I was in the same situation when my MacBook was out for repair and I had to finish editing photos on a Windows 10 PC. Couldn’t open HEIC files from my iPhone at all, so I had to convert HEIC to JPG quickly without losing quality. After some trial and error, here’s what actually worked for me — two reliable methods that don’t mess with your image quality.
Method (1): TunesBro HEIC Converter (best for bulk, full quality)
If you’ve got a lot of photos and care about detail, TunesBro HEIC Converter is the way to go.
(1) Launch the app and drag your HEIC images into the window.
(2) Set the output format to **JPG** and make sure the quality slider is at **100%**.
(3) Click “Convert” and it’ll process them all locally — no compression, no upload, full EXIF preserved.
I compared before and after versions and honestly couldn’t spot any difference. It’s perfect when you need to **convert HEIC to JPG** safely on your own machine, especially for client or private work.
**Method (2): Use an online site (for a few images)**
You can use the online site to **convert HEIC to JPG** — perfect for a small number of images when you can’t install software. They don’t lose quality in the conversion.
Recommended Sites: CloudConvert.com or iLoveIMG.com
Steps:
(1) Go to the website in your browser (Chrome, Edge, etc.).
(2) Click “Select Files” and choose your HEIC images.
(3) Ensure the output format is set to JPG or JPEG.
(4) Click “Convert.”
(5) Download the converted files.
Only use this for non-sensitive images since you’re uploading them to a third-party server. For personal or client work, desktop software like TunesBro is a lot safer.
Between the two, I stick with TunesBro for large projects — it’s faster, keeps everything offline, and consistently gives perfect results when I need to convert HEIC to JPG without losing quality.