100% On-Device · Free for Personal Use
Convert Any File.
Beautifully.
HEIC→JPG, MOV→MP4, WEBP→PNG, FLAC→MP3 — and dozens more. Drag in your files, pick a format, and Convertr handles the rest, entirely on your Mac. Nothing is ever uploaded.
v1.0 · macOS 12+ · Apple Silicon & Intel · Signed & notarized by Apple · No account
How it works
Three steps, then you're done.
Drag in your files
Drop images, audio, or video onto the window — one file, a hundred, or a whole folder. Or press ⌘O to pick them, or ⌘V to paste from Finder.
Pick a format
Convertr suggests the right target for each file. Change one, or set the format for every image, audio, or video file at once. Tune quality, size, or bitrate if you like.
Convert
Hit Convert and everything runs in parallel, right on your Mac. Files are saved next to the originals or in a folder you choose — and Convertr shows you how much space you saved.
Features
Everything macOS conversion should be.
A focused, native app that does one thing exceptionally well — without ever sending your files to the cloud.
Every common image
HEIC, JPG, PNG, WEBP, AVIF, TIFF, GIF and BMP — convert between any of them. iPhone HEIC photos become shareable JPGs in a click.
Video & audio too
MP4, MOV, MKV and WEBM for video; MP3, M4A, WAV, FLAC, AAC and OGG for audio. Pull the audio out of any video, or turn a clip into a GIF.
100% on your Mac
Nothing is uploaded — ever. No account, no cloud, no telemetry. Convertr makes no network connection and works perfectly offline.
Hybrid engine
macOS's own ImageIO reads HEIC with full fidelity; a bundled FFmpeg handles everything else. Best-in-class quality, with nothing extra to install.
Batch a whole folder
Drop dozens of files and convert them all at once, in parallel. Each file can keep its own target format and settings.
Fine control
Quality sliders, resize, video bitrate, and GIF frame-rate & width — set globally or per individual file from a tidy gear popover.
Signed & notarized
Opens with a normal double-click — no "unidentified developer" warning, no Open Anyway, no Terminal. Notarized by Apple.
No warnings
Built for everyone
Full keyboard control, VoiceOver labels throughout, automatic light & dark, and reduced-motion support. WCAG-minded from the start.
Light & quick
A native app that launches instantly, follows your system theme, and remembers the folders you convert from most. Also exports ICNS & ICO icons.
ICNS · ICO
Converts between
HEIC
JPG
PNG
WEBP
AVIF
TIFF
GIF
BMP
ICNS
ICO
MP4
MOV
MKV
WEBM
MP3
M4A
WAV
FLAC
AAC
OGG
Pricing
Free for you. Fair for work.
Personal use is free forever — every format, no key, no account, no watermarks. If Convertr earns its keep at your job, a one-time business license keeps it supported.
Personal
Free forever
For individuals and personal projects
- All formats — images, audio & video
- Batch convert whole folders
- Per-file quality & resize controls
- 100% on-device, fully offline
- No account, no nag screens
Business
$19 / computer
One-time payment — no subscription
- Everything in Personal
- Use commercially at work
- One-time payment — no subscription
- Free updates for life
- Supports solo indie development
The personal tier is the full app — buy a business license only if you decide to use Convertr commercially. It's the honor system; thank you for keeping indie software alive.
Download & install
Get set up in seconds.
Download the app and drag it into Applications — that's it. No Terminal, no Homebrew, no sign-up.
Version 1.0 · Released June 2026 · Free updates
macOS 12 Monterey or later · Apple Silicon or Intel
Everything Convertr needs — including the FFmpeg engine — is built right into the app. Nothing else to install.
Opens with a double-click
Convertr is signed with an Apple Developer ID and notarized by Apple, so it opens cleanly the first time — no
Open Anyway trip through System Settings, no Terminal. Open the DMG, drag Convertr into Applications, and launch it.FAQ
Common questions.
Is Convertr really free?
Personal use is free forever — all formats, no account, no trial timer, no watermarks. If you use Convertr at work, a one-time $19 business license per computer keeps it supported.
How does the business license work?
If you use Convertr commercially, email for a $19 one-time license per computer. It's the honor system — the personal tier is the full app with no nag screens, so you can evaluate it freely first.
Does Convertr upload my files anywhere?
No. Every conversion runs entirely on your Mac. Convertr makes no network connection and needs none — it works fully offline. Your files never leave your computer.
What can it convert?
Images (HEIC, JPG, PNG, WEBP, AVIF, TIFF, GIF, BMP), icons (ICNS, ICO), audio (MP3, M4A, WAV, FLAC, AAC, OGG), and video (MP4, MOV, MKV, WEBM). It can also extract the audio track from a video, or turn a clip into an animated GIF.
Why does it handle iPhone HEIC photos so well?
Convertr uses macOS's own ImageIO — the same engine Photos and Preview use — to read HEIC, so your iPhone photos convert with full fidelity. A bundled FFmpeg handles every other format.
Will macOS warn me about an unidentified developer?
No. Convertr is signed with an Apple Developer ID and notarized by Apple, so it opens with a normal double-click the first time — no Open Anyway dance, no Terminal.
How do I update Convertr?
Re-download the latest Convertr.dmg from this page, open it, and drag the new Convertr into your Applications folder — it replaces the old one. Your preferences carry over automatically.
Is there a Windows version?
Not yet — Convertr is Mac-only for now. It's built around macOS's native image pipeline, which is a big part of why HEIC conversion is so good.