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.ithmb

ITHMB file: what it is and what can be recovered from it

An .ithmb file is a photo thumbnail cache that iTunes and older iPods and iPhones build when photos are synced.

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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 ITHMB 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.

Each file holds several small previews stored as raw pixel data, not your full-size photos. Contenta Converter reads all common layouts and saves every preview in the file as its own JPG or PNG.

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Định dạng

ITHMB

Công ty

Apple
Mô tả An ITHMB file is an Apple photo cache that iTunes and older iPods and iPhones build when photos are synced. It is not a JPEG: each file holds several thumbnails stored as raw RGB565 or YCbCr pixels, with no image header. Contenta Converter decodes all common layouts and saves every thumbnail in the file as its own JPG or PNG.
Lợi ích Can be used to recover photo thumbnails from old iPhone/iPod backups.
Drawbacks Contains only low-resolution thumbnail previews, not the original full-size photos. The .ithmb extension is not recognized by most image viewers.

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ITHMB image organization

Làm thế nào để mở ITHMB? Làm thế nào để xử lý ITHMB? Làm thế nào để teo ITHMB? Làm thế nào để giảm bớt ITHMB? Làm thế nào để đổi tên tự động ITHMB? How to organize ITHMB in sub-folders? Làm thế nào để recompress ITHMB? Làm thế nào để tạo một anbom ảnh PDF từ ITHMB?

ITHMB image color processing

Làm thế nào để chuyển đổi từ ITHMB để trắng đen? Làm thế nào để chuyển đổi từ ITHMB để Màu nâu đỏ? How to adjust the brightness ITHMB? How to adjust the contrast ITHMB? How to adjust the gamma ITHMB? How to invert the colors of ITHMB? How to boost colors from ITHMB? How to boost the contrast from ITHMB?

ITHMB image processing

Làm thế nào để thêm một watermark để ITHMB? How to create animated GIF slideshows from ITHMB? How to create pencil/ink drawings from ITHMB? Làm thế nào để sharpen ITHMB? How to blur ITHMB? How to refocus ITHMB? How to denoise hot pixels from ITHMB? How to crop ITHMB? How to rotate ITHMB? How to flip ITHMB?

ITHMB image annotation

How to change the resolution in dpi of ITHMB? How to modify the IPTC/XMP creation and modification dates of ITHMB? How to modify the IPTC/XMP description of ITHMB? How to modify the IPTC/XMP location of ITHMB? How to modify the IPTC/XMP legal information of ITHMB? How to edit the IPTC/XMP workflow (status and urgency) of ITHMB? How to edit the IPTC/XMP copyright of ITHMB?

Frequently Asked Questions about ITHMB

Does an ITHMB file contain my original photos?

No. It holds several small thumbnails that iTunes and older iPods and iPhones build when photos are synced, stored as raw RGB565 or YCbCr pixels. The full-size photos are not in it.

Can I rename an .ithmb file to .jpg?

No. Unlike a THM file, an ITHMB file is not a JPEG and has no image header, so a new extension does not make it open. It has to be decoded.

What does Contenta Converter get out of an ITHMB file?

It decodes all common layouts and saves every thumbnail in the file as its own JPG or PNG, for a whole folder at once.

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

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