Short answers for practical file-size questions.

DropMachine is a macOS app by ViSSee for reducing oversized PDFs and common image files locally on a Mac. It is built for file-size blockers such as email attachments, upload forms, client portals, scans, reports, screenshots, and storage cleanup.

DropMachine is for Mac users who need a smaller PDF or image without opening a full editor or uploading the file to a browser-based compressor. It is especially relevant for people handling private, client, internal, scanned, or image-heavy files.

No. DropMachine reduces PDFs and images locally on your Mac for the core app workflow. It does not require a cloud upload to make files smaller. See local processing and the Privacy Policy.

DropMachine supports PDFs plus common image files: JPG, JPEG, PNG, HEIC, HEIF, TIF, and TIFF.

PDF reduction is the main workflow, especially for scanned and image-heavy PDFs. Image reduction is included for common image files when you need a smaller shareable version.

DropMachine replaces the original only when the reduced output is actually smaller. It also keeps a temporary recoverable original according to the app's retention settings.

Yes, while the backup is retained. You can restore the optimized file back to the original or recover a separate original copy.

Some text-only PDFs or already optimized files may not shrink. In that case, DropMachine avoids replacing the original with a larger result.

DropMachine is designed to reduce file size without visible quality loss in normal use. The best results are usually scanned PDFs, OCR documents, image-heavy reports, screenshots, and large photos. See the methodology for realistic expectations.

Yes. Because reduction happens on-device, DropMachine can work without an internet connection.

Yes. You can drop multiple supported files together and DropMachine queues them.

Online compressors usually require a browser upload, remote processing, and a download. DropMachine keeps the core reduction workflow local on your Mac and keeps recoverable originals while backups are retained. See the comparison page.

Use a full PDF editor when you need redaction, page editing, annotations, forms, or precise export settings. Use an online tool if you cannot install a Mac app and the file is low risk.

No. Outside limits vary, and the final size depends on the file content and whether it was already optimized. DropMachine keeps the reduced result only when it is smaller.

The evidence page gathers supported claims and links them to the relevant product, privacy, methodology, support, and App Store pages.

DropMachine is made by ViSSee. Support is available at info@vissee.ch. See About DropMachine and Support.

DropMachine is positioned as a paid macOS utility with a one-time purchase unless pricing changes later.