Free for Windows, macOS & Linux

Every video tool. One light app.

Record, edit, convert, compress and enhance video in one featherweight app. It runs entirely on your machine, starts in under a second, and barely touches your RAM.

Download Alchemist See what it does

Installer & portableNo accountAuto-updates

MP4✦MKV✦WebM✦MOV✦GIF✦AV1✦HEVC✦H.264✦VP9✦ProRes✦MP3✦FLAC✦Opus✦SRT✦
One app. Five transmutations.

Replace four tools with one alembic.

A screen recorder, an editor, a converter and a compressor, sharing one engine and one design language. Each part only loads when you use it.

01

Record

Capture without the weight. Full screen, a window or a region, plus webcam, system audio and mic on separate tracks. Crash-safe from the first frame.

02

Edit

Essentials, done really well. Multi-track timeline, frame-accurate trims, auto-zoom on clicks, captions and undo that survives restarts.

03

Convert

Any format in, any format out. Batch queue, lossless remux when possible, hardware encoding with a software fallback.

04

Compress

"Make this under 25 MB." Pick a target size and Alchemist does the maths, then reports the real quality score and size saved.

05

Enhance

Rescue old footage. Upscale, denoise, stabilize and smooth slow motion, always with an honest before/after split view.

BeforeAfter
Prime directive

As light as possible. Then lighter.

Recording never pays for the editor. Converting never pays for the timeline. Memory stays flat no matter how long you record.

Idle in tray <30MB
Recording 1080p60 <100MB
Recorder cold start <1sec
Recording CPU <5%
Memory over a 2-hour recording Recorder budgetGrowing buffer (what we avoid)
0:000:301:001:302:00

These are the budgets every build must meet. Automated tests fail the build if any is exceeded, and real measured figures are published with every release.

Target-size mode

Make it fit.

Tell Alchemist the size you need. It works out bitrate and resolution, previews a few seconds, and shows the real result before you commit.

team-standup.mov1920×1080 · 60 fps · 3:00 · 1.24 GB
Video bitrate
—
Resolution
—
Smaller by
—

Bitrate and resolution are calculated from the target size and duration, with 128 kbps reserved for audio. The quality score is measured after the preview encode, never guessed.

Themes

Ten moods. Plus yours.

Five dark and five light themes, including high-contrast. Follow your system, pick an accent, or import your own. Switching is instant and costs nothing.

Dark

Light

Local-first

Private by design

Your footage never leaves your machine. No account. No cloud. No telemetry. Originals are never modified, and if your power cuts out mid-recording, you lose seconds, not the session.

  • 01Works offlineEvery core feature runs without a network.
  • 02Non-destructiveEdits and effects sit on top of the original file.
  • 03On-device AICaptions and cleanup run locally, and unload when done.
  • 04Opt-in onlyAnything connected is off by default and clearly labelled.
Always current

Updates itself. Safely.

New versions come straight from GitHub Releases. Every update is signed and verified, waits until you're idle, and rolls back on its own if anything goes wrong.

  1. i.
    Checks quietlyOnce a day, from GitHub only. No tracking, no identifiers.
  2. ii.
    Verifies everythingChecksum and signature are checked before anything is applied.
  3. iii.
    Never interruptsNot during a recording, an export or a conversion. Ever.

Transmute.

Installer or portable. Windows, macOS and Linux. Free, private and fast.

Download Alchemist All platforms
Windows 10/11 · x64 · arm64macOS 12+ · Apple silicon · IntelLinux · AppImage · deb · rpm