Compress PDF Online for Free

This page is configured for a 1MB PDF limit used by email, forms and document portals.

picture_as_pdfChoose or drop a file herePDF · up to 40 MBChoose file

Target size

Compression modeBalancedStrongStrong compression can flatten pages into images for a smaller file.

lockProcessed privately in your browser

How it works

1
Choose a PDF from your device.
2
Select balanced or strong compression.
3
Process and download the smaller PDF.

Frequently asked questions

Is this PDF compressor free?add

Yes. You can use it without an account.

Is my PDF uploaded?add

No. Processing runs in your browser.

What does strong compression do?add

It can rebuild pages as compressed images. This often makes files smaller but selectable text may be lost.

PRACTICAL SIZE GUIDE

What a PDF target means

target

Best used for

Set the maximum PDF size required by an email, form or document portal.

tune

How SmallMB reduces the file

Balanced mode optimizes the existing PDF first. If that cannot meet the limit, strong mode can rebuild pages as compressed images; selectable text may be lost.

fact_check

Before you upload

Open every page of the downloaded PDF.
Check names, numbers, stamps and signatures at normal zoom.
Keep the original because strong compression may flatten selectable text.

verifiedTool guidance maintained by Naman Labs · Reviewed September 2026 · SmallMB