DropCheck100% in-browser, nothing uploads

File forensics

Every file has a story its extension doesn't tell.

DropCheck reads the actual bytes of your images, fonts, and PDFs — what a file really is, where it will break, and what it's leaking. Then it fixes what it can.

Drop files here

Images (JPEG, PNG, HEIC, WebP, TIFF, PSD…), fonts (OTF/TTF/WOFF), and PDFs. Analysis is instant and local.