Choose your input
Choose the PDF and note its original size.
All toolsPDF tools
Compress PDF
Reduce PDF size with adjustable browser-based compression.
Runs locally in your browser. Your files are never uploaded.
Preparing private workspace…
Process locally
Select Strong, Balanced, or Best quality.
Review the result
Choose Compress PDF and allow each page to render.
Use the output
Compare the downloaded size and visual quality before using it.
About this tool
What Compress PDF does
Compress PDF reduces file size by rendering each page as a JPEG image and rebuilding the document. Strong, balanced, and best-quality modes adjust resolution and image quality. This predictable approach works well for scanned or image-heavy PDFs but intentionally flattens searchable and interactive content.
Practical example
A realistic way to use it
A scanned handout with full-page photos may shrink substantially in Balanced mode, while a small text-only PDF may see little benefit or even grow.
Know before you use it
Supported workflow and limitations
- Searchable text, selectable text, links, forms, and layers become flattened images.
- The tool does not promise an exact target such as 100 KB.
Common questions
Compress PDF FAQ
Why does compression flatten text?+
Pages are rendered to images to produce consistent cross-browser compression, then placed into a new PDF.
Which mode should I choose?+
Balanced is a useful starting point; choose Strong for smaller files or Best quality when readability matters most.
Are my PDF uploaded to Talzo?+
No. Talzo processes your PDF inside your browser. The private input is not sent to our server.
Will every PDF become smaller?+
No. Already optimized or mostly text-based PDFs may not shrink significantly.
Is there a file-size or usage limit?+
Talzo does not add an artificial usage gate. Practical limits depend on your browser, available memory, file complexity, and device performance.
Tool behavior and guidance last reviewed June 28, 2026.