Social Media Downloader is a free, open-source web app for saving media from public social posts. Paste a URL and it detects the platform, resolves what the page itself publishes, verifies the stream actually plays before offering it, and hands you the file — an HD MP4, an MP3 extracted from it, individual images from a carousel, or the whole carousel as a ZIP.
It covers TikTok, X (Twitter), Instagram, Facebook, YouTube, Pinterest, Reddit, Threads, Snapchat, Twitch and Vimeo, and falls back to a generic extractor for any other site that publishes its media openly.
It reaches only what a logged-out visitor can already see: no private accounts, no subscriber-only posts, no DRM. It runs entirely in the browser with no sign-up, shows no ads, sets no tracking cookies, and installs as a PWA, so on Android you can share a link straight from the TikTok, Instagram or YouTube app instead of copying and pasting.
Built with Next.js and React, deployed as a static export plus a small Cloudflare Worker. The source is MIT-licensed, and the extraction chain falls back across several providers so a download keeps working when any one of them goes down.