PrivateTools

Features

trimy

Trim, split, rearrange and join local video or MP3 clips on a two-track timeline.

Direct workspace

Open trimy

Files are processed locally on your device.

Useful for

Typical workflows

  1. 01

    Cut a clip without a full render.

  2. 02

    Join camera clips into one video.

  3. 03

    Add captions, crop and rotate.

  4. 04

    Replace audio or trim an MP3.

Capabilities

What it does

Editing

Trim and join
Cut clips, reorder them and combine them on one timeline.
Split
Cut at the cursor or playhead, with a visible position guide.
Clip actions
Copy, paste, duplicate or delete clips.
Crop and rotation
Change framing and rotate individual clips.
Image tools
Adjust brightness, apply black and white, or add borders and captions.
Audio tracks
Keep, detach, replace or add audio alongside video.
MP3 editing
Trim and join MP3 clips in audio-only mode.
Auto subtitles
Recognize speech locally with Fast or Quality models and edit the timed text.

Preview

Playback
Play, seek, step through frames and review in fullscreen.
Preview fallback
Generate local frame previews for sources the browser cannot play directly.

Export

Lossless trim and join
Keep compatible streams without re-encoding; supported MP4/MOV trims retain the selected range, others align to keyframes.
Partial re-encode
Encode only incompatible segments, gaps or audio fixes when possible.
Edited video
Export crop, rotation, picture adjustments and captions with re-encoding.
H.264 and H.265
Convert between codecs while matching source dimensions and frame rate.
Overwrite original
Save over one supported video or MP3 original in its existing format with browser permission; replacement is permanent.

Sessions and history

Saved sessions
Autosave edits and keep, restore or delete named projects in this browser.
Reconnect originals
Resume with your original files; saved projects store edits and file references.
Undo
Undo the last five editing operations.

Privacy

Local processing
Process source files on your device without uploading them.
Remembering data
Choose whether to save new sessions and settings in this browser.
Clear local data
Remove saved site data across all tools while keeping disk originals and downloaded exports.

Source + result

Formats

  • Video output: MP4, MOV, AVI, MKV, WebM
  • Audio input: MP3, WAV and other common audio formats
  • Audio-only output: MP3

Product notes

Documented changes

More control over local files, photo edits, and timeline cuts

The latest PrivateTools changes make repeated edits easier: save directly to supported originals, work through a RAW shoot with a connected folder, use conversion controls that follow your file, and see exactly where a timeline action will happen. Browser data is now easier to manage across the site.

Read note →

trimy adds text and frame tools to clips and joined videos

The video workspace now includes local brightness, black-and-white, border, caption, and rotation controls with preview and export behavior matched to timeline scope.

Read note →

trimy unifies H.265 preview, conversion, and safer lossless cuts

H.265 sources now share a persistent preview and encode pipeline, explicit H.264/H.265 conversion keeps analyzed source settings, and lossless trims expose keyframe-safe boundaries in the timeline.

Read note →

trimy export guidance now separates copy and encode paths

The trim and join documentation now explains when a stream can stay copied and when a precise or compatible result requires encoding.

Read note →

Mixed-timeline documentation now states the compatibility checks

The manual now makes clear that matching extensions do not prove a safe direct join; codecs, dimensions, frame rates, audio, and timing still matter.

Read note →

Try trimy.

Choose a local file to get started.

Open trimy