JEE Main 2026 Registration: NEW Changes, Important Documents, Image Size and NTA Advisory for Students

The National Testing Agency (NTA) has outlined a precise list of documents necessary for JEE Main 2026 registration, along with strict instructions regarding their size and format. Candidates must adhere to these guidelines when uploading their photograph, signature, and certificates to avoid rejection. Furthermore, the NTA has advised applicants to update their Aadhar, UDID, and category certificates in advance of the JEE Main 2026 registration process. The application form will be accessible on the official website, jeemain.nta.nic.in. The NTA has activated the JEE Main 2026 registration demo link today, October 7, 2025, at demo.nta.nic.in. This demo allows candidates to familiarize themselves with the online registration process before the official application window opens. The official registration is expected to begin soon, and candidates can apply online at jeemain.nta.nic.in.
Applying for the JEE Main exam involves several crucial steps, including registration, form-filling, document uploading, and fee payment. Among these, the document upload process can be particularly complex due to the specific requirements for each document, including varying size limits and formats. This article aims to simplify this process by providing a detailed list of required documents, information on the validating authorities, and comprehensive size guidelines to ensure a smooth application. 

Download: JEE Main 2026 Registration Update Important Documents for Online Application Form Official Notice

Documents Required to Appear for JEE Mains Exam

Candidates must prepare specific documents for the JEE Main application and verification to ensure a smooth process and avoid delays.

Accessing the JEE Main 2026 Demo Registration Link

Candidates can familiarize themselves with the actual application process by trying the demo registration through these steps:

1. Visit the Demo Page: Go to the JEE Main 2026 demo registration link at demo.nta.nic.in.

2. Review Instructions: Carefully read all the instructions provided to fully understand the registration requirements.

3. Simulate Registration: Enter your basic personal and academic details to simulate the actual form-filling process.

4. Verify and Submit: Verify all the entries before final submission to get a clear sense of the official application flow.

Check: JEE Main 2026 Demo Registration Link

When to apply for JEE Main 2026?

The following table outlines the expected important dates for JEE Main 2026 Session 1 and Session 2 registrations:

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Documents Required for JEE Mains Application Form

Applicants can find the list of JEE Main 2026 documents below:

• Aadhar Card

• Class 10th marksheet

• Photograph of the examinee

• Signature of the candidate

• Income certificate (if applicable)

• Caste certificate (if applicable)

• UDID card (for PwD candidates)

It is crucial to accurately fill in details from these documents to prevent application rejection. While not all documents need to be uploaded, general category candidates will skip many of these. Nonetheless, candidates should have these documents readily available to ensure accuracy and avoid last-minute discrepancies.Documents to Upload During JEE Main Registration

Based on previous JEE Main information brochures, the following documents are typically required for upload. Exact guidelines will be provided in the official notification.

• Scanned image of the candidate’s photograph

• Scanned image of the candidate’s signature

• Class X or equivalent certificate/mark sheet

• PwD/PwBD certificate

Important Instructions for Uploading the JEE Mains Registration Documents

• Do not upload blurred or dark images.

• Remember to save the file as 'Photograph' and save it in JPG/JPEG format

• Similarly, the signature file should be named as 'Signature' and be saved in JPG/JPEG format.

• Applicants must save the scanned copy of class X or equivalent certificate/marksheet as ‘Class-X Certificate’ and save it in a PDF file between 10 kb to 300 kb.

• The scanned copy of the PwD/PwBD certificate should be named as 'Disability Certificate' and should be a pdf between 10 kb to 300 kb.

• A correction facility for the required documents may not be available in the future.

• Uploading wrong documents may lead to UFM penalties

• Use an updated browser and a stable internet to avoid upload errors.

Preparing for JEE Main 2026 requires meticulous planning, especially regarding documentation. The application process, starting in November 2025, is strictly online via jeemain.nta.nic.in. Candidates must ensure all documents, including the Aadhaar card and category certificates, are valid and ready in advance. Adhering to the specific size limits for the photograph and signature during the upload process is essential to prevent application rejection. By organizing these documents and following the NTA's guidelines carefully, applicants can ensure a smooth registration and focus completely on their exam preparation.

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