Skip to main content

.thumb

THUMB Image Conversion: Batch Convert, Resize & Organize

Contenta Converter PREMIUM lets you open, convert, and batch process THUMB files into modern formats like JPG, PNG, TIFF, PDF, and more.

Download the trial: 10 free images

Contenta Converter results screen showing 32 converted photos and a before and after preview
The results screen of Contenta Converter: 32 photos converted in 47 seconds, with a before and after preview.
  1. Add your THUMB filesDrop in single files or a whole folder.
  2. Pick output formatJPG, PNG, TIFF, PDF and more.
  3. Click ConvertEvery file converted in one pass.

The same photo, five outputs

Photo of a stage set with a bed, a small table and a checked sofaDSC_0001.NEF · 3900×2613
  • PNG.png1.9 s
    16.1 MB
  • AVIF.avif2.2 s
    2.02 MB
  • JPG.jpg1.7 s
    1.69 MB
  • WebP.webp1.7 s
    1.32 MB
  • JPEG XL.jxl1.7 s
    1.12 MB
One Nikon D60 RAW file converted to five formats, at quality 90 where the format has a quality setting. PNG is lossless, so it is the largest. Seconds are the median of three runs. Measured with the Contenta Converter 9.0.35 command line on an AMD Ryzen 9 3900X, 2026-09-30.

Thumbnail files (.thumb) are small preview images generated by various applications and operating systems. They contain reduced-size versions of larger images for quick browsing and preview purposes. Contenta Converter PREMIUM can batch convert thumbnail files to JPG, PNG, TIFF, and other standard formats.

Optimize file size, keep important metadata, and prepare images for web, print, or long-term archiving in just a few clicks.

✓ 100,000+ users worldwide · 100+ formats supported · Free trial, no time limit

格式

THUMB

說明 Thumbnail files (.thumb) are small preview images generated by various applications and operating systems. They contain reduced-size versions of larger images for quick browsing and preview purposes. Contenta Converter PREMIUM can batch convert thumbnail files to JPG, PNG, TIFF, and other standard formats.
優點 Useful for recovering preview images from application caches and backups.
缺點 Contains only low-resolution previews, not the original images. Format varies by source application.

Ready to convert your THUMB files? Download the free trial.

Download the trial: 10 free images

使用者證明:

"今天一定得轉換一些圖像。你的軟件真是救了我一命！謝了！"
Jason Hoffman，加利福尼亞州

"我每天都拍攝RAW圖像。我非常喜歡你的軟件，因為它很省時。"
Jim Richardson，印第安納州

"我一直都在注意圖像轉換器。我發覺你們的軟件乾淨，簡單，而且非常棒！"
Brandon Keegan，紐約州

保證滿意:

簡單又專業的照片轉換以及處理過程
攝影師（業余和專業），設計工作室，建築師，大機構（NASA，IBM，克萊斯勒，大學醫院）所使用的產品。
完全無風險. 購買後，您將獲得一個30天退款保證，絕不多問。
samsungNIKON CORPORATIONPanasonic
Apple

THUMB 圖像優化

怎麼打開THUMB？ 如何處理THUMB？ 如何把THUMB縮小？ 如何減少THUMB的文件大小？ 如何自動重命名 THUMB？ 如何把 THUMB 整理成子文件夾？ 如何重新壓縮THUMB？ 如何用 THUMB 創建一個PDF相冊呢？

THUMB 圖像色彩處理

如何把 THUMB 轉換成黑白圖像？ 如何把 THUMB 轉換成棕褐色圖像？ 如何調整 THUMB 的亮度？ 如何調整 THUMB 的對比度？ 如何調整 THUMB 的伽瑪？ 如何反轉 THUMB 的顏色？ 如何提高 THUMB 的色彩？ 如何增強 THUMB 的對比度？

THUMB 圖像處理

如何在 THUMB 上添加水印？ How to create animated GIF slideshows from THUMB? How to create pencil/ink drawings from THUMB? 如何銳化 THUMB ？ 如何模糊 THUMB ？ 如何重新聚焦 THUMB ？ 如何從 THUMB 去噪熱像素？ 如何裁切 THUMB？ 如何旋轉 THUMB ？ 如何翻轉 THUMB ？

THUMB 圖像標注

如何改變 THUMB 的DPI分辨率？ 如何修改 THUMB 的IPTC/XMP創建和修改日期？ 如何修改 THUMB 的IPTC/XMP說明？ 如何修改 THUMB 的IPTC/XMP位置？ 如何修改 THUMB 的IPTC/XMP法律信息？ 如何修改 THUMB 的IPTC/XMP工作流程（轉狂，緊迫性）？ 如何修改 THUMB 的版權資料？

Frequently Asked Questions about THUMB

What is a THUMB image file?

A THUMB file is a type of image format used in various tools and workflows. With Contenta Converter PREMIUM you can convert THUMB files to more common formats like JPG, PNG, or PDF without losing control over quality.

How do I convert THUMB images to JPG?

Install Contenta Converter PREMIUM, add your THUMB files to the input list, choose JPG as the output format, and click Convert. The software will process all selected files in a single batch.

Can I batch-process many THUMB images at once?

Yes. Contenta Converter PREMIUM is built for batch processing and can handle hundreds or thousands of THUMB images in one operation, using all available CPU cores.

When should I convert THUMB images to another format?

Convert THUMB images when you need better compatibility with web browsers, design tools, or printing services. Exporting to formats like JPG, PNG, or TIFF from Contenta Converter PREMIUM makes sharing and archiving much easier.

Need more than THUMB conversion? Browse supported cameras that produce THUMB files below, or:

See all 100+ formats and features →