Free online PDF tool
Compress PDF Online Free
Make PDF files smaller for email, uploads, and sharing. Choose safe optimization for normal PDFs or image compression for scanned PDFs when you need a smaller file.
Select files
Drop files here or choose from your device.
File privacy and limits
This tool is designed to process files in your browser where possible. That means your selected files are handled on your device instead of being uploaded to a We Love Free PDF server.
Very large PDFs can still be slow because your browser has to do the work. For a smoother experience, use smaller files when possible and always check the downloaded result before sharing it.
How to use Compress PDF
- Upload your PDF file.
- Choose a compression level.
- Click Compress PDF and compare the new file size.
Why use this tool?
How PDF compression works and why results are different
PDF compression reduces file size by optimizing images, removing unnecessary data, and rebuilding the document more efficiently. The final saving depends on what is inside the file. A PDF made from large scanned photos can shrink a lot, while a mostly text-based PDF may already be small. If your file has images, signatures, and scans, choose a balanced quality level so the document stays readable.
The best compression setting depends on where the file is going. Email attachments, school portals, government forms, and job applications often have strict upload limits. Use Compress PDF to reduce size, then open the result and zoom in on text, signatures, stamps, and small table numbers before sending it.
How to keep text readable after compressing
Readable text matters more than the smallest possible file. If the PDF contains contracts, invoices, bank statements, certificates, or application forms, avoid over-compressing. Look closely at fine print, logos, handwritten signatures, and scanned seals. If they become blurry, use a lighter compression setting or split unnecessary pages with Split PDF before compressing.
For image-heavy documents, resize or compress images before creating the PDF when possible. If the source files are JPGs, use JPG Compressor first. If the PDF has many pages but only a few are required, remove extra pages before compression. Smaller, cleaner input files usually produce better output than forcing heavy compression on a cluttered document.
What to do if a PDF is still too large
If a compressed PDF is still above the upload limit, check whether every page is necessary. Removing blank pages, duplicate scans, and old drafts often saves more space than another compression pass. The Remove Pages and Organize PDF tools help you clean the file visually before trying again.
For files with several separate sections, consider sending multiple smaller PDFs instead of one oversized document. You can split the document into chapters or categories, compress each output, and name the files clearly. This keeps quality higher and makes the documents easier for the receiver to review.
Balancing upload limits with document quality
Many websites only mention a maximum file size, but they still need the uploaded PDF to be readable. If your file is a form, certificate, receipt, or legal document, do not chase the smallest possible size at the cost of clarity.
A good workflow is to remove unnecessary pages first, compress the cleaner file, and then review the result at 100 percent zoom. If the file is still too large, split it into separate sections instead of destroying image quality with repeated compression.
Compress PDF FAQ
Why did my PDF not become much smaller?
Some PDFs are already optimized. Try scanned PDF compression for image-heavy files, but remember it turns pages into images.
Will compression damage my PDF?
Safe optimization keeps the PDF structure. Scanned PDF compression creates image pages, so always check important files after download.
Can I compress PDF for email?
Yes. This tool is designed to help make PDFs easier to email or upload.
Will compressing a PDF reduce quality?
It can reduce image quality if strong compression is used. For official documents, choose a balanced setting and check the downloaded PDF before sharing it.
Why did my PDF not shrink much?
Some PDFs are already optimized or contain mostly text. In that case, removing extra pages with Remove Pages may reduce size more than compression alone.