Compress PDF to a Target Size — 100% In-Browser
Shrink a PDF to a fixed KB size — perfect for email attachments, government portals, and job applications with strict size limits. Choose a preset (100 KB, 250 KB, 500 KB, 1 MB) or type any custom target. The compressor automatically balances clarity against size so you get the best possible quality that still fits.
Frequently Asked Questions About Compressing PDFs
How does Compress PDF reach a fixed KB target?
The tool renders every page in your browser and rebuilds the document from compressed JPEG images. It then adjusts the image quality — and, if needed, the render resolution — until the finished PDF is at or below your target size.
Will my PDF lose quality?
Only as much as is required to hit your target. High targets keep full sharpness; very tight targets (for example 100 KB) force a lower quality so the file fits. A note under the result tells you exactly what quality and resolution were used.
Which files can I compress?
Any standard PDF you can open in a PDF reader. Scanned (image-based) documents compress extremely well because they are mostly photos. Password-protected PDFs need to be unlocked first.
Is there a file size limit?
No hard limit, but very large files are limited by your device memory. For typical documents — resumes, reports, scanned contracts — everything runs smoothly and quickly.