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Compress PDFs

Upload a PDF and try to reduce its file size by rebuilding the PDF, removing basic document metadata, and saving it with compressed object streams directly in your browser.

Compress a PDF File

Upload PDF File

Select one PDF file. Browser-based compression works best on PDFs that can be rebuilt smaller.

Compression Mode

Output File Name

Main Result Format

Download Mode

Compressed PDF = original PDF rebuilt and saved with smaller browser-friendly settings

Your compressed PDF result will appear here.

How the compress PDFs tool works

Upload a PDF:
Select one PDF file from your device.

Choose compression:
Select a compression mode. Standard compression is best for most files.

Download result:
The tool rebuilds the PDF and downloads a new compressed version when possible.

Why use a PDF compressor?

A PDF compressor is useful for reducing file size before emailing, uploading, storing, or sharing reports, forms, applications, contracts, receipts, documents, and attachments.

Browser-based compression is helpful for simple PDFs, but heavy image compression usually requires a more advanced server-side PDF compressor.

Compress PDF tips

Use standard compression first for the best general result.
If the compressed file is larger, keep the original PDF instead.
Scanned PDFs and photo-heavy PDFs may not shrink much with browser-only compression.
Protected or encrypted PDFs may fail to compress.
Open the compressed PDF after download to confirm it looks correct.

Frequently asked questions

How do I compress a PDF?

Upload a PDF, choose a compression mode, and click Compress PDF. The tool will rebuild the file and download a new PDF.

Why did my PDF not get smaller?

Some PDFs are already optimized. Scanned PDFs and image-heavy PDFs often need true image recompression, which this simple browser tool may not fully provide.

Does this upload my PDF to a server?

This page uses browser-based JavaScript to process PDFs on your device. The PDF does not need to be uploaded to your server for this tool to work.

Can compressed PDFs lose quality?

This browser version mainly rebuilds the PDF structure and removes basic metadata. It does not heavily reduce image quality like some advanced compressors.