Zest

A file converter for macOS and Windows. Drag a file, hold a key, drop it on the format you want. Everything runs on your computer.

Version: 0.1.0
Price: Free
License: MIT

Download for macOSmacOS 13 or later, Apple Silicon, 346 MB
Download for WindowsWindows 10 or 11, 64-bit, 543 MB

How it works

Drag a file
Pick up one or more files in Finder or File Explorer, as if you were moving them somewhere.
Hold a key
A wheel of choices opens around the pointer. Each key opens a different wheel.
Drop it on a format
The result is saved next to the original, or in Downloads if you prefer. Right-click works too: Convert with Zest is in the file menu.

Wheel	macOS	Windows
Convertturn it into another format	`⇧ Shift`	`Shift`
Toolscompress, merge, split or extract	`⌘ Command`	`Ctrl`
Actionsshare, copy, show in folder or open in Terminal	`⌃ Control`	`Alt`

These are the default keys; you can change them in Zest's settings.

Formats

Documents, spreadsheets and slides: PDF, DOCX, DOC, ODT, RTF, XLSX, XLS, ODS, CSV, PPTX, PPT, ODP, Markdown, HTML, TXT, EPUB
Images: JPG, PNG, WebP, HEIC, AVIF, TIFF, GIF, BMP, SVG
Audio: MP3, M4A, WAV, FLAC, OGG, Opus, AIFF, WMA
Video: MP4, MOV, MKV, WebM, AVI, WMV
Subtitles: SRT, VTT
Archives: ZIP, TAR, TAR.GZ, GZ, RAR

Tools

Compress images, PDFs and videos.
Merge, split and rotate PDFs.
Turn a set of images into one PDF.
Pull the audio track out of a video.
Pack files into a ZIP, or unpack an archive.

Offline

Every conversion happens on your computer. Files are never uploaded, and Zest works without an internet connection.

The installer brings its own engines (LibreOffice, FFmpeg, Pandoc, Ghostscript and the ONLYOFFICE converter), so you don't need Microsoft Office or anything else installed. That is also why the download is a few hundred megabytes.

First launch

This version is not signed with an Apple or Microsoft developer certificate yet, so the system asks once before it opens Zest.

macOS

Open the DMG and drag Zest into Applications.
Open Zest. macOS says it could not verify the app; click Done.
Go to System Settings › Privacy & Security, scroll down, click Open Anyway and confirm with your password.

Windows

Run the installer.
If Windows shows “Windows protected your PC”, click More info, then Run anyway.
Click Next until Finish. Zest starts in the notification area.

Details

Requirements: macOS 13 or later, Apple Silicon; Windows 10 or 11, 64-bit
Download size: Zest-0.1.0.dmg, 346 MB; Zest-0.1.0-Setup.exe, 543 MB
SHA-256: macOS77c5d081ec334d5af2f039c350ef5b3dcc9d976d1ad361efea184b0527a3b03b; Windows61fb5fd595dfeaf5f42b99fd1ec7c119b9c68c69b0acdfad43a069285592eb7c
Licenses: Zest is MIT-licensed. The bundled engines keep their own licenses, and their source code is attached to the release.; Release on GitHub Third-party licenses