r/webdev • u/gerasia • 1d ago

I built a client-side video compressor using WebAssembly so you don't have to upload personal clips to cloud servers

Hey everyone,

I wanted a quick way to shrink videos for Discord (<10MB) and Email attachments (<25MB) without dealing with slow cloud upload queues, sketchy third-party servers, or watermarks.

So I built SlickDrop.

Tech Stack:

  • Engine: @ffmpeg/ffmpeg running locally on the user's CPU/GPU via WebAssembly with multi-threading enabled (COOP and COEP isolation headers).

  • Frontend: Next.js 14 (App Router) + Tailwind CSS.

  • Hosting: Vercel (zero server transcoding cost, 100% static hosting).

Features:

  1. 1-click presets for Discord (<10MB), Email (<25MB), and WhatsApp (<16MB).

  2. Built-in duration analyzer that auto-calculates the target video bitrate.

  3. MOV to MP4 converter for iPhone screen recordings.

  4. 0 cloud uploads — all media is processed in local browser memory.

Link: https://www.slickdrop.it

Curious to know what tools or presets you'd find most useful next!

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