Available · Version 1.2.1
LumePDF
Your PDFs stay with you.
Organize, split, convert and edit PDF files directly in the browser. No mandatory account and no upload of your documents to the LumeOS website.
Local processingNo document uploadOpen source
LumePDFProcessed locally
🔒Files remain in this browser session
A practical PDF workspace
Common PDF tasks in one local-first application.
LumePDF focuses on useful operations that can run in the browser, with clear limits when a feature cannot preserve every advanced PDF structure.
Merge and organize
Combine files, reorder pages, rotate, duplicate, remove and add blank pages.
Split and extract
Export ranges, selected pages or groups as separate PDF files.
PDF and images
Create PDFs from images or export PDF pages to PNG and JPG.
Watermarks and numbering
Add text watermarks, page numbers and document metadata.
Fill and sign visually
Fill supported form fields and place text or a visual signature image on a document.
Crop and compress
Adjust visible page margins and reduce the size of image-heavy documents.
Local-first by design
The website delivers the app. Your document work happens in the browser.
LumePDF reads the files selected on your device and performs supported operations in the browser. Closing or refreshing the page removes open files from the application memory.
Your device→Browser processing→Your exported file
Inspect and host it
LumePDF 1.2.1 source package.
Download the same public release, inspect its code and host it on your own compatible web server.
SPDX-License-Identifier: AGPL-3.0-onlyLumePDF FAQ
Know what local PDF processing can and cannot do.
Are my PDFs uploaded?
LumePDF is designed to process selected documents in the browser. The LumeOS website does not receive their contents.
Is the visual signature a certificate-based digital signature?
No. It places a visual image or text on the PDF. Certificate-based signing requires a separate cryptographic workflow.
Will every complex PDF remain identical?
Basic organization normally preserves the original pages. Compression, form flattening and some conversions can change searchable text, links, forms, layers or signatures.
Ready when your PDF is
Open LumePDF