Will every PDF become smaller?
No. Already optimized or mainly text documents may offer little reduction. Compare the actual bytes of the result.
Compress PDF
Compress PDF images and document structure while retaining text.
Choose file
One PDFor drag and drop a PDF here.
PDF · Up to 30MB · 100 pages
Encrypted and digitally signed documents are not supported.Selected file
Compression settings
Images use lossy compression. Strong compression can reduce resolution and the clarity of small text. The entire document is not rasterized.
Savings depend on the file. The original is returned if savings are 1% or less.
Free, no sign-up · Processed on your device without file uploads
Compression result
After downloading, check text, images, colors, and document features. Keep the original separately.
How to use
- 01
Load the PDF
Choose an unencrypted PDF and keep the original. Consider whether it contains photographs, scans or mostly text.
- 02
Choose a compression level
Compare the offered settings. Stronger image reduction can make small text inside scanned images harder to read.
- 03
Compare the saved result
Check the actual size reduction, then reopen the PDF and inspect fine text, pictures, links and page count.
Frequently asked questions
Is this an OCR tool?
No. Compression does not make scanned text searchable.
Why keep the original?
Image compression can lose detail. Keep the original for later edits and check the result before sending it.
Important information
Tool files and calculation inputs are processed in your browser, without uploading them to a processing server.
Keep original files and reopen downloaded results before replacing a working copy.
Tested example
Input and settings
A one-page PDF containing a synthetic test image, using strong compression
Observed result
A smaller PDF with its one-page count retained
What to check
Reduction varies by document. Zoom in to inspect text and image detail.
Examples use synthetic, non-personal test material. Results apply to the inputs and settings shown; different files and devices can produce different sizes, timing and appearance.