It is the nightmare scenario for every student. You have spent hours studying, filling out the lengthy application form, and selecting your centers. You reach the final step—Document Upload—and suddenly, you hit a wall.
Most scanning apps like CamScanner or Adobe Scan create high-definition PDF files that are usually 2MB to 5MB in size. While these look great, government servers (NIC portals) simply cannot handle them. They require strict file sizes, often between 20KB and 200KB.
In this guide, I will show you how to compress your documents securely without losing quality, so you never miss a deadline.
📖 What You Will Learn
Why Do Government Portals Reject Large PDFs?
You might wonder, "It's 2025, why can't they accept a 2MB file?"
The answer is scale. When 25 Lakh candidates apply for an RRB or SSC exam, even a 1MB difference per student adds up to Terabytes of extra data. This crashes the servers.
Agencies enforce strict DPI limits:
- Standard Scan: 300 DPI (approx 2MB) ❌
- Required Scan: 96-100 DPI (approx 150KB) ✅
The Hidden Risk: Stop Uploading Your Aadhar Card!
Most online tools work on a Server-Side Model. This means:
- You upload your 10th Marksheet or Pan Card.
- It travels to a server in a foreign country.
- The server processes it and sends it back.
The Solution: Client-Side Compression (Xizoa)
We built the Xizoa PDF Compressor to solve this. It uses Client-Side Technology. The compression happens inside your browser using your phone's processor. Your file NEVER leaves your device.
| Feature | Generic Tools | Xizoa Tool |
|---|---|---|
| Privacy | ❌ Uploads to Server | ✅ Processed on Device |
| Offline Use | ❌ Requires Internet | ✅ Works Offline |
| Control | ❌ Automatic only | ✅ Manual Slider |
Step-by-Step Guide to Fix the Error
Step 1: Upload Your File
Open the tool and select your document. The tool will show the current file size.
Step 2: Adjust the Compression Level
Use the slider to find the right balance:
- For SSC Photos (20-50KB): Move slider to 0.2.
- For Certificates (100-200KB): Move slider to 0.5.
Step 3: Rename and Download
Rename your file to something clear like "Rohan_Caste_Certificate.pdf" directly in the tool.
Cheat Sheet: Size Limits for 2025 Exams
Save this table for future reference:
| Exam Name | Doc Type | Size Limit |
|---|---|---|
| SSC CGL / CHSL | Photo & Sign | 20KB - 50KB |
| UPSC | Scanned DAF | Under 200KB |
| IBPS / SBI PO | Declaration | 50KB - 100KB |
| NEET (NTA) | Category Cert. | 50KB - 300KB |
Troubleshooting: "My Text is Blurry!"
If the text becomes unreadable at 50KB:
- Don't use the lowest setting: Try 0.3 instead of 0.1.
- Check Zoom: Always open the compressed PDF and zoom in to 100%. If you can read the stamp/seal, it will be accepted.
Quick Summary: Tool vs Others
| Criteria | Details |
|---|---|
| Tool Name | Xizoa PDF Compressor |
| Technology | Client-Side (Runs in Browser) |
| Privacy Status | 100% Safe (Files never upload) |
| Best For | Aadhar, Pan Card, Marksheets |
| Supported Exams | SSC, UPSC, IBPS, NEET, RRB |