Filling out online application forms for Indian government exams (UPSC, SSC CGL/CHSL, IBPS, State PSCs, or NTA) is notoriously frustrating when it comes to document uploads.
Exam servers enforce strict, non-negotiable file size limits. If your caste certificate is 305 KB instead of under 300 KB, or your marksheet is blurry after compression, the application portal will reject the file instantly.
To avoid last-minute form submission errors, here is the complete reference guide to exam file size specifications and how to compress your PDFs directly on your device.
Official File Size Requirements for Major Indian Exams
Exam portals require documents in specific file sizes and formats:
| Examination Authority | Document Type | Allowed Format | Prescribed Size Limit |
|---|---|---|---|
| UPSC (Civil Services / EPFO) | Photo ID (Aadhaar / Voter ID), Caste, Disability, Degree Certificates | 50 KB – 300 KB | |
| UPSC (Civil Services / EPFO) | Photograph & Signature | JPG / JPEG | Photo: 20–200 KB Signature: 20–100 KB |
| SSC (CGL, CHSL, MTS, GD) | Candidate Scanned Signature | JPG | 10 KB – 20 KB |
| IBPS & SBI (PO / Clerk) | Handwritten Declaration & Marksheets | PDF / JPG | Marksheets: 50–500 KB Signature: 10–20 KB |
| NTA (NEET / JEE / CUET) | Category & PwD Certificates | 50 KB – 300 KB | |
| State PSCs (UPPSC, BPSC, MPSC) | Domicile / Income / Marksheets | 100 KB – 200 KB |
How to Compress PDF Documents to Exact KB Targets (50KB, 100KB, 200KB)
When compressing certificates for government portals, standard compressors often make the text unreadable. Follow these steps to retain crisp text while hitting exact file size requirements:
- Open the Compressor: Go to PDFTools4U Compress PDF.
- Select Your Certificate: Drag and drop your scanned degree, Aadhaar card, or caste certificate PDF.
- Choose Target Size Mode: Select your exact target output (e.g., Under 200KB or Under 100KB) to match the portal requirements.
- Compress Instantly: Click Compress. The WebAssembly engine reduces metadata and compresses images locally inside your browser.
- Download & Check: Download the output PDF. Open it and zoom in to verify that your roll number, stamp, and signature remain sharp and legible before uploading.
Why You Should Never Upload Aadhaar or Marksheets to Cloud Compressors
Exam applications involve your most critical identity documents: Aadhaar number, category certificates, 10th/12th marksheets, and signatures.
Most generic online PDF resizers upload your files to third-party cloud servers where they can remain cached or vulnerable to data leaks.
PDFTools4U runs 100% locally in your browser memory:
- Zero Uploads: Documents are processed via client-side JavaScript and WebAssembly on your own device.
- No Compression Watermarks: Clean, unbranded PDFs accepted by all automated scrutiny portals.
- Completely Free: No daily quotas, account registrations, or paywalls during crunch form-filling hours.
Frequently Asked Questions
Why is my compressed PDF rejected by the portal?
Most rejections happen if the file is below the minimum limit (e.g., smaller than 20 KB) or above the maximum ceiling (e.g., larger than 300 KB). Check both the minimum and maximum KB rules of the notification.Can I combine both sides of my Aadhaar card into a single PDF?
Yes. Use the [Merge PDF](/pdf-merge) tool to combine front and back scans into a single page or multi-page PDF, then compress it under 300 KB.Check the Portal Rules Before Compressing
File-size limits are not universal. The same certificate may have different requirements for UPSC, SSC, IBPS, NTA, or a state portal, and a notification may specify both minimum and maximum sizes. Record the required format and limit before compression, and keep the original scan so you can create another version if the first output is too blurry or too small.
For identity documents, verify that the final PDF still shows the full name, document number, issue details, photograph, and official seal where the form requires them. Do not upload a document just because it meets the KB limit if compression has made those details unreadable.