Extract the embedded thumbnail from a HEIC file
Many HEIC files carry a small embedded preview. This tool finds it through the file's own thumbnail reference, shows it, and saves it as JPG or PNG. If there is none, it says so.
Drop HEIC photos here, or pick them from your device
Stays on your device. Nothing is uploaded.
Processing on this device
How to use it
- Drop a HEIC file onto the page.
- The tool looks for thumbnail items linked through the thmb reference.
- Preview what it found.
- Download it as JPG or PNG.
What it keeps
- The original HEIC, untouched.
- The thumbnail as the file stored it, at its own size.
What it removes or changes
- The thumbnail is small. It is not a stand-in for the full photo.
- Saving it as JPG is lossy. PNG is not, though 8-bit.
Limits
- Many files have a thumbnail, but not all. When none exists, the tool explains that.
- Thumbnails in the file may be far smaller than the main image, so they suit previews, not printing.
- For all embedded images at once, use Extract images from HEIC.
Compatibility
A thumbnail can be a lifeline for a damaged file when the main image will not decode, and it is useful for quick previews or cataloguing. Output as JPG or PNG opens anywhere.
Privacy
The thumbnail is read and converted in your browser. The file is not uploaded.
Thumbnail, full conversion or repair
A thumbnail is a quick, small stand-in. A full conversion produces the real image at full size. Repair tries to recover what it can from damaged files, including thumbnails as a last resort. If the file is healthy, convert it instead of extracting a thumbnail.
Troubleshooting
No thumbnail was found.
The file has none. Some exports and edits strip it. Use the viewer or a converter for the full image.
The thumbnail is tiny.
That is its stored size. It cannot be enlarged without blur.
The main image is broken but a thumbnail exists.
Extract it, or run Repair HEIC, which also tries tiles and a thumbnail.
Frequently asked questions
Does every HEIC have a thumbnail?
No. Many HEIC files carry one, but not all do. When there is none, the tool tells you so.
What formats can I save as?
You can download the thumbnail as a JPG or a PNG. PNG adds no further loss, JPG is smaller.
Will it be full resolution?
No. It is the small embedded preview.