About
A PDF compressor that keeps your files to itself
Shrinklyy is a free, browser-based PDF compression tool designed with one principle in mind: your files should stay on your device. Unlike most online PDF tools that ask you to upload documents to a remote server, Shrinklyy processes everything locally using your browser's own capabilities.
Our Mission
We believe PDF compression should be fast, private, and accessible to everyone. Our mission is to provide a high-quality PDF compression tool that respects your privacy, requires no account, and never stores your files. Whether you're compressing a resume, a contract, or an academic paper, Shrinklyy ensures your document stays yours.
Why We Built Shrinklyy
Most online PDF tools operate on a flawed model: you upload a private document to a server, trust them to delete it, and hope nothing goes wrong. We found this unacceptable for documents that are often sensitive contracts, ID scans, financial records, and medical forms. Shrinklyy was created to offer a genuine alternative: compression that never requires you to give up control of your files.
Technology
Shrinklyy leverages modern web technologies including pdf-lib and pdf.js to process PDFs directly in your browser. There is no backend server involved in the compression process. Everything from file analysis to image optimization and font subsetting happens client-side, which means your files never travel over the network.
What We Offer
Browser-Based Processing
Your files are processed locally using your device's own power and never leave your computer or phone.
Privacy First
No accounts, no sign-ups, no tracking. We don't store or transmit your documents.
Client-Side Technology
Powered by industry-standard PDF libraries (pdf-lib, pdf.js) running entirely in your browser.
Instant Downloads
Compressed files are available immediately. No waiting for server processing or email delivery.
Completely Free
Compress unlimited PDFs with no watermarks, no limits, and no hidden charges.
Works Everywhere
Compatible with Chrome, Edge, Firefox, and Safari on both desktop and mobile devices.
Supported Tools
Shrinklyy offers five PDF compression tools designed to meet different needs. Each tool processes your PDF entirely in your browser:
How Shrinklyy Protects Your Privacy
Shrinklyy's privacy advantage comes from its architecture. Since all PDF processing happens in your browser using client-side JavaScript, your files are never transmitted over the internet. There are no servers storing your documents, no databases logging your activity, and no third parties with access to your data. When you close the tab, your file data is gone. This architecture makes Shrinklyy one of the most private PDF compression tools available online.
Roadmap
Shrinklyy is actively maintained and new features are added based on user feedback. Upcoming developments include image compression tools for JPG and PNG files, batch PDF processing, and additional compression presets. We are committed to keeping the core service free and private.
Independent & Sustainable
Shrinklyy is built and maintained independently. The service is funded through non-intrusive advertising to keep all compression tools free for everyone. We do not sell user data, require accounts, or place watermarks on your files.
Contact us
hello@shrinklyy.comHave questions or suggestions? We'd love to hear from you. Visit our Contact page or check the FAQ section for quick answers.