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Pricing Blog

PNG to THM

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

There's no real "convert PNG 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 PNG into one. If you have a THM, just rename or convert it to .jpg to view it.

What you can do instead

Convert PNG to JPG

A small, universal photo format that opens everywhere.

PNG → JPG

Convert PNG to WEBP

A modern format with small files at high quality for the web.

PNG → WEBP
Private — never stored Fast & secure Unlimited & free

Related free tools

Image ConverterFree toolPNG to JPGFree toolHEIC to JPGFree toolWEBP to PNGFree tool
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Format details

PNG is a lossless raster format with full transparency. It keeps every pixel intact, making it ideal for logos, icons, screenshots and graphics with sharp edges.

Full namePortable Network Graphics
Developed byPNG Development Group
Released1996
Extension.png
MIME typeimage/png
TransparencyYes

PNG opens in every browser and image viewer, plus Photoshop, GIMP, Preview and Photos.

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 PNG to JPG.

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

Popular free tools

Image ConverterPNG to JPGHEIC to JPGWEBP to PNGResize ImageCrop ImagePNG to WEBPImage Compressor