How to Batch Convert HEIC to JPG Offline on Windows & Mac

HEIC (High Efficiency Image Container) is widely used by iPhones and modern cameras because it offers high image quality with smaller file sizes. However, HEIC files are not universally supported—many Windows applications, older macOS versions, and web platforms still prefer JPG.

If you need to batch convert HEIC to JPG offline on Windows or Mac, using a desktop solution is often the most reliable and secure approach.

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Why Convert HEIC to JPG Offline?

Online HEIC converters can work for small, non-sensitive tasks, but they have limitations:

Privacy risks - uploading personal photos to third-party servers
File size limits - large batches may fail
Slow speed - depends on internet connection
Format restrictions - limited output options

An offline desktop converter avoids all of these issues and gives you full control over your images.

Method 1: The Easiest Way (Windows & Mac)

Recommended for: Users who need to convert large batches (100+ photos) quickly while preserving quality.

Native tools often crash when handling hundreds of images, and they lack customization options (like adjusting compression levels). This is where dedicated desktop software shines. Using Linraw doImage, you can process unlimited files in seconds.

Key Features

Batch conversion - convert hundreds or thousands of HEIC images at once
Offline processing - no internet connection required
Cross-platform - works on both Windows and Mac
Multiple output formats - JPG, PNG, WEBP, and more
Original quality preserved - maintain EXIF data and image clarity
Simple workflow - drag and drop, choose format, convert

Step-by-Step Guide:

Download and Launch: Install Linraw doImage on your Windows or Mac computer.

Drag and Drop: Select your folder of HEIC images and drag them into the program window.
Choose Output Format: Select JPG (or PNG/WEBP if preferred).
Click Start: Your files will be processed locally and saved to your destination folder instantly.

Why use this method? It supports multi-core processing, meaning it converts photos much faster than native system tools.

Method 2: Using Native Tools on Windows

Recommended for: Occasional conversions of small batches.

Windows does not handle HEIC natively by default without an extension, and the "Photos" app can be clunky for bulk actions. However, it is possible.

Using the Windows Photos App

Ensure you have the HEIF Image Extensions installed from the Microsoft Store (this may cost $0.99).

Open the folder containing your HEIC files.
Select the photos you want to convert.
Right-click and select Open with > Photos.
Once open, unfortunately, Windows Photos does not have a simple "Save As" for batches. You often have to use the "Edit" feature on images individually.

Note: For true batch conversion on Windows without third-party software, most users are forced to use the command line or cumbersome scripts, which is why a dedicated converter is usually preferred.

Method 3: Using Native Tools on macOS

Recommended for: Mac users with a moderate number of photos.

macOS is more friendly toward HEIC (since Apple created the ecosystem), and it includes a built-in tool called Preview that can handle conversions.

Using the Preview App

Select all the HEIC files you wish to convert in Finder.
Right-click and choose Open With > Preview.

In Preview, click inside the thumbnail sidebar and press `Command + A` to select all images.
Go to File > Export Selected Images.

Click the Options button, change the format to JPEG, and adjust the quality slider.

Choose a destination folder and click Choose.

The Downside:: Preview can become unresponsive or crash if you try to convert thousands of high-resolution images at once.

Method 4: Using Command-Line Tools

Tools like ImageMagick or libheif

magick in.heic out.jpg

Powerful but require technical knowledge
Less user-friendly for non-technical users

Comparison: Professional Software vs. Native Tools

Feature	Linraw doImage	Windows Native	macOS Preview	Command-Line Tools
Batch Speed	High	Low	Medium	High
Ease of Use	Simple (Drag & Drop)	Complex	Moderate	Complex
Reliability	Very Stable	Prone to freezing	Crashes on large batches	Stable
Quality Control	Precise	Limited	Basic	Precise
Platform	Win & Mac	Win Only	Mac Only	Win & Mac

FAQ: Batch Converting HEIC Images

1. Does converting HEIC to JPG reduce quality?

Technically, yes, because JPG is a compressed format. However, if you use a high-quality converter like Linraw doImage and set the quality to 90% or higher, the difference is indistinguishable to the human eye.

2. Why can't I just rename .heic to .jpg?

Renaming the file extension does not change the internal file structure. The file will become unreadable. You must perform an actual format conversion.

3. Will I lose the date and location (EXIF) data?

If you use online converters or screenshotting tools, yes. However, Linraw doImage is designed to retain all original metadata, including the date taken and geolocation.

Conclusion

If you regularly work with HEIC photos, the best solution is Linraw doImage that runs on both Windows and Mac. It ensures privacy, speed, and consistent results without relying on internet services.

Our desktop software provides a simple and efficient way to convert HEIC to JPG and other formats—making it ideal for photographers, designers, and everyday users alike.

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