Local PDF editing - 0 bytes sent
Choose a PDF goal, then keep working if you need more.
Start with merge, split, crop, organize, or print-safe export. Lemmafour loads files locally and opens the wider workspace only when it helps.
Tool workflows
Start with the narrow PDF task.
Merge PDFs
LOAD one or more files, reorder them, choose page ranges, and combine.
Split or Extract
Choose pages, ranges, or output groups before exporting.
Organize PDF
Reorder, rotate, duplicate, delete, and insert blank pages visually.
Compress PDF
Reduce file size locally with low, recommended, or high compression.
Remove Watermark
Click a watermark, logo, header, or footer and remove every copy across all pages.
Images to PDF
Combine local JPG and PNG images into a new PDF.
PDF to Images
Export PDF pages as PNG images and a ZIP package.
Crop PDF
Trim visible margins manually and apply crop boxes locally.
Prepare to Print
Check margins, page size, orientation, and color risks.
Private by architecture
PDF bytes stay in this browser for local processing. Loaded files and generated outputs can be stored on this device for refresh recovery, and you can clear them from the workspace controls.