Everything in the catalog

Shows live frequency bars from your microphone using the Web Audio API.

Reacts to microphone sound with eight animated modes such as plasma, particles, tunnel and fire.

Decodes a base64 string and decompresses the gzip data inside it.

Shows any text full-screen in large type with font, color and gradient options, and keeps the settings in a shareable URL.

Turns a Bluesky handle into its DID via the AT Protocol API.

Shows the posts a given Bluesky user has liked.

Lists posts that quote a given Bluesky post.

Checks a Bluesky account's recent posts for timing and engagement patterns typical of reply bots.

Set of drag-to-install bookmarklets for web development and everyday browsing.

Draw a box on an image and read the region back as normalized percentage coordinates.

Displays a Bugzilla bug with its comments and history as a clean timeline.

Looks up US places and their American Community Survey statistics via the Census Reporter API.

Renders a pasted Claude API JSON response with its citations displayed alongside the text.

Shows a Claude Code session .jsonl file as a searchable, filterable timeline.

Shows every format present on your clipboard after a paste, including text, HTML and images.

Opens a Codex rollout .jsonl file as a searchable, filterable timeline.

Step-by-step recipe timer that tracks elapsed time and upcoming tasks, with saved recipes.

Builds an HTTP request from the browser and shows which response headers and body the page is actually allowed to read.

Tune offset, blur, spread, color and opacity with sliders and copy the CSS box-shadow.

Plots rows of a CSV with latitude and longitude columns as markers, configured through URL parameters.

Highlights curly quotes, apostrophes, em dashes and non-breaking spaces in pasted text and counts each kind.

Finds the span between two dates in days, weeks, business days and weekend days, with a timeline.

Shows an AI deep-research transcript with reasoning steps, searches and visited pages.

Queries A, AAAA, MX, TXT and other record types through Cloudflare's DNS-over-HTTPS with a choice of resolver.