Bulk Lighten Image Free
Runs 100% in your browser — your files never leave your device.
Brighten a folder of dim photos, lift a whole set of product images, or unify the exposure across many shots. One lightening amount is applied to every image, and the whole batch runs locally on your device with no upload.
How it works
- 1
Add your images
Drop one or more JPG, PNG, or WebP files into the box. Nothing is uploaded.
- 2
Lighten the batch
Set the control once — it is applied to every file in the batch.
- 3
Download the results
Process the batch, then download each edited image individually.
About this tool
Batch lighten workflows
Brighten a folder of dim indoor photos, lift a whole set of product shots so backgrounds read clean, or unify the exposure across a mixed gallery so no single image looks underlit next to the others. For one image at a time, the single-image lighten tool does the same job.
One setting, every file
One lightening amount drives the whole batch: set it once and every image receives the identical lighten treatment — the same pipeline the single-image version runs, applied to each file in turn. Nothing is uploaded: the batch is processed on your device, originals are never modified, and you download each finished image individually in its original format.
Frequently asked questions
How many images can the batch handle?
As many as your browser can hold in memory — dozens of typical photos are routine. Very large batches simply take proportionally longer, and every file is processed on your own device.
Is the batch result identical to the single-image lighten tool?
Yes — every file runs through the same lighten pipeline as the single-image version. One setting drives all of them; nothing is averaged or compromised across the batch.
Will batch lightening make white backgrounds look gray or blown out?
Neither, at moderate amounts — white stays white and dim areas lift toward it. Push too far and the whites stay white while everything else washes out, so judge the batch on its darkest file first.