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The Images tool in cPanel does three things to images already on your server: creates thumbnails, resizes them, or converts between formats. It runs across an entire directory at once, so it’s built for batch jobs, not one-off edits. Open it from cPanel home → Files → Images.
Images page listing the three tools

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The three tools

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Thumbnailer

Generates thumbnails from every image in a folder. Useful for galleries that need consistent preview sizes. Originals stay untouched; thumbnails save into a sub-folder.

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Scaler

Resizes images in a folder. Pick a width or height and Scaler updates the files in place.
Scaler overwrites originals. Make a backup of the directory first if you want to keep the unscaled versions.

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Converter

Changes the file format of every image in a folder. Classic example: convert a folder of .jpg files to .png. Original files are replaced with the new format.

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When to use which

You want toUse
Generate previews while keeping originalsThumbnailer
Make every image fit a target sizeScaler
Switch all images in a folder to a new formatConverter
For one-off image edits or anything more complex (cropping, color correction), use a desktop tool. The Images section is built for batch operations.

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