Bulk Grayscale Image Converter Free
Runs 100% in your browser — your files never leave your device.
Archive a photo set in monochrome, normalize product shots, or prep dozens of images for a print run in a single pass. Drop as many JPG, PNG, or WebP files as you like — the grayscale is applied to every one, and nothing ever leaves your device.
How it works
- 1
Add your images
Drop one or more JPG, PNG, or WebP files into the box. Nothing is uploaded.
- 2
Grayscale 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 grayscale workflows
Archive a photo set in monochrome, normalize a product catalog to one neutral look, or prep dozens of images for a print run in a single pass. Photographers batch-grayscale event galleries; designers use it to judge a whole layout without color pulling attention. For one image at a time, the single-image grayscale tool does the same job.
One setting, every file
One brightness check drives the whole batch: set it once and every image receives the identical grayscale 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 grayscale tool?
Yes — every file runs through the same grayscale pipeline as the single-image version. One setting drives all of them; nothing is averaged or compromised across the batch.
Does batch grayscale handle mixed image sizes?
Yes — each file is converted independently at its own resolution. A folder of mixed portraits, panoramas, and thumbnails all come out consistently black and white, each in its original dimensions.