Is there a size limit for attachments in the I-129?

The I-129 is the form used to petition for several work-based visa categories, including the O-1. When it comes to the size or number of attachments, the answer depends mainly on how the petition is submitted.

For electronic filing, there may be technical size limits on uploaded files, set so that the system can process documents efficiently. For paper filing, the main concern is the organization and clarity of the evidence, following the official instructions. In either format, what matters most is that the documentation is complete and well structured.

• Organize attachments clearly and in accordance with the form instructions.
• For online filing, pay attention to any technical file size limits that may apply.
• Always confirm the most current version and guidelines before submitting.

Because technical instructions can be updated, review the current USCIS guidance for the I-129 and, if you have specific questions, seek the support of a trusted immigration professional.

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Victoria Harper

Editor-in-Chief

Meet the author

As a journalist and lead editor at Visto n’ Visa, Victoria helps ensure that immigration topics are covered in a clear, trustworthy, and easy-to-understand way. Her focus is on delivering useful, human, and relevant content for people exploring new paths abroad.