Content type patterns
Some fields - such as Skip inline attachments in the
Strip attachments action - match an
attachment by its Content-Type. This page lists the most common content types you can use.
How matching works
- Provide one or more patterns separated by a semicolon (
;), for exampleimage/*;text/calendar. - The
*character is a wildcard that matches any sequence of characters, soimage/*matchesimage/png,image/jpeg, and every other image type. - Each pattern is compared against the attachment's
Content-Type(for exampleimage/png).
Wildcard patterns
| Content type | Description |
|---|---|
image/* | Any image (JPEG, PNG, GIF, ...) - typically inline logos and signature images |
text/* | Any text-based part (plain text, HTML, calendar, ...) |
application/* | Any application content type (documents, archives, binary data, ...) |
* | Every content type |
Images
| Content type | Description |
|---|---|
image/jpeg | JPEG image (.jpg, .jpeg) |
image/png | PNG image (.png) |
image/gif | GIF image (.gif) |
image/bmp | Bitmap image (.bmp) |
image/tiff | TIFF image (.tif, .tiff) |
image/webp | WebP image (.webp) |
image/svg+xml | SVG vector image (.svg) |
Calendar
| Content type | Description |
|---|---|
text/calendar | iCalendar meeting invitation (.ics) |
application/ics | Alternative iCalendar type used by some clients |
Documents
| Content type | Description |
|---|---|
application/pdf | PDF document (.pdf) |
application/msword | Microsoft Word 97-2003 (.doc) |
application/vnd.openxmlformats-officedocument.wordprocessingml.document | Microsoft Word (.docx) |
application/vnd.ms-excel | Microsoft Excel 97-2003 (.xls) |
application/vnd.openxmlformats-officedocument.spreadsheetml.sheet | Microsoft Excel (.xlsx) |
application/vnd.ms-powerpoint | Microsoft PowerPoint 97-2003 (.ppt) |
application/vnd.openxmlformats-officedocument.presentationml.presentation | Microsoft PowerPoint (.pptx) |
text/plain | Plain text (.txt) |
text/html | HTML content (.html) |
text/csv | Comma-separated values (.csv) |
Archives
| Content type | Description |
|---|---|
application/zip | ZIP archive (.zip) |
application/gzip | gzip archive (.gz) |
application/x-7z-compressed | 7-Zip archive (.7z) |
application/x-rar-compressed | RAR archive (.rar) |
application/x-tar | tar archive (.tar) |
Other
| Content type | Description |
|---|---|
application/octet-stream | Generic binary data, used when the type is unknown |
audio/* | Any audio file |
video/* | Any video file |