labs.

my solutions to daily css-battle prompts. pure css + divs, no assets.

text effect that scrubs through the ascii set until each letter lands. staggered by index.

pan + zoom canvas with spatial-hash culling and offscreen caching. 400 synthetic nodes.

post a pdf to your bluesky pds as a com.imlunahey.pdf record with a 16:9 preview.

browse any atproto repo — resolves handle → did → pds, downloads the car, groups by collection.

read any bluesky actor feed via public.api. pins, reposts, images, infinite scroll.

wrap an image in a background, shadow, frame, patterns, and text. pure canvas2d.

find and delete bluesky list subscriptions where the list or its author no longer exists.

live atproto firehose — every commit, identity, and account event streamed with sub-second latency.

every did:plc operation — handle changes, pds migrations, key rotations — as an audited timeline with diffs.

paste any at:// uri — profile, post, list, or custom record — and see it resolved, typed, and cross-linked.

resolve any atproto nsid and render its schema — defs, properties, params, refs — with cross-lexicon jumps.

live-generate atproto timestamp ids, or paste one to decode its timestamp + clock id.

drop an image, extract its dominant colors via k-means. hex + oklch, copyable, css export.

decode any json web token in-browser — header, payload, signature, and a live countdown on the expiry.

translate any cron expression to english and preview the next 10 fire times in your local timezone.

paste any url, see how its og/twitter meta would render in bluesky, x, discord, and slack unfurls.

draft a bluesky post with a live link-card preview. grapheme-accurate char count, facet highlights, previewable as any handle.

everything your browser silently tells every site. ua, canvas + webgl + audio hashes, fonts, ip/geo from cloudflare headers, entropy meter.

rdap-based domain lookup — registrar, registration & expiry dates, nameservers, status flags, dnssec. cached server-side.

generate uuid v4/v7, ulid, nanoid, tid, snowflake, cuid2. paste any id to decode its embedded timestamp and structure.

grapheme segmentation, per-codepoint labels, utf-8 byte counts, and every nfc/nfd/nfkc/nfkd normalization form side by side.

check bluesky handle availability — checks your input plus common suffix variants. 404 from resolveHandle means nobody has it yet.

full history of an atproto identity — handle changes, pds migrations, key rotations, all from plc.directory. rendered as a vertical timeline.

paste any bsky.app post url — renders the full conversation (ancestors + all replies, up to 10 levels) as an indented tree with likes, reposts, and reply counts.

probe any atproto pds — describe/health/listrepos endpoints, response times, and operator metadata. ok/degraded/down verdict at a glance.

live regex tester with highlight. presets for email/url/ipv4/uuid/date/hex color/at-uri. capture groups with ranges; all js regex flags.

base64 / base64url / url / html / hex / binary / rot13 / json-escape. bidirectional. utf-8 throughout. bottom panel compares every codec at once.

line-level diff between two blobs. lcs-based. split + unified views, whitespace toggle, +/− stats. colored exactly like github.

paste any atproto record json, point at a lexicon nsid — get pass/fail with per-field violations. resolves schemas live via dns-over-https + plc.

live aggregate of the bluesky jetstream. events/sec, top collections, create/update/delete tallies — the whole network's writes summarized.

live dns lookup via mozilla dns-over-https. a, aaaa, txt, mx, cname, ns, soa, caa. includes the _atproto.handle.domain pattern bluesky uses.

paste any json blob — collapsible tree with search, jsonpath copier, compact preview of closed branches. eats deeply nested records for breakfast.

type a colour in any format — hex, rgb, hsl, oklch, or a css name. see every other format, accessibility contrast, and live rgb/hsl sliders.

paste any date — unix s/ms, iso 8601, rfc 2822, whatever. get every format, day of week, iso week, relative time, and 8 timezones at once.

the canonical terminal effect. falling kana in phosphor green, amber, cyan, or magenta. choose charset: matrix, binary, hex, pokemon, atproto.

a fake shell for the site. cd /labs, ls, cat readme.txt, open /games. arrow-key history, neofetch, the whole thing.

md5, sha-1, sha-256, sha-384, sha-512 of any input, all at once. sha via subtlecrypto, md5 via js (subtlecrypto refuses). all client-side.

every case style at once — camel, pascal, snake, screaming, kebab, train, dot, path, sentence, title (with stopwords), spongecase, swap, inverse.

