Crossposter – open-source browser extension for social media posting
Crossposter is a free, open-source browser extension that cross-posts any social media post – text, images and video – from one platform to all the others. Runs locally in Chrome or Firefox: no account connections, no third-party service, works with personal and private accounts.
What it does
Crossposter is a free, open-source browser extension for Chrome and Firefox that shares any social media post – text, images, and even video – from one platform to all the others. Twenty seconds from spotting a post to having it ready to publish on all your favourite social networks – text and media prefilled. Tweak it if you like, then hit Post. Crossposter doesn't just copy text – it copies the media too, straight into the next platform. Grabs the video file – no screen recording or third-party ripper needed. Trim and crop if needed with Crossposter's built-in editor. Photos come along too – no saving and re-attaching by hand. Annotate and crop prior to sharing with Crossposter's built-in…from crossposter.mochi.is
Does a similar job
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CrossposterJun 2026 · crossposter.apoorvdarshan.com · ▲10Free, open-source social publishing from localhost
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