Casper's Sidekick

Small, free tools made by Casper, a front-end developer in Taiwan.

See the tools

Tools

Every tool on this site is listed here. Tools without an English version are marked with the language they open in.

Sound EffectsFree Sound Effects

Play and download sound effects in MP3 with no sign-up: animals, alarms, nature, game sounds and more, all free to use.

  • Play any sound right in your browser
  • Download MP3 files with no sign-up
  • Animals, alarms, nature, games and more
  • Search by name or browse by category
Browse sound effects

Front-end notes

Since 2013, Casper has written front-end notes in Traditional Chinese, covering HTML, CSS, JavaScript and Vue.

About Casper

A front-end developer and teacher in Taiwan who builds the tools on this site and keeps them up to date.

More about Casper (in Traditional Chinese)