Prism 1.2.0 — 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 1.2.0

• Convert and make smaller. A new Tools section in the sidebar, Convert to and Make
  smaller in a finished download's menu, and two buttons in the Download complete window.
  • Convert pictures (also iPhone HEIC photos), music and videos: MP3, WAV, FLAC, M4A, JPG,
    PNG, WebP, MP4, WebM, GIF for short clips, or just the sound of a video as MP3. Several files
    at once can also be packed into a ZIP.
  • Make smaller pictures, music and videos to fit Discord (20 MB), e-mail (25 MB), WhatsApp
    (16 MB) or a size you choose. Before it starts, Prism shows the resulting size, resolution and
    quality, and says so when a file is too long to look good at that size. The result is checked
    and made again smaller if it came out too big.
  • The new file is saved next to the original, which stays as it is. Prism uses its own ffmpeg
    (downloaded on first use, like for videos).
• Just a part of a video. In the Download video window, choose Only a part and pick the
  start and end with the two handles or by typing the times, or click a chapter. Prism downloads
  only that part, cut exactly, as a video or as MP3.
• What's inside a ZIP. The Download file window shows the folders and files in a ZIP before
  you download it, reading only a few kilobytes from its end. One file can be downloaded on its
  own, without the rest of the archive.
• Finished downloads show as finished
  (#41): a download that
  finished while the window was open could still look like it was downloading until the window was
  opened again. Thanks to nckrkllkc for the report!
• The sidebar fades out at its bottom edge when there's more below (Grabber, Trash).
• Cancelling a download and deleting its file is quicker: Prism no longer writes the file to disk
  first.
• The Chrome Web Store extension (1.1.0) keeps working as it is; nothing to update there.

Prism 1.1.8

• Lists of links open once (#37),
  Linux: WebKit's previous renderer against empty windows on KDE Plasma and memory given back after
  long downloads (#36,
  #40), and Hide the Dock icon
  on the Mac (#34).

Prism 1.1.7

• AI models from Hugging Face (#29),
  Turkish (#31), Linux windows
  shown on creation (#30), and a
  window background that matches the theme.

Prism 1.1.6

• The light theme is fully light on Windows
  (#21); Brave Origin connects on
  Linux and macOS; VK videos (#25);
  YouTube while signed in (#23); the
  Firefox Add-ons ID.

Prism 1.1.5

• Links to .torrent files open Add torrent instead of failing
  (#20).

Prism 1.1.4

• The window opens again on Linux
  (#18).
• Lighter in the tray (#11):
  after a minute there, Prism closes its window to free the web view's memory.
• Compact view (Settings › Appearance); magnet links and .torrent files open in Prism on Linux;
  with Close button hides to the tray off, the close button quits Prism.

Prism 1.1.3

• Downloads from sites with a robot check (like softpedia.com) are left to the browser
  (#14), and an error page is
  never saved as your file.
• Remove downloads whose files were deleted (Settings › General, off by default).

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.
• AI models from Hugging Face: by name, link or search, the right files picked for you,
  checked by SHA-256.
• 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.