Edited by Tejas Telkar · Published · Updated
Short answer
Open the HEIC image in Preview and use File → Export with JPEG selected. NotchPop's image converter offers the same output type as part of a local file workflow, with quality and size controls. Changing the filename extension alone does not convert an image.
Choose JPEG for a specific destination
An upload form or older application may accept JPEG while refusing HEIC. Read its requirements first: format, maximum file size and image dimensions are separate constraints. Converting to JPG solves a format mismatch; it does not guarantee that a large photo falls below an upload limit.
Preview is already on your Mac. Open the photo, choose File → Export, select JPEG and save a separate result. Keep the original until you have inspected the new file. This built-in route is a good starting point for an occasional conversion.
Convert through NotchPop
- Open Files in NotchPop and choose Choose image…, or drop a readable HEIC image onto the converter.
- Select JPEG under Save as.
- Choose the quality and keep Original size unless the destination needs fewer pixels.
- Choose Convert to JPEG, wait for the saved result, then use Open or Show in Finder to inspect it.
The converter processes the image on your Mac, keeps the original and adds the output to Shelf. It normally writes beside the input; if that location is not writable, it uses Downloads. Use the reported file name or Show in Finder rather than assuming a file appeared in the folder currently open behind the island.
Inspect quality before sending
Look at fine text, edges and detail in the JPEG. Higher quality can preserve more detail but may produce a larger output. If the destination still rejects the image, check its exact limit and use the resize guide when dimensions are the problem.
A successful conversion is not the same as a completed upload. Select the generated JPG in the destination, let its transfer finish and check the preview there. For several files, use Drop Shelf to keep originals and outputs distinguishable; do not attach both sets accidentally. A damaged or unreadable input needs its own investigation rather than repeated renaming.
Sources and editorial notes
Published by NotchPop, the maker of the app. macOS instructions and third-party claims are linked to the sources below. Settings and offers can change between versions. Read our editorial approach or send a correction.
