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

There is no size limit for physical attachments on the I-129, but online submission may have technical restrictions; always follow the official USCIS instructions.

Written by

Victoria Harper

Editor-in-Chief

Updated on October 12, 2025
2 min read
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Let”s start by providing some context on the topic. In the petition process using Form I-129 – which is used, among other categories, for O-type visas – it is essential to pay close attention to every detail of document presentation, ensuring that all evidence is organized and compliant with official guidelines. This care is fundamental for the smooth progress of the process, avoiding delays and unexpected issues.

Regarding the question about whether there is a size limit for attachments on the I-129, it is important to note that traditionally, when petitions are submitted in physical (paper) format, USCIS does not impose a specific restriction concerning the quantity or size of the attached documents. However, if you are submitting your petition online through the electronic system, there may be technical limits related to the size of files that can be uploaded. These limits tend to be set to facilitate electronic processing and ensure systems operate efficiently.

It is recommended to always check the most recent instructions issued by USCIS for Form I-129, as policies and requirements may be updated from time to time. Keeping up with official guidelines is crucial to avoid technical issues impacting the processing of your petition.

Furthermore, it is worth emphasizing the importance of strictly following United States immigration laws and seeking information directly from official sources. If specific doubts arise, consulting specialized professionals and reputable companies – which clearly explain the rules without promising guaranteed results – is a prudent practice to avoid scams and misleading marketing campaigns.

In summary, while there is no strict size limit for attachments when sent physically, the electronic format may be subject to technical restrictions. Therefore, always pay attention to USCIS instructions and follow a well-informed path. This care will help ensure your petition is evaluated properly and without setbacks.

Learn more about O-1 Visa

Requirement
Extraordinary ability
Initial validity
3 years
Extension
1 year at a time (unlimited)
Processing
2-4 months
All about O-1 Visa
Victoria Harper

Editor-in-Chief

Meet the author

Leading journalism and editorial content at Visto n’ Visa, Victoria helps make immigration topics clear, trustworthy, and easy to understand. Her focus is on delivering useful, human, and relevant content for people exploring new paths abroad.

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

There is no size limit for physical attachments on the I-129, but online submission may have technical restrictions; always follow the official USCIS instructions.

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