming is constrained by keyframes in the source video. If the cut needs to start on a non-keyframe, the nearest keyframe may be used. Switch to Precise/Re-encode for exact frame accuracy.

Can trimy trim very large videos?

Yes. trimy is built for large files and can handle multi‑GB inputs. For very large files (including MKV > 2 GiB), it uses the FFmpeg WORKERFS path to avoid loading the full file into memory.

Which browsers work best?

Modern browsers are recommended. Chrome, Firefox, and Safari with up-to-date WebCodecs support provide the best experience.

How to Trim Video Without Losing Quality

A practical guide to making fast, lossless cuts in trimy — plus when to switch to Precise or Re-encode for frame-perfect results.

Open trimy Read Tutorial

Why trimy is great for trimming

Fast Lossless Cuts

When possible, trimy stream-copies your video so quality stays identical and exports finish quickly.

Privacy-First

Your files never get uploaded. Processing happens locally in your browser.

Works on Huge Files

Built for large videos. Special handling exists for very large MKV files (>2 GiB).

Step-by-Step Tutorial

Load your video

Drag & drop a file — your video stays on your device.

Open the trimy video trimmer and add your file. It supports common containers like MP4, MOV, MKV, AVI, and WebM.

Drop a file anywhere on the page or click the file area
Large videos are supported (processing depends on your device)
Your file is processed locally — no uploads required

Open trimy →

Frequently Asked Questions

Ready to trim your video?

Make a clean cut in minutes — with lossless exports when possible and no uploads.

Open trimy