Articles on: Inbox

File extensions and sizes supported with Crisp

File uploads in Crisp are limited by both file size and allowed extension type.

Crisp supports uploads across the Inbox, Campaigns, and other products, but not every file type is accepted. The restrictions exist for both security and infrastructure reasons, so it is useful to check them before assuming an upload issue is a bug.

Maximum file sizes

Current upload limits are:

Default limit → 10MB
CSV files → 10MB
GIF files → 3MB (images may be downsized)
JPG files → 12MB (images may be downsized)
WEBP files → 12MB (images may be downsized)
PNG files → 12MB (images may be downsized)

Allowed file extensions

Crisp uses a whitelist for file extensions. If an extension is not on the list below, it cannot be uploaded.

Crisp Inbox

Your plan is Crisp Mini, Essentials, or Plus:

3g2
3gp
aac
ai
asp
aspx
avi
bmp
c
cfg
cnf
conf
cpp
crt
cs
css
csv
doc
docx
.easc
eml
eps
epub
estl
flv
gif
go
gp3
gp4
gp5
gp6
gpg
gpx
h
har
heic
h264
ico
ics
jade
java
jpeg
jpg
js
jsx
json
log
lua
m4a
m4v
md
mid
mkv
mobileconfig
mov
mp3
mp4
mpeg
mpg
musicxml
mxl
nfo
oga
ogg
ogv
ovpn
p12
pcap
pdf
pem
pfx
pgp
php
plist
png
pps
ppsx
ppt
pptx
psd
pub
pug
pxm
py
r
rb
rm
rtf
sass
sh
sketch
sql
srt
stl
svg
swf
swift
tif
tiff
toml
ttf
txt
vb
vue
wav
weba
webm
webp
wma
wmv
xls
xlsx
xml
yaml
yml

If you need an extension that is not supported in the Inbox, contact Crisp support and describe your use case.

Knowledge Base

Allowed formats in the Knowledge Base:

jpeg
jpg
webp
png
gif
svg

Campaigns

Allowed formats in Campaigns:

jpeg
jpg
webp
png
gif
svg

Marketplace

Allowed formats in the Marketplace:

jpeg
jpg
webp
png
svg
pdf

If a file type is not supported, you can still share it through an external file-hosting link such as Dropbox or Google Drive.

Frequently Asked Questions

Still have questions which were not covered in this article? Here is a collection of the most frequently asked questions on this topic.

How can I check my file upload limit inside the app?

Open Settings → Workspace Settings → Data, Limits & Legal to review your current workspace limits.

If you reached a daily upload limit, either wait for the reset or increase the limit from there if your plan allows it.

Why can I not upload archives such as zip or rar files?

Compressed archives can hide malware or phishing content, which is why they are blocked by many platforms.

Crisp expects files to be shared directly rather than hidden inside an archive.

Why did my uploaded file disappear?

Certain extensions are virus-scanned after upload. If a file is detected as unsafe, it is removed automatically.

Some uploaded files also expire after a retention period. Images and lightweight assets may be compressed instead of deleted.

What should I do if a supported file still fails to upload?

First, confirm that the extension is allowed and the file is under the relevant size limit.

If it is, try uploading the same file from the Crisp web app in your browser. If that works, update your desktop app and test again.

Updated on: 19/04/2026

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