Prism 1.1.3 — One beam. Many rays.

A fast, open-source download manager for Windows, Linux and macOS, with browser integration
and video downloads.

What's new in 1.1.3

• Downloads from sites with a robot check work again
  (#14). Some sites, like
  softpedia.com, sit behind Cloudflare's check (Just a moment…) that only a web browser passes.
  Prism used to fail with HTTP 403 or save the check page as your file (11 KB "completed"
  downloads). Now it tries the link first and leaves such downloads to the browser, with a
  notification saying so.
• Remove downloads whose files were deleted (Settings › General, off by default): finished
  downloads leave the list once their file is gone from the computer, checked when Prism starts
  and whenever its window comes to the front. Downloads on a drive that isn't connected stay.
  Thanks to ReyvID for the idea!
• An error page is never saved as your file: when a server answers a program, archive, disk
  image or media download with a small web page instead, the download fails with a clear message.
• The Chrome Web Store extension (1.1.0) keeps working as it is; nothing to update there.

Prism 1.1.2

• Arabic (the whole window mirrored right to left) and Indonesian: 8 languages now.
• Copied links without popups: turn off Ask before adding copied links in Settings › General.
• A fuller torrent window (category, queue, free space) and Delete with files asking once.

Prism 1.1.1

• Czech, German, Spanish, French and Italian, besides English; Prism follows your system's
  language (Settings › General › Language).
• The portable version finds the browser extension again
  (#12); torrents with several
  files get their own folder; Start minimized and starting with the computer keep Prism in the
  tray; Zen and Firefox with new profiles connect on Linux; the rpm works with RPM Fusion's ffmpeg
  (#10).

Downloads

Step-by-step guides: installing Prism ·
installing the browser extension.
Verify downloads with SHA256SUMS.txt.

What's inside

• Multi-connection engine written in Rust: up to 32 connections per file, dynamic
  segmentation (a freed connection splits the largest remaining range), automatic
  detection of server connection limits, writes straight into the final file.
• Resume that survives crashes: pause, quit, lose power — Prism continues where it
  stopped and validates the file against the server.
• Browser integration: click a download link and Prism takes over. A Download video
  button over video players, a popup listing every stream on the page, right-click menus.
• Video and audio: YouTube and every site yt-dlp supports. Choose MP4 + quality (up
  to 8K/HDR) or MP3 only. Subtitles, chapters, thumbnails, SponsorBlock.
• More protocols: FTP/FTPS, HLS and DASH streams, BitTorrent and magnet links.
• Organisation: categories, queues with schedules and speed limits, actions when a
  queue finishes (sleep, shut down…), site grabber, batch downloads, clipboard monitor.
• Liquid-glass UI with dark and light themes, six accent colours and a mini window.

Known limitations

• The installers are not code-signed (signing certificates are paid):
  • Windows SmartScreen: click More info → Run anyway.
  • macOS: run xattr -dr com.apple.quarantine /Applications/Prism.app once (or System
    Settings → Privacy & Security → Open Anyway). In-app updates don't need this again.
• Firefox: Prism isn't in Firefox Add-ons yet. Its extension is loaded by hand, and Firefox
  keeps unsigned add-ons only until restart, except in Developer Edition / Nightly / ESR.
• macOS builds are produced by CI and tested there; feedback from real Macs is very welcome.
• Flatpak browsers on Linux can't talk to native apps (a browser sandbox limitation) — use
  the deb/rpm version of your browser.

Found a bug? Open an issue.
Like Prism? A ⭐ helps a lot.