Reduce PDF Image Size - Free Online Tool

Upload a PDF created from images or scans and rebuild it in the browser. This can reduce file weight for some PDFs and keeps your document on your device.

Scanned documents are often large because every page is stored as an image. When possible, compress the page images before building the PDF for the smallest result.

When you reduce image size online, the best result comes from balancing clarity and file size for the exact upload rule you are targeting. If a form asks for 100KB, 50KB, or 20KB, aim directly for that limit instead of repeatedly guessing quality levels. A predictable KB workflow saves time, avoids upload errors, and helps you finish applications quickly.

Image compression is especially important for Indian recruitment forms, college admissions, scholarship portals, exam registrations, and KYC flows where file constraints are strict. A compressed file also uploads faster on slower connections and is easier to attach to email or send through messaging apps.

For highest success rates, start with a clean source image. Crop unnecessary borders, avoid blurry photos, and keep the main subject centered. Then compress to your required KB or MB size and verify the final file before submitting. If the result looks too soft, raise the target size slightly or reduce image dimensions before recompressing.