generate strong passwords in-browser via crypto.getRandomValues. length + charset toggles, live entropy meter with weak / ok / strong / insane grades.

xxd-style hex + ascii dump of any bytes. input as plain text (utf-8), hex, or base64. choose 8/16/24/32 columns, control chars highlighted.

parse any user-agent string — browser, engine, os, device. pre-filled with your own ua. bot detection, presets for mainstream browsers.

every http status code with a plain-english description and common causes. search + filter by category. tooltip link to http.cat.

paste a curl command, get fetch() + axios code. parses -X, -H, -d, -u, -L, --json, --form and more.

csv ↔ json. quoted fields, escaped quotes, alternate delimiters (, \t ; |), type coercion, live table preview.

cidr → network, broadcast, first/last host, netmask, wildcard, class. bitwise breakdown showing network vs host portions.

fetch any url server-side — see the redirect chain, every response header grouped by security / cors / cache / server, and a body preview.

every tls certificate ever issued for a domain, pulled from crt.sh ct logs. issuer, subject names, wildcard detection, expiry.

paste json — infer a json schema. detects date-time / email / uuid / uri / ipv4. merges heterogeneous arrays, marks required vs optional.

paste numbers, get a full statistics panel — histogram + kde, q-q plot, box plot, outliers (iqr + z-score), normality verdict via k² test.

drop a jpeg or png — see every metadata tag the file is leaking. camera, lens, timestamps, gps. download a stripped copy. all client-side.

drop audio, see frequency over time. webaudio decodes it, hand-rolled cooley-tukey fft runs in-browser, inferno colormap. log-frequency axis.

drop a png — see every chunk it's built from. ihdr decoded, idat totals, text chunks surfaced, crc validated per-chunk against zlib's polynomial.

photo → ascii art. per-cell rec.709 luma averaged, mapped through any of six character ramps (standard, dense, unicode bars / blocks, braille, binary). contrast + invert controls.

dimensional-analysis calculator. parses compound expressions — "5 mph × 2 hours" returns a length, "80 kg × 9.81 m/s²" returns a force. 70+ registered units across 10 dimensions.

every web api this exact tab supports, live-detected. 100+ features across js / networking / storage / graphics / media / crypto / sensors / ui / workers, grouped and searchable.

live position of the international space station. tle-derived lat/lon/alt/velocity from wheretheiss.at, refreshed every five seconds, plotted on an equirectangular world.

global thunderstorm risk. cape + lightning potential index pulled from open-meteo for ~140 cities, color-mapped onto a world canvas. refreshes every five minutes.

118 elements, the classic layout. click any cell for full properties — mass, period, group, phase, electron configuration, year discovered. filter by category or search.

live service status for every tube, dlr, elizabeth line, overground, tram, and cable-car line. disruption reasons shown, refreshed every minute.

all ~800 santander cycles docking stations plotted on a live london map. colour by bikes or free spaces, hover for capacity + e-bike counts.

live next-train board for any london station — tube, dlr, elizabeth, overground, tram, bus. platform-grouped, countdown by minute, 30s refresh.

london air quality band for today + tomorrow, broken out by pollutant (no₂, o₃, pm₁₀, pm₂.₅, so₂). tfl's daily forecast.

every live road disruption on tfl's network — closures, roadworks, events, floods. pins on a london map, filterable by severity.

every tube / dlr / elizabeth line, all stations in sequence, with service status overlay. disrupted lines pulse red; click any station for its arrivals.

every recorded street crime within one mile of a uk postcode, from the home office's police.uk feed. radar plot by category, refreshed monthly (2-month lag).

postcode → constituency → your mp. name, party, portrait, 25 most recent house of commons divisions with their aye/no on each. via members-api.parliament.uk.

food standards agency rating for any uk restaurant, café, takeaway, or shop. 0–5 stars in england / wales / northern ireland, pass-or-fail in scotland.

top 50 cryptocurrencies by market cap — live price, 1h/24h/7d change, 7-day sparkline. usd/gbp/eur/jpy toggle. 60s refresh from coingecko's free tier.

spotify-wrapped for bluesky. enter a handle, pick a year — fetches the full atproto repo car, parses it, surfaces posts / likes / follows / top hashtags / longest post.

any bluesky account as a holographic trading card. rarity tiers by follower bracket, archetype from post cadence, mouse-tilt shