How to Compress a PDF
Compressing a PDF takes three steps and thirty seconds — no software, no account to start. Here is the complete method, including hitting an exact size when a form demands one.
- 1Upload
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Drag & drop your file here
or click to browse · Up to 15 MB
Select fileAccepted: PDF
Your files are processed temporarily and deleted automatically — there is no general cloud storage. File deletion.
How to compress pdf
Simple steps — no software to install.
- 1
Open Compress PDF and upload
Works in any browser, phone included.
- 2
Set a KB target if required
Otherwise just compress at high quality.
- 3
Download the smaller file
True final size displayed.
Why use our Compress PDF
Secure & private
Files are encrypted in transit and deleted automatically after processing.
Fast results
Optimized processing returns your file in seconds.
Free to start
Core tools are free with daily limits — no install required.
Works anywhere
Runs in your browser on any device, anywhere in the world.
The basic method
Open the Compress PDF tool, upload your file, compress, download. The engine removes redundant data and resamples oversized images while text stays sharp — typical files shrink several-fold with no visible change.
Hitting an exact size requirement
When a portal says "maximum 100KB", enter 100 as the KB target before compressing. We compress toward your target at the best quality that fits, never make the file larger than the original, and always show the real final size — very image-heavy files may land slightly above tight targets.
If the result is still too big
Three escalations: convert to grayscale (color scans shed weight fast), split to only the required pages, or rescan the original at sensible resolution. Content has a physical floor — the shown size tells you when you have reached it.
- 30-second walkthrough
- Exact-size method included
- Escalation tips for stubborn files
- No install, no signup to start
- Free with fair daily limits