Convert Files,
Not your privacy
Drag and drop to convert videos, images, audio, and documents locally. Files never leave your device.
Trusted by creators, students and professionals.
Convert Any File Securely
No uploads, no waiting. Everything runs locally, so your files stay with you.
Convert files privately
on your device
One converter for images, videos, audio, and documents. Everything runs on your machine, so nothing is ever uploaded.
Early feedback
What early users are saying
“As a Product Manager I converted multiple PDFs into editable Word files for a requirements review. No learning curve, just a few clicks, and the formatting held up so the team could focus on content instead of fixing layouts.”
Richa Singh
Product Manager
“Half my files sit under NDA, so local conversion isn't optional. Drag, pick format, done. No upload prompt, no telemetry.”
Aman Harsh
Software Engineer
“Replaced a janky shell script I'd been carrying for years. ffmpeg, ImageMagick, qpdf, all wrapped in one UI that I can actually share with a teammate. Bought the desktop on the spot.”
Himanshu
Software Engineer
“Batch resize 200 product photos to WebP, video to GIF for social, audio ripped from a podcast clip. Whole stack of SaaS subscriptions collapsed into one app.”
Shubhendra Singh
Digital Marketing
“As a Product Manager I converted multiple PDFs into editable Word files for a requirements review. No learning curve, just a few clicks, and the formatting held up so the team could focus on content instead of fixing layouts.”
Richa Singh
Product Manager
“Half my files sit under NDA, so local conversion isn't optional. Drag, pick format, done. No upload prompt, no telemetry.”
Aman Harsh
Software Engineer
“I merged two images of my Aadhaar card into a single PDF without uploading my data to random servers around the world. Fast, privacy-friendly, and works entirely offline. Easily one of the best tools I've found for simple, secure file conversions.”
“Patient intraoral photos come off the iPhone as HEIC. I batch them to JPG and drop them into the records system, all on the clinic machine. Privacy is the whole reason I use it.”
“As a Product Manager I converted multiple PDFs into editable Word files for a requirements review. No learning curve, just a few clicks, and the formatting held up so the team could focus on content instead of fixing layouts.”
Richa Singh
Product Manager
“Half my files sit under NDA, so local conversion isn't optional. Drag, pick format, done. No upload prompt, no telemetry.”
Aman Harsh
Software Engineer
“I merged two images of my Aadhaar card into a single PDF without uploading my data to random servers around the world. Fast, privacy-friendly, and works entirely offline. Easily one of the best tools I've found for simple, secure file conversions.”
“Replaced a janky shell script I'd been carrying for years. ffmpeg, ImageMagick, qpdf, all wrapped in one UI that I can actually share with a teammate. Bought the desktop on the spot.”
Himanshu
Software Engineer
“MP4 to MP3, MOV to MP4, DOCX to PDF, all in one session without opening a single sketchy converter site. That alone was worth the price.”
“Batch resize 200 product photos to WebP, video to GIF for social, audio ripped from a podcast clip. Whole stack of SaaS subscriptions collapsed into one app.”
Shubhendra Singh
Digital Marketing
“Replaced a janky shell script I'd been carrying for years. ffmpeg, ImageMagick, qpdf, all wrapped in one UI that I can actually share with a teammate. Bought the desktop on the spot.”
Himanshu
Software Engineer
“MP4 to MP3, MOV to MP4, DOCX to PDF, all in one session without opening a single sketchy converter site. That alone was worth the price.”
“Batch resize 200 product photos to WebP, video to GIF for social, audio ripped from a podcast clip. Whole stack of SaaS subscriptions collapsed into one app.”
Shubhendra Singh
Digital Marketing
The only file converteryou’ll ever need.
Convert 800+ formats entirely on your Mac. Your files never leave your device.
- Files never leave your Mac
- 800+ formats
- Unlimited file size
- Batch whole folders
- Works completely offline
- Lifetime updates
One payment, yours for life. 14-day money-back guarantee, no questions asked.
All prices in USD. Cards, Apple Pay, Google Pay and Link accepted.
FAQ
Frequently Asked Questions
What is TeraConvert?
TeraConvert is a local file converter for images, videos, audio, and documents. The web app converts in your browser tab, the desktop app converts with native engines on your Mac, and neither one uploads your files anywhere.
What's the difference between the browser and the desktop app?
The browser converter handles the most common formats (PNG, JPG, MP4, MP3, PDF, DOCX, and more) right in the tab, one file at a time. The desktop app adds HEIC, RAW, EPUB, AVI, FLV, XLSX, and hundreds of other pairs, plus batch conversion.
What formats does it support?
800+ supported conversions across images (PNG, JPG, HEIC, AVIF, WebP, SVG, TIFF, RAW), video (MP4, MOV, MKV, AVI, WebM, FLV), audio (MP3, WAV, FLAC, AAC, OGG, M4A), documents (PDF, DOCX, MD, HTML, EPUB), spreadsheets (XLSX, CSV, ODS), and presentations (PPTX, PPT).
How does it run locally without uploading my files?
The web app converts directly in the browser tab using WebCodecs, Canvas, and WASM (including FFmpeg, jSquash, and pdf-lib). The desktop app uses Apple's built in tools where available (sips, textutil, qlmanage) and calls out to standard CLI engines (FFmpeg, ImageMagick, Pandoc, Ghostscript, Tesseract, LibreOffice) that you install once through your system package manager (Homebrew on macOS). Files stay on your device in both cases.
Can I use it for NDA, confidential, or other sensitive files?
Yes. Because conversions run on your machine, files never touch our servers or any third party. Many users run it on isolated work laptops for exactly this reason. If you operate under a compliance regime such as HIPAA, you remain responsible for your own organization's policies and infrastructure.
Does it work fully offline?
Yes for conversions. The desktop app activates once with an internet connection to verify your license, and from then on every conversion runs locally with no network calls.
How many devices can I use, and do I get free updates?
The license is tied to your account, so you can use it on every Mac you own. There is no device limit. Every future update is included for the lifetime of the app.
What's the refund policy?
Every purchase comes with a 14-day money-back guarantee, no questions asked. Email contact@teraconvert.com with your order ID within 14 days and you get a full refund.
My format isn't supported. Can I request it?
Yes. Format additions are prioritized by user requests. Reach out through the contact page with your input and desired output format and we'll look at the routing.