Compress PDF to 1MB
Get big PDFs under 1 MB for email attachments and upload limits. Tries lossless optimization first, then compresses scans. Free and 100% in your browser.
- No upload — 100% private
- Instant, on your device
- Free, no sign-up
- Works offline once loaded
How it works
How to use Compress PDF to 1MB
Drop your large PDF into the box.
The target is set to 1 MB (1024 KB) — change it if your limit is different.
Click Compress PDF, then download the smaller file.
Why use it
Why use our Compress PDF to 1MB tool
Made for big files
Phone scans and photo-heavy reports of many megabytes shrink to fit a 1 MB limit.
Best quality under the cap
With 1 MB of room, pages stay sharp — we only reduce as much as needed.
Email-friendly
Smaller attachments send faster and won't bounce off strict mail servers.
Cancel any time
Long documents show progress per page, and you can stop and change settings.
Your data stays local
Large files aren't uploaded anywhere, which is also faster on slow connections.
FAQ
Frequently asked questions
Is 1 MB 1000 KB or 1024 KB?
We use 1 MB = 1024 KB, the same as Windows and most upload forms. A file shown under 1 MB here passes a 1 MB check.
Why is my scanned PDF so large in the first place?
Phone scanners often save every page as a full-resolution photo of several megabytes. Re-saving those images at document resolution is what makes the big difference.
Will charts and small print stay readable?
At 1 MB most documents keep a resolution high enough for small text. If a very long document gets soft, split it into parts first.
Does it work for a 50 MB PDF?
Yes, as long as your device has enough memory — everything is processed locally. On phones, very large files can be slow; a computer handles them best.
Related tools
Compress PDF to 500KB
Keep longer documents readable and under 500 KB.
Split PDF
Extract page ranges or split a PDF into separate files.
PDF to JPG
Save every PDF page as a sharp JPG or PNG image.
Compress Image
Shrink JPG, PNG and WebP files without visible quality loss.
Merge PDF
Combine PDFs into one file, in any order you like.
JPG to PDF
Turn photos and scans into one tidy PDF.
Rotate PDF
Fix sideways or upside-down pages and save a new PDF.
Organize PDF
Reorder, delete, duplicate and insert pages visually.