Spark Tray — a Windows utility belt

Spark Tray is a local-first Windows utility belt that consolidates five focused tools into a single system tray icon: video downloading, audio extraction, bulk downloading, background removal, and media transcription. All processing happens entirely on the user's machine, with no cloud uploads, no account required, and no subscription fees.

What is Spark Tray?

Spark Tray is a Windows 10/11 application that provides five utilities through a system tray interface: Video Downloader, Audio Extractor, Bulk Downloader, Background Remover, and Transcriber. It accepts URLs, files, or CSV lists as input and produces downloaded media, extracted audio, transparent PNGs, or timestamped transcripts as output. The app is free and funded through optional idle bandwidth sharing with a vetted partner.

Key Features

• Video Downloader — Paste a link to pull video or extract audio as MP3, with quality selection, subtitle grabbing, and playlist expansion; supports YouTube, Vimeo, and thousands of other sites.
• Audio Extractor — Drop in a video or paste a link to extract sound losslessly or convert to MP3, M4A, WAV, FLAC, or Opus at a chosen bitrate.
• Bulk Downloader — Drop in a CSV or paste one link per line to queue downloads in the background, with configurable limits and automatic retries for failures.
• Background Remover — Cut subjects out of photos to get transparent PNGs in seconds, for single images or whole batches, with optional solid color or new backdrop.
• Transcriber — Turn audio or video into timestamped transcripts with export to SRT, VTT, TXT, or JSON; choose model for speed vs. accuracy and translate to English.
• Local by design — Files and URLs never leave the PC; no uploads, no queue, no server round-trips.
• Transparent funding — Free because users share idle bandwidth through a vetted partner; pauses on metered connections and backs off when active.

Who is it for?

• Students — Download lecture recordings as MP3s for offline listening on commutes.
• Content creators — Remove image backgrounds for product shots or extract audio tracks from video files.
• Podcasters and researchers — Transcribe interviews or long-form audio into timestamped SRT files for editing or reference.
• Media archivists — Bulk-download large link lists from CSV files with automatic retry for failed items.

What can you do with Spark Tray?

• Batch media collection: Drop a CSV of 200 links into the Bulk Downloader and let it queue and process everything in the background while you work.
• Podcast transcription: Turn a two-hour podcast into a clean SRT file with timestamps in minutes, entirely on your laptop.
• Product photography: Remove backgrounds from product shots in batch mode to get transparent PNGs ready for e-commerce listings.

How does Spark Tray work?

Download and install the app — it installs just for the user with no admin prompt or reboot. Spark Tray then lives in the system tray, waiting quietly until needed. Open any utility, paste or drop input, and get results without anything leaving the machine.

Pricing

Free. The app is funded through optional idle bandwidth sharing with a vetted partner; users can opt out by uninstalling.

FAQ

Is Spark Tray free?

Yes, Spark Tray is completely free with no account and no subscription. It's funded by sharing a small fraction of idle network bandwidth through a vetted partner, which users opt into at install.

Does Spark Tray upload my files to the cloud?

No. Spark Tray runs entirely on your machine — files and URLs never leave your PC. There are no uploads, no server round-trips, and no cloud processing.

What happens if I don't want to share bandwidth?

Using Spark Tray means opting into bandwidth sharing. If you don't want to share, uninstalling the app is the opt-out. The app pauses on metered connections and backs off when you're actively using the network.

What formats does the transcriber support?

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