Free · Browser-Based · Zero Quality Loss

PURECUT

Trim and merge video & audio files with zero quality loss.
Directly edit MP3, WAV, FLAC and more. Extract audio (M4A/MP3) with gain control.
🔒 Your file never leaves your browser.

✂ Launch PureCut How to use

Zero Re-encoding No Upload MP4 / WebM / MOV MP3 / WAV / FLAC Lossless Browser Only Audio Extract Gain Control Free Forever

Features

Why PureCut

💯

Zero Quality Loss

Uses FFmpeg's -c copy mode — no re-encoding. Every bit of your original video and audio quality is preserved.

🔒

100% Private

Your video never leaves your device. All processing happens locally in your browser via FFmpeg.wasm. No GDPR worries.

⛓

Multi-Segment Merge

Select multiple segments and merge them into one file. Remove unwanted parts and join them seamlessly.

🚀

No Install Needed

Works in any modern browser. No account, no app, no extension required. Windows, Mac, Linux — all supported.

🎬

Video & Audio Formats

Supports MP4, WebM, MOV and audio files (MP3, WAV, FLAC, OGG, M4A, AAC) for direct trimming. Output: MP4, lossless M4A, MP3, or video-only MP4.

🆓

Completely Free

No watermarks, no time limits, no file size cap (browser memory permitting). Free forever — no subscription.

🎵

Audio Trimming & Extraction

Load MP3, WAV, FLAC directly for lossless trimming and merging. Extract audio from video as lossless M4A or MP3 — perfect for podcasts and BGM.

🔊

Gain Control & Waveform

Adjust volume from ×0.1 to ×5.0 with a slider. Audio waveform is automatically rendered on file load, helping you find cut points instantly.

How to use

Step by Step

Load Your Video or Audio File

Drag and drop your video or audio file onto the drop zone, or click to browse. Supports MP4, WebM, MOV and audio files such as MP3, WAV, FLAC, OGG, M4A, AAC.

File never leaves your browser

Set Trim Range

Drag the yellow handles on the timeline to set your start and end points. Use the preview button to verify each segment before exporting.

(Optional) Add More Segments

Click "+ Add Segment" to define multiple ranges. Segments are merged top to bottom in order. Remove any segment with the "✕ Delete" button.

No limit on number of segments

Choose Output Format

Select from 4 output modes: Video + Audio (MP4), Audio only lossless (M4A), Audio only MP3, or Video only (silent MP4). Optionally adjust the volume gain slider.

Gain ×1.0 keeps audio lossless

Export & Download

Click the export button. Processing runs entirely in your browser — no upload, no waiting for a server. Preview the result, then click "⬇ Download" to save your file.

100% local — no server involved

✂ Open PureCut

Comparison

How We Compare

	PureCut	Clideo / Kapwing	iMovie	DaVinci Resolve
Lossless cut	✔	✘	✘	Depends
No upload	✔	✘	✔	✔
No install	✔	✔	✘	✘
Completely free	✔	Limited	✔	✔
Multi-segment merge	✔	✔	✔	✔
No watermark	✔	Free tier: ✘	✔	✔
Audio extraction (M4A/MP3)	✔	✔	✘	✔
Volume gain control	✔	✔	✔	✔

FAQ

Frequently Asked Questions

Is my video uploaded to a server? +

No. PureCut uses FFmpeg.wasm to process everything locally in your browser. Your video never leaves your device — ever.

Is the output truly lossless? +

Yes. PureCut uses FFmpeg's -c copy mode — no re-encoding occurs. Original bitrate, resolution, and codec are preserved. Note: cut points snap to keyframes, so a slight offset of a few frames may occur at boundaries.

What input/output formats are supported? +

Video input supports MP4, WebM, MOV, and other common formats. Audio files (MP3, WAV, FLAC, OGG, M4A, AAC) can also be loaded directly. Output varies by mode: video+audio → MP4, audio-only lossless → M4A, audio-only MP3 → MP3, video-only → MP4 (silent).

Can I trim audio files directly or extract audio from video? +

Both are supported. Load MP3, WAV, FLAC and other audio files directly to trim and merge them losslessly. To extract audio from video, choose "Audio only (lossless)" for M4A, or "Audio only (MP3)" to convert to MP3.

Can I process large files? +

PureCut can handle files up to a few hundred MB to around 1GB depending on your browser and system memory. Very large files (several GB) may not work due to browser memory limits. For large files, a desktop tool like LosslessCut may be more suitable.

Does gain adjustment affect audio quality? +

Setting gain to anything other than ×1.0 applies FFmpeg's volume filter, which re-encodes the audio track. Keeping gain at ×1.0 outputs audio losslessly (stream copy). Gain is ignored in video-only mode.

Does it work on mobile? +

Yes, PureCut works on Android and iOS. After exporting, tap "⬇ Save / Share" to save the file to your device. However, we recommend a desktop or laptop for the best timeline control and processing speed.