Reduce PDF file size with basic structural optimization.
All processing happens in your browser. Nothing is uploaded.
or drag and drop a PDF here
Select or drop the file you want to shrink. If it is password-protected, unlock it in the on-page prompt first.
Click Compress & Download. The tool runs a structural optimisation: unused objects are dropped and the file is saved more tightly. It does not re-encode photographs at a lower quality.
Check the new file opens cleanly and that the size is smaller. If it barely changed, the PDF may already be lean, or most of its weight may be in images, which this method does not recompress.
Compression runs in your browser. The PDF is not uploaded for “cloud optimisation,” which matters when the file holds invoices, medical letters or marked-up work you would rather keep on the device that already has it.
Most of the size may be in images, or the file may already be optimised. This tool removes unused objects; it does not recompress pictures.
No. Text and vector art are not turned into images. If a file does shrink, the pages should look the same.
No. Optimisation happens in your browser. The document never leaves your device.
There is no fixed cap, but a very large PDF may be limited by the memory available to your browser.
Yes, if you have the open password. Enter it when asked; it is not sent to a server.
Yes, until you have opened the download and are happy with it. Compression creates a new file and does not overwrite the source.