Vector · Browser-first processing
Set the threshold, invert when necessary, and download a crisp PNG mask for design or compositing work.
Select a supported file or enter the requested values, then run the tool.
This browser tool does not upload the selected source to ImgNimble. Closing or refreshing clears the selected files and generated result from the page.
Common questions
Monochrome Mask Maker reads the selected input into browser memory and performs its documented operation on this device. It does not submit the source file to ImgNimble while using this browser-first workspace.
A black-and-white PNG or an alpha-mask PNG.
Fine hair, shadows and semi-transparent edges may need manual cleanup in a dedicated editor.
Monochrome Mask Maker validates the selected file before processing. Use JPG, JPEG, PNG, WEBP, GIF, HEIC, HEIF, SVG within the 40 MB per-file limit. Keep an untouched original for comparison.
The Monochrome Mask Maker workflow runs in browser memory. ImgNimble does not receive the source file for this local operation; refreshing or closing the page clears the selected input and generated in-page result.
Practical checks
Set the threshold, invert when necessary, and download a crisp PNG mask for design or compositing work.
Keep the source, download the Monochrome Mask Maker result as a new file, and verify dimensions, transparency, colour, metadata and visual detail before replacing any production asset.