Compress PDF size
Use our free PDF compressor to compress large files for easy sending.
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Get more docs done with our digital toolkit
![Reduce PDF size]()
Reduce PDF size
Some files are too big to send. Lumin can change that. Compress your PDFs into a sendable file size in seconds.![Compress quickly]()
Compress quickly
Our free PDF compressor isn't just easy to use - it's also fast. Get bulky files on their way in no time.![Compress, don't corrupt]()
Compress, don't corrupt
Creating .zip files from your desktop can go wrong. Save yourself the headache of a corrupted .zip file and use our free Compress tool.
More impact, less admin.
Compress PDFs for free.
How to compress a PDF
Sign up
Head to Lumin Tools, a sub-site of Lumin, and create a free account. Select the Compress tool.
Add files
Drag and drop your files or upload them straight from Google Drive, Dropbox or your computer.
Download
Done! Once your PDF file size has reduced, you can download your finished file or save it to your preferred document storage solution.
One platform for all your PDF tools
Bring work to life with our comprehensive suite of PDF editing tools. Share, edit and comment on documents in the cloud.
Edit PDF text
Edit PDF text directly without converting your document
eSign a PDF
Create a unique eSignature for quick signing
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Build fillable forms to make paperwork easy
Merge PDF files
Combine multiple documents to create a single PDF
Collaborate live
Share feedback, action items and edit documents in real-time
Mark-up PDFs
Draw, add shapes, text, highlights, images and more
Convert to PDF
Convert your Word, Excel, JPG or PPT files into PDFs
Unlock a PDF
Gain access to password protected files in just a few clicks
Split PDF files
Split and extract information into multiple PDF files
PDF Reader
Open PDF documents on your browser, desktop, mobile or tablet
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Make scanned text readable and searchable with OCR
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Lumin integrates with Google: use it from Drive, Classroom and Gmail
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Find, fill and sign 5,000+ free online forms and templates
Explore our plans
Free
For casual users trying out Lumin
$0 USD
$0 USD
- Annotate 3 docs
- Digitally sign PDFs
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Pro
For busy professionals or small teams
$19 USD
Per month, per team
$19 USD
Per month, per team
- 30 docs per month team-wide
- Edit PDF text
- Split documents
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Frequently asked questions
What is Lumin vs Lumin Tools?
Lumin Tools is a sub-site of Lumin hosting more advanced editing features such as the PDF Unlocker tool, OCR reader, Convert, Compress and more. Both sites are completely free to use.
Is Lumin free?
Sure is! Lots of our tools are free. You can draw on PDFs, comment on them, add text, signatures and images; all the basics are covered.
Our paid plans expand your toolkit: you can edit PDF text, redact information, create fillable fields and much more. Discover our plans to learn which one is the right fit for you.
How do I use Lumin?
Lumin works on your browser, or you can download our desktop app and keep Lumin handy on your computer. We’ve also got a mobile and tablet app which includes Lumin’s most popular features.
Can I just compress a PDF and go?
Yes. You need to create an account in order to use Lumin Tools, but it’s easily done and you’ll be compressing files in no time. You’ll have a range of other PDF features at your disposal too, should you choose to explore them.
Why is compressing better than zipping?
When you zip a PDF file and send it from person to person, your files have a higher chance of becoming corrupt along the way. Lumin’s Compress tool is fast, easy and free, saving you time and peace of mind.