Many portals cap uploads at 1 MB, and some mail systems turn away large attachments.
PDF Toolkit
Compress PDF to 1 MB
Bring a PDF under 1 MB for portals and inboxes with strict limits. Scans and photos are recompressed only as far as needed, and the pages stay searchable.
Compressed on your device, so the document never passes through a server.
Free, no signup, no upload — PDFs are processed on your device.
Compress to a size
Why it helps
Why use this for a 1 MB limit
Large scans and photo-heavy reports usually shrink the most.
The file stays on your device while it is compressed.
How to use it
How to compress a PDF to 1 MB
1 Drop the PDF into the tool. Under 1 MB is already selected.
2 Press Compress: images are recompressed only as much as needed.
3 Check a page in the comparison slider and download the result.
Quick tips
Tips for a 1 MB limit
Photos are brought down to a resolution that still looks sharp on screen.
If the PDF includes pages you don't need to send, split them out first.
Check a page with photos in the comparison slider before you send.
FAQ
Compress PDF to 1 MB questions
Will my PDF look worse?
Only images are recompressed, and only as much as needed to fit under 1 MB. Text and drawings stay exactly as they were.
Can a 50 MB PDF get under 1 MB?
Sometimes. A PDF that is large because of a few big photos can shrink a lot. One with many scanned pages may not fit without becoming unreadable, and the tool tells you when that happens.
Is my file uploaded?
No. The whole job runs in your browser.
Open the main PDF Toolkit page
This page focuses on one search intent. The main tool page includes the broader product overview, related workflows, and full use cases.