Why Notion Import Cannot Process ZIP Files Above Specific Size Limit

You are trying to import a ZIP file into Notion and the process fails without a clear error message. Notion places a strict file size limit on ZIP imports to protect server performance and prevent abuse. This article explains the exact size limits, why they exist, and how to work around them when you need to bring large archives into your workspace.

Why Notion Limits ZIP Import File Size

Notion processes ZIP imports entirely on its servers. When you upload a ZIP file, the server decompresses it, scans each file inside, and converts supported formats into Notion pages or database items. This operation consumes CPU time and memory on Notion’s backend infrastructure.

The 50 MB limit on the compressed ZIP file protects against extremely large uploads that would tie up server resources for minutes. The 500 MB limit on uncompressed content prevents a small ZIP from exploding into a massive dataset that could crash the processing pipeline. These limits apply to all Notion plans, including Free, Plus, Business, and Enterprise.

Supported File Types Inside a ZIP

Notion only imports specific file types from a ZIP archive. Supported formats include Markdown (.md), HTML (.html), CSV (.csv), plain text (.txt), and JSON (.json). Images, PDFs, or other binary files inside the ZIP are ignored during the import process. If your ZIP contains mostly unsupported files, the import may appear to succeed but will produce few or no pages.

How Notion Processes Large ZIP Files

When you upload a ZIP file, Notion first stores it temporarily in cloud storage. The server then decompresses the archive and inspects each file. If the total size of the decompressed content exceeds 500 MB, the server stops processing and returns a generic import failure message. If the ZIP file itself is over 50 MB, the server rejects it before any decompression begins.

Steps to Import a ZIP File That Meets the Size Limit

1. Check the ZIP file size in Windows File Explorer
   Right-click the ZIP file and select Properties. The Size field shows the compressed file size. If it is 50 MB or less, proceed. If larger, you must split the archive before importing.
2. Verify the uncompressed content size
   Right-click the ZIP file and select Extract All. Extract the contents to a temporary folder. Select all extracted files, right-click, and select Properties. The Size field shows the total uncompressed size. If it exceeds 500 MB, remove files or split the archive.
3. Open Notion and navigate to the target workspace
   In the left sidebar, click the workspace name at the top. Select Settings & Members from the dropdown. Click Import in the left panel.
4. Upload the ZIP file
   Click the Choose File button and select your ZIP file. Notion will display a progress bar. If the file is within limits, the import proceeds automatically. If not, an error message appears after a few seconds.
5. Wait for import completion
   After the upload finishes, Notion processes the files and creates new pages. The time depends on the number of files and their complexity. A 50 MB ZIP with 200 Markdown files typically finishes in under two minutes.

How to Import a ZIP File Larger Than 50 MB

If your ZIP file exceeds the 50 MB limit, you must split it into smaller archives. Use a ZIP splitting tool such as 7-Zip, WinRAR, or the built-in Windows compression tool. Each split part must be under 50 MB.

1. Install 7-Zip
   Download and install 7-Zip from the official website. This free tool supports splitting ZIP files into custom-size volumes.
2. Split the original ZIP into 49 MB parts
   Right-click the original ZIP file and select 7-Zip > Add to Archive. In the Split to volumes, bytes field, type 49m. Click OK. 7-Zip creates multiple files named archive.7z.001, archive.7z.002, and so on.
3. Extract each split part individually
   Right-click the first split file and select 7-Zip > Extract Here. Repeat for each part. This produces separate folders of content.
4. Re-ZIP each folder into a separate ZIP file
   Right-click each folder and select Send to > Compressed (zipped) folder. Ensure each resulting ZIP file is under 50 MB.
5. Import each ZIP file into Notion separately
   Follow the import steps in the previous section for each ZIP file. Notion creates separate pages for each import. You can later move or merge them manually.

If Notion Still Cannot Process Your ZIP Import

ZIP File Contains Unsupported Formats

Notion ignores binary files such as images, PDFs, Word documents, or Excel spreadsheets inside a ZIP. If your archive contains mostly these file types, the import will finish successfully but produce very few pages. Check the file types before importing. Convert documents to Markdown or plain text before zipping them.

Corrupted ZIP File

A partially downloaded or improperly created ZIP file may fail to decompress on Notion’s servers. Test the ZIP file on your local machine by extracting it with File Explorer or 7-Zip. If extraction fails, re-create the ZIP using a reliable tool. Avoid using macOS Archive Utility for creating ZIP files intended for Notion, as it sometimes produces incompatible archives.

Network Timeout During Upload

Large ZIP files near the 50 MB limit can time out on slow internet connections. Use a wired Ethernet connection or upload during off-peak hours. If the upload consistently fails, try using the Notion desktop app instead of the web browser. The desktop app handles large uploads more reliably.

Notion Import Limits: ZIP vs Other File Types

File Type	Maximum File Size	Notes
ZIP (compressed)	50 MB	Uncompressed content must stay under 500 MB
Markdown (.md)	5 MB	Single file import, no ZIP wrapper
CSV (.csv)	5 MB	Imports as a database table
HTML (.html)	5 MB	Creates a single page with formatting
Plain text (.txt)	5 MB	Creates a single page with raw text
JSON (.json)	5 MB	Imports structured data as database items

Notion enforces a 5 MB limit on individual file imports. Using a ZIP archive raises the effective limit to 50 MB, but only for supported text-based formats. Binary files inside the ZIP still count toward the 500 MB uncompressed limit but are discarded during import.

Conclusion

You now know that Notion rejects ZIP files over 50 MB and that the uncompressed content inside must stay under 500 MB. To import a large archive, split it into 49 MB parts using 7-Zip and import each part separately. Before zipping, convert any unsupported file types like Word documents or PDFs into Markdown or plain text. For ongoing imports, consider storing large files in cloud storage and linking them from Notion instead of importing them directly.