DocShrink – Offline Document Compressor

Users need to compress images and PDFs to meet upload size limits but worry about uploading sensitive documents to random websites. DocShrink is a Chrome extension that compresses, resizes, and converts files entirely client-side in your sidebar. Perfect for anyone handling IDs, transcripts, or photos that need to fit strict file size requirements.

Privacy-first, client-side tooling is getting real traction as users grow more cautious about feeding sensitive documents into web services — especially post-GDPR enforcement and a string of high-profile data leaks from small SaaS tools. Smallpdf and ilovepdf dominate the online compression space but explicitly process files server-side, which is exactly the friction point this targets. The $500–2k/mo revenue band is realistic for a paid extension with a one-time or low-cost subscription model, since willingness to pay is directly tied to the value of not leaking a passport scan — but the ceiling is genuinely low because most users hit this problem infrequently. The biggest risk is that browser File System Access APIs and WASM-based compression are well-documented enough that a motivated user can replicate the core functionality with a free Squoosh tab or a quick Python script, keeping the addressable market thin and price-sensitive.