1
Add your PDF files
Choose one or more supported PDFs that you want to make easier to store, share or upload.
Local PDF size reducer
How to compress PDF files while balancing size and quality
Reduce supported PDF file sizes with selectable compression levels, compare the original and resulting sizes and keep the smaller usable output.
2
Choose a compression level
Select a lighter setting when quality matters most or a stronger setting when file-size reduction is the priority.
3
Run browser-side compression
Allow the tool to optimize supported document content using your device memory and processor.
4
Compare and download
Review the available before-and-after sizes and save the output that meets your quality and size requirements.
Key features
What you can do with Compress PDF
Practical capabilities for this document workflow.
Adjustable compression
Choose from the available quality targets instead of applying one fixed setting to every PDF.
Multiple-file workflow
Process one or more supported PDFs without repeatedly reopening the tool.
Before-and-after sizes
Compare the source and output sizes where the tool reports both values.
Safe smaller-output check
Avoid replacing useful source data with a larger result when safe optimization cannot reduce the file.
Originals remain separate
Downloaded results do not overwrite the selected source PDFs.
No compression queue
The current workflow does not require sending PDFs to a remote Fylvexa conversion queue.
Privacy
Local PDF compression
The current Compress PDF workflow is designed to perform supported optimization in your browser without uploading document contents to a Fylvexa compression server.
Browser-first
Fast workflow
No desktop app
Frequently asked questions
Compress PDF FAQ
Select a question to view the answer.
Choose a lighter level for documents where visual quality is most important. Use a stronger level when the smallest practical file is more important, then inspect the result before keeping it.
No. A PDF that already uses efficient images and compressed objects may not shrink significantly. The tool should not force an inferior result merely to report a reduction.
The current workflow supports one or more files where indicated in the upload area, with a separate result for each processed PDF.
Stronger compression can reduce image resolution or encoding quality. Text and vector content may respond differently, so review the complete output at normal and enlarged zoom.
Available browser memory, document complexity and the number and resolution of embedded images determine how much work the device can complete reliably.
The current Fylvexa PDF compression implementation is designed to run on your device without a Fylvexa document-processing backend.
Related tools
Continue your document workflow
Open another Fylvexa tool that works well with this task.