Rename the extension. Morph does the rest.
A tiny menu-bar app for macOS. Rename a file in Finder — or right-click it — and Morph converts it locally: images, audio, video, documents and more.
$5.00 a year · Images free forever · macOS 13+ · Originals always kept
How it works
Three steps. No new habits.
Morph waits quietly in the menu bar and acts the moment you rename a file — no app to open, nothing to learn.
clip.mov → clip.mp4Rename the extension
In Finder, rename clip.mov to clip.mp4 — exactly the way you always would.
Morph spots the mismatch
It notices the new extension no longer matches what's actually inside the file.
It converts, safely
The file becomes a real MP4. Your original is kept, and undo is one click away.
Features
Small app. Serious range.
Everything Morph does, it does locally on your Mac — quickly, privately, and without ever touching your originals.
Just rename
No app to open, no dialogs, no export menus. Convert files right where you already work — in Finder.
Right-click “Convert with Morph”
Pick files in Finder, choose a format, and Morph converts them — the original is kept alongside.
Images, free
JPG, PNG, HEIC, WebP, TIFF, GIF and more — converted for free, forever.
Audio & video
mp3 · wav · flac · aac · m4a · ogg · aiff and mp4 · mov · m4v · mkv · webm · avi.
Documents
Word, Markdown, RTF, ODT, HTML, EPUB and more — convert between them and export to clean PDFs.
Spreadsheets & slides
Turn Excel and PowerPoint files — and OpenDocument sheets and decks — into PDFs.
Updates itself
New versions install in one click and relaunch on their own. No installers, no dragging.
Speaks your language
Fully localized in six languages, following your Mac automatically.
Safe by default
Every original is preserved automatically. Undo any conversion in a single click.
Local & private
Every conversion runs on your Mac. Nothing is ever uploaded — it works on a plane.
Lives in the menu bar
Pick watched folders, see conversion status, and activate your license — fully offline.
Pricing
Free to try. $5 a year.
A free tier on every app, then $5 a year to unlock Pro. All-Access covers them all.
Morph
Everything in Morph, unlocked.
- Everything in the free image tier
- Audio & video conversion
- Unlimited watched folders
- Every update included
Whittle All-Access
Every Whittle tool, including everything we ship next.
- Morph, fully unlocked
- Every current & future Whittle app
- All updates included
- The only Whittle subscription
Images are free, forever — no account, no trial timer. Morph Pro is a yearly subscription; All-Access covers every Whittle app.
FAQ
Questions, answered
Is Morph safe to use?
Yes. Morph always keeps your original file and any conversion can be undone in one click, so you can never lose data by renaming.
Does it upload my files?
Never. All conversion happens locally on your Mac using ImageIO and ffmpeg. Nothing is uploaded, there are no accounts, and it works completely offline.
Which formats can it convert?
Images are free: JPG, PNG, HEIC, WebP, TIFF, GIF, BMP. Morph Pro (or All-Access) unlocks audio (mp3, wav, flac, aac, m4a, ogg, aiff), video (mp4, mov, m4v, mkv, webm, avi), documents (PDF, Word, Markdown, RTF, ODT, HTML, EPUB), and spreadsheets & presentations to PDF (Excel, CSV, ODS · PowerPoint, ODP).
How does pricing work?
Morph Pro is $5.00 a year, and images are free forever — so you can try the core before you pay. Want every Whittle app? All-Access is $10.00 a year and covers them all.
What macOS version do I need?
macOS 13 (Ventura) or later, on both Apple Silicon and Intel Macs.
How do I get help or a refund?
Email [email protected] and a human will get back to you. We're a small studio and we read every message.
Morph is available now
Download it for macOS — images are free, Pro unlocks audio, video, documents and more. Or leave your email for the occasional update.