How to Reduce Image and PDF File Size for Online Forms

Government portals, job sites and exam forms in India often limit uploads to 20 KB, 50 KB or 200 KB. Here is how to get under those limits without making documents unreadable.

Photos and signatures

1. Resize first: a passport photo rarely needs more than 300 × 400 pixels.
2. Save as JPG, not PNG, for photographs.
3. Lower quality to 60–80%; text stays readable but size drops sharply.

Scanned documents

• Scan at 150 DPI instead of 300 DPI for on-screen forms.
• Use greyscale when colour is not required.
• Convert images to a single PDF with JPG to PDF, then merge pages if needed.

Why browser tools are safer

Aadhaar, PAN and marksheets are sensitive. KingTools compresses files on your own device, so they are never uploaded to a server.

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Last updated: 2026-11-07