Zumkor: Media Converter

About this app

Zumkor converts your photos, music, and videos into the format you actually need — right on your Mac. Drag in a file, or a whole folder, pick what it should become, and click Convert. Your files are never uploaded, and converting works with Wi-Fi off. No subscription. Buy once, keep it forever. WHAT ARE YOU TRYING TO DO? The video won't play. Turn MKV, WebM, AVI, WMV or FLV into an MP4 that plays anywhere — and keep the subtitles, when the video has text ones. You found old camcorder tapes or DVDs on a hard drive. Zumkor opens AVCHD camcorder footage (.MTS, .M2TS) and ripped DVD files (.VOB) and turns them into MP4s you can actually watch and share. The file is too big to send. Shrink a video to fit Gmail, Outlook, WhatsApp, Discord, iMessage or Notion. Pick the app, not a bitrate. The photo is too big for the web. Resize while you convert — email-friendly, or sized for a web page. Someone needs your iPhone photos as JPGs. HEIC to JPG — hundreds at once, and they keep looking like the originals. You only need part of a video. Trim it to the good bit first. No editor needed. You just want the sound. Pull the audio out of a video, or make a plain, normal MP3. The video already has subtitles you need as a file. Pull them out as SRT or VTT — on any Mac. It needs captions and hasn't got any. Zumkor listens to your video and writes the subtitles for you (macOS 26 and up; the first time, it downloads Apple's speech model). You recorded your screen. Turn it into a GIF for Slack, Linear or GitHub — including one small enough that Discord plays it by itself. You're publishing an episode. Make a set: one video in, a 1080p YouTube video and a podcast audio file out — each at the right loudness, each in its own folder. You're sending photos to someone. Remove personal data — GPS location, device info — before they go. You're delivering work to a client. Name every file the way you need: the date, the client's name, numbering. Keep your folder layout or put it all in one folder, with names that are safe on Windows too. Your old music won't open. WMA and OGG files become MP3, M4A or FLAC. You shoot RAW. Canon, Sony, Nikon, Fuji, Olympus, Panasonic, Pentax and DNG to JPG or TIFF, in one batch. They're still in Photos. Bring them straight in from your library — no exporting first. WHY ZUMKOR • 100% on your Mac. Your files are never uploaded, and converting works offline. • No subscription. One simple purchase — yours forever. • Batch everything. Drop a whole folder — and your list is still there next time you open the app. • Beautifully simple. No codec or bitrate settings to learn — just pick what you want. • Privacy first. Removing personal data is one click, and it's always your choice. • Right where you need it. Convert from Finder with a right-click, or automate it with Shortcuts — without opening the app. FORMATS IT HANDLES • Photos: makes HEIC, JPG, PNG, WebP, TIFF and AVIF — and opens camera RAW. • Audio: makes MP3, M4A (AAC), WAV, AIFF, Apple Lossless, FLAC and Opus — and opens WMA and OGG too. • Video: makes MP4, MOV, M4V and MKV — and opens the tough ones: MKV, WebM, AVI, WMV, FLV, AVCHD camcorder footage and DVD files. • Also: animated GIFs, and subtitles (SRT and VTT). FREE TO TRY Use everything free for 7 days. After that you can still convert 5 files a day — 25 a week — for free, with a small Zumkor mark on videos. Or unlock everything with one purchase. No subscription, ever. Everything happens on your Mac. No account, no sign-up, and no data collected.

More files convert • Old camcorder and DVD footage — .MTS, .M2TS, .TS and .VOB files from AVCHD camcorders and ripped discs. • Old Windows Media music files (.wma). • Files whose name doesn't match what's inside, like a video renamed from .mkv to .mp4. • Videos carrying a very large number of subtitle tracks or embedded fonts. The sound is kept, and your chosen picture size is applied.

Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.

1. First observed Aug 7, 2026 · 6:38 AM Free