Privacy Policy
Last updated: July 2026
The short version
LocalDF does not collect, store, or transmit your files. All PDF processing happens entirely within your browser. We do not know what files you work with, and we have no way of knowing.
Your files
When you drop a PDF onto LocalDF, the file is read into your browser's memory using the File API. It is processed using WebAssembly (Ghostscript for compression) or JavaScript (pdf-lib for merging, organising, and resizing). The resulting file is created in your browser's memory and offered to you as a download. At no point is any file data sent over the network to our servers or any third party. You can verify this yourself using your browser's Network tab.
Analytics
LocalDF does not currently run any analytics. No page-view tracking, no usage metrics, no session recording — nothing. If we add analytics in the future, we will update this policy and use only privacy-respecting tools (such as Umami) that are cookieless and collect only aggregate data.
Cookies
We do not use tracking cookies. We do not use advertising cookies. We do not sell or share your data with advertisers. The only browser storage we use is localStorage to remember your dark/light mode preference.
Third-party services
LocalDF is hosted on Firebase Hosting (Google Cloud). Your browser connects to our CDN to load the website assets. No file data is involved in this connection — only the website code (HTML, CSS, JavaScript, WASM) is delivered. We have no other third-party service integrations.
Encryption note
When you process a password-protected or lightly-encrypted PDF, the output file will not retain the source encryption. This is an inherent behaviour of the editing libraries (pdf-lib, Ghostscript). Do not use LocalDF to process documents where the output must remain encrypted.
Open source
LocalDF is open source. You can review the complete source code on GitHub to verify that no data is transmitted. We believe transparency is the only real proof of privacy.
Contact
Questions about this policy? Email us at privacy@localdf.app.