Convert THM to PNG Online

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Total Image Converter To Convert TIFF, JPEG, ICO, BMP

Convert Images in Batch!;
Convert THM to PNG and in many other formats
Process hundreds of files in 3 clicks;
Have a desktop converter that works without Internet;
Keep your files safe, don't send them to the web;
Get a more poweful engine for large images and RAW photos.

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Total Image Converter

JPEG, TIFF, PSD, PNG, etc.

Total Image Converter supports the widest list of output file types: PDF, TIFF, BMP, PNG, JPEG, JPEG2000, ICO, GIF, PCX, TGA, PXM, PS, PCL! Besides, it converts many rare formats like PALM, PICT, XPM, FIX.

Rotate Images

Along with conversions you can rotate your images! All is done in batch so you save a lot of your valuable time.

Resize Images

With Total Image Converter it's very easy to resize your photos or images in batch. Make them suitable for the web or emailing.

RAW photos

Total Image Converter supports almost all RAW camera photos (CRW, CR2, NEF, PEF, RAF, X3F, RAW, BAY, ORF, NRW, SRF, MRW). Save them as TIFF or JPEG files for easy publishing or sharing.

Watermarks

Add text watermarks to the header or the footer of the output file to prevent unauthorized use.

Clear interface

The inerface of the pss is clear and straightforward. The built-in Preview panel helps you to view each file full-sized and learn the info about it.

Command line

Total Image Converter can be run via command line (get the ready-to-use BAT file from GUI settings).

How to convert THM to PNG?

💾 Upload Your File: Go to the site, click on «Upload File,» and select your THM file.

✍️ Set Conversion Options: Choose PNG as the output format and adjust any additional options if needed.

Convert and Download: Click 👉«Download Converted File»👈 to get your PNG file.

Cloud Based

There is no need to install any software to convert THM to PNG with CoolUtils. Simply access the internet, and you can easily convert your file online with our service.

Secure

Our hardware operates in top-tier, highly secure data centers equipped with advanced electronic surveillance and multi-factor access control systems.

Ease of Use

Convert THM to PNG online in seconds. THM is the JPEG thumbnail a camera saves beside a shot; this free converter decodes it and writes PNG — a lossless web image with transparency. No software to install, no watermark.

Privacy

We understand the importance of privacy, which is why we've developed a comprehensive privacy policy detailing how we handle your files and personal information. You can read the policy here.

THM File

File extension	.THM
Category	Image File
Description	THM is a file extension used for different purposes, primarily as a thumbnail image file generated by digital cameras or as a theme settings file for certain applications.
Associated programs	IrfanView, XnView, Windows Photos, Sony PlayMemories, Canon ZoomBrowser
Developed by	Various Developers
MIME type	image/x-thumbnail
Useful links
Conversion type	THM to PNG

PNG File

File extension	.PNG
Category	Image File
Description	PNG images provide lossless compression, that is why the quality of the picture is nice, but the size of the file is huge. Because of it this file format is used by photographers. PNG may have several layers of transparency and even include short text descriptions which help search engines to examine the file. Although PNG was developed to replace GIF and partly other formats, it doesn’t support animation since it can’t contain several images like GIF.
Associated programs	Apple Preview Corel Paint Shop Pro GIMP - The GNU Image Manipulation Program (LINUX) Microsoft Windows Photo Gallery Viewer Safari
Developed by	PNG Development Group
MIME type	image/png
Useful links	More detailed information on PNG files

2024-01-14

No other tool comes close to the speed and accuracy of this one.

Alex Garcia

2022-07-06

The best

Daniela

Rating THM to PNG

4.9 (2205 votes)Rate It

THM to PNG Converter — Frequently Asked Questions ▼

What is a THM file?

THM is a JPEG thumbnail automatically saved by digital cameras and camcorders alongside video clips. It is a small preview image — typically 160×120 pixels — stored under a .thm extension so media software can show a still frame. Web browsers and most image applications ignore the .thm extension.

How do I convert THM to PNG online?

Upload your .thm file using the button above. The converter decodes the JPEG thumbnail data and writes a lossless PNG file ready to download. No software installation is required.

Does converting THM to PNG improve the image quality?

No. The THM file was already compressed as JPEG when the camera saved it. Converting to PNG stores those pixels losslessly going forward, but it cannot recover detail that JPEG compression already removed. The PNG will look identical to the THM thumbnail.

Why choose PNG over JPG for this conversion?

PNG is lossless, so no additional compression artifacts are introduced during conversion. If you plan to edit or re-save the image further, PNG avoids generational quality loss. For web display where file size matters more than editing flexibility, JPG is also a good option.

Can I batch-convert many THM files to PNG at once?

Online conversion handles one file at a time. For batches, use Total Image Converter on your desktop: TotalImageConverter.exe C:\thm_files C:\png_out /ConvertTo png /ProcessRecursively converts an entire folder in one run.

What is the maximum file size for online conversion?

The online converter accepts files up to 50 MB. THM thumbnail files are almost always under 100 KB, so file size is never a concern.

Are my uploaded files kept private?

Uploaded files are deleted automatically after you download the result. They are not stored, indexed, or shared.

Convert THM to PNG — Make Camera Thumbnails Usable Online

THM files are the small JPEG preview images cameras write beside video clips. The .thm extension is ignored by browsers, CMSs, and most image editors. PNG is a lossless format understood everywhere — on the web, in design tools, and on every operating system. Drop your .thm file above.

What Is THM?

THM is a thumbnail image file saved automatically by digital cameras and camcorders when they record video. It is a standard JPEG stored under a .thm extension — typically 160×120 pixels — so media cataloguing software can display a still without loading the full clip. Canon, Sony, and other manufacturers use this convention. Because of the non-standard extension, web browsers, design applications, and CMS platforms do not recognize or display .thm files.

What Is PNG?

PNG (Portable Network Graphics) is a lossless web image format supported natively by every browser, operating system, and image editing application. It uses deflate compression to reduce file size without discarding any pixel data, and it supports full 8-bit alpha transparency. PNG is the standard choice for logos, UI elements, and any image where exact pixel fidelity and web compatibility both matter.

THM vs PNG — Format Comparison

Property	THM	PNG
Underlying format	JPEG (lossy)	Lossless (deflate)
Browser support	None	Universal
Transparency	No	Yes (full alpha)
Quality at conversion	Already compressed	Stored losslessly from source
Color depth	24-bit	Up to 48-bit
Typical size	Very small (thumbnail)	Small to medium
Primary use	Camera video preview	Web graphics, design, UI

When Do You Need THM to PNG Conversion?

Upload a video preview thumbnail to a website or CMS that requires PNG or JPEG input
Use a camera still as an avatar or cover image on a platform that rejects .thm files
Import a THM thumbnail into Photoshop, GIMP, or another editor that ignores the .thm extension
Embed a video preview frame in a web page as a clickable thumbnail link
Convert a folder of camera thumbnails to PNG for a media asset library
Create PNG versions of video stills for use in a slideshow or digital display

Command-Line Conversion

Batch-convert an entire folder without opening the interface:

TotalImageConverter.exe C:\thm_files C:\png_out /ConvertTo png /ProcessRecursively

Save the command in a .bat file for scheduled or automated runs. Total Image Converter also exposes ActiveX/command-line options for server use.

Online vs Desktop

Feature	Online (this page)	Total Image Converter (desktop)
File size limit	50 MB	Unlimited
Batch conversion	One file at a time	Entire folders at once
Software install	None required	Windows 7–11
Output options	Standard	Full control
Command-line	No	Yes
Privacy	File uploaded to server	Stays on your computer
Price	Free	From $29.90

Convert from THM

Using CoolUtils, it is possible to convert THM files to a variety of other formats:

THM to JPG

Converted Files:

154,773,506 / 4,723 TB

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Convert THM to PNG Online