# Processing 3 and 4 Compatibility

**URL:** <https://discourse.processing.org/t/processing-3-and-4-compatibility/32446>\
**Category:** Processing\
**Created:** [September 27, 2021, 4:54pm UTC](https://discourse.processing.org/t/processing-3-and-4-compatibility/32446 "2021-09-27T16:54:21Z")\
**Posts on this page:** 1\
**Showing post:** 2

<div class="post-metadata">

**Author:** ![glv](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.processing.org/glv/32/18785_2.png) [@glv](https://discourse.processing.org/u/glv)\
**Post date:** [September 27, 2021, 6:28pm UTC](https://discourse.processing.org/t/processing-3-and-4-compatibility/32446/2 "2021-09-27T18:28:23Z")

</div>

Hello,

See this topic:

> [@Can I safely install both Processing 4 and Processing 3.5.4?](https://discourse.processing.org/t/can-i-safely-install-both-processing-4-and-processing-3-5-4/31700/2):
>
> Hello, I have both installed. On startup: slight_smile

`:)`

---

_[View the full topic](https://discourse.processing.org/t/processing-3-and-4-compatibility/32446)._