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Mailchimp maximum image & file sizes

This post is about file-sizes. If you’re looking for guidance on Mailchimp image dimensions, please see the separate post.

The Content Manager in Mailchimp shows the images and files that you’ve uploaded to Mailchimp. Any files, including images, that you’ve uploaded are shown in the Content Manager for simple reuse in future campaigns.

Allowed Mailchimp file-types

There are many file types that may be uploaded and stored in your Content Manager. The file-types allowed to be uploaded to the Mailchimp Content Manager are:

File Type Extensions
Text files .txt, .csv, .log, .css, .ics
Image files .jpg, .jpe, .jpeg, .gif, .png, .bmp, .psd, .tif, .tiff, .svg, .indd, .ai, .eps
Document files .doc, .docx, .rtf, .odt, .ott, .pdf, .pub, .pages, .mobi, .epub
Audio files .mp3, .m4a, .m4v, .wma, .ogg, .flac, .wav, .aif, .aifc, .aiff,
Video files .mp4, .mov, .avi, .mkv, .mpeg, .mpg, .wmv
Spreadsheet files .xls, .xlsx, .ods, .numbers
Presentation files .odp, .ppt, .pptx, .pps, .key
Archive files .zip, .vcf

Tip: A file attachment cannot be sent with an email campaign. A link to a file in the Content Manager may however be sent which acts in a very similar way to sending an attachment. See instructions on how to link to a file (in place of an attachment) in Mailchimp.

Maximum Mailchimp file-sizes

The maximum file-sizes that may be uploaded into the Content Manager are:

  • 1 MB for images (e.g. .jpg)
  • 10MB for other allowed file-types (e.g. .pdf)

Tip: To reduce file sizes (particularly images) without losing quality use a service such as; Compressor.io, Kraken or, if you use windows, FileOptimizer.

Found this useful? Please share:

Related

  • How to send an attachment in Mailchimp
  • How to Auto-Resize an Image in Mailchimp
  • How to add an attachment to a Mailchimp campaign

Filed Under: Marketing

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Reader Interactions

Comments

  1. Dipti Mody says

    February 19, 2020 at 7:03 am

    Gary,
    I am unable to upload .MP3 file in the Content Manager of the Mailchimp. The size of the file is 113,189KB. Can you shed some light? When an attempt to upload mailchimp gives error message “Can’t upload the file type”.

    Reply
    • Gary says

      February 19, 2020 at 7:35 am

      Dipti, the main issues with the file you’re trying to upload to the Mailchimp Content Manager (as far as I can tell) if that Mailchimp allows for a maximum file size of 10 MB (the file you’re trying to upload is about 113MB). There could also be an issue with the file itself (e.g. the header etc.). The best way to send a link to your file is by uploading the file to Dropbox or another shared file service (see https://organicweb.com.au/marketing/better-mailchimp-attachments/).

      Reply
  2. Marie says

    April 21, 2020 at 8:44 pm

    Image dimensions are also restricted. Check pixel dimensions. That might be your problem.

    Reply

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