Toolbox
A free desktop toolbox for your media: convert, trim, join, rename and download, and add tools of your own.
Toolbox is a desktop app
It runs on Windows, macOS and Linux. Send yourself the link and download it on your computer.
Or email it to yourself
Choose your computer
The same app on every platform. Grab the latest version below.
What’s inside
Ten built-in tools in one simple app, and you can add your own. Pick one from the home screen, fill in the form, and press Apply.
Files
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Rename
Organise TV shows and movies for Plex or Jellyfin, or tidy any folder and file names with reusable profiles. An optional AI helper can suggest a profile from your folder names.
Media
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Convert
Batch-convert videos between formats, with optional deinterlace and GPU encoding.
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Trim
Cut seconds off the start and/or end of one or more files.
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Stitch
Join several clips into a single video, in the order you choose.
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Download
Save videos or playlists from supported sites as MP4 or MP3.
Subtitles
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Translate
Translate SRT subtitles into another language with the AI service you choose: OpenAI, Claude, Gemini or a local model (bring your own key).
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Clean Up
Remove links, credits and other junk lines from SRT files.
Experimental
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DVD (VTS)
Merge the pieces of a DVD rip into one file per title.
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Audio Default
Choose which audio language plays by default in MKV files.
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Fix Duplicates
Remove “(2)”, “(3)” … suffixes from file names.
Every tool above is a “mod”, and you can add more: install one from a git address, a folder or a zip, or find one in the mod market. Toolbox shows who wrote it, where it comes from and what it says it can do, and installs nothing until you say yes. Mods are not reviewed by the project, so only use ones you trust. Want to make your own, or have an AI assistant write it for you? How to write one
See it in action
Simple forms, live progress, and light or dark mode to match your computer. Scroll sideways for more.
Installing it
Toolbox isn’t signed with a paid developer certificate, so your computer may ask you to confirm once. That’s expected, and it’s safe to continue.
Windows
- Download and open the installer (
Toolbox-Setup-…-win64.exe). - If Windows says “Windows protected your PC”, choose More info, then Run anyway.
- Finish the installer, then start Toolbox.
macOS
- Open the downloaded
.dmgand drag Toolbox into your Applications folder. - The first time, right-click (or Control-click) the app and choose Open, then confirm.
- If macOS still blocks it, go to System Settings → Privacy & Security and choose Open Anyway.
Linux
- Download the
.AppImagefile. - Make it executable:
chmod +x Toolbox-*.AppImage(or tick “Allow executing” in the file’s properties). - Run it. The build is for 64-bit Intel/AMD (x86_64) computers.
Toolbox downloads ffmpeg (about 100 MB) once, so the installer itself stays small. If your antivirus blocks it, press Retry in the app. Already installed? Update from Settings → Updates inside the app.