WEBP to THM

Looking to convert WEBP to THM? Here's the honest answer — and what works instead.

There's no real "convert WEBP to THM" — a THM file is simply a JPEG thumbnail a camera writes alongside a photo or video.

About THM files

1

THM is a JPEG with a different extension

A .thm file is a small JPEG thumbnail cameras save next to a photo or video so devices can preview it quickly. Its contents are identical to a JPG — only the extension differs.

2

Nothing needs converting to it

Because THM is created automatically by the camera, there's no use case for turning a WEBP into one. If you have a THM, just rename or convert it to .jpg to view it.

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Format details

WEBP is a modern Google format using lossy and lossless compression to make images ~25–35% smaller than JPG or PNG at similar quality, with transparency and animation support.

Full nameWeb Picture format
Developed byGoogle
Released2010
Extension.webp
MIME typeimage/webp
TransparencyYes

WEBP opens in all modern browsers and recent Photoshop, GIMP and image viewers.

THM is a small JPEG thumbnail saved alongside camera photos and videos — really a JPEG with a different extension.

Full nameThumbnail Image
Developed byCamera makers
Released
Extension.thm
MIME typeimage/jpeg
TransparencyNo

Rename or convert THM to .jpg to open it anywhere.

Frequently asked questions

Rename it to .jpg, or convert it — it's a JPEG, so any image viewer will then open it.

There's no point: THM is just a camera's JPEG thumbnail. If you need a thumbnail-style image, convert WEBP to JPG.

WEBP converts to JPG, PNG, WEBP, PDF and more — free and instant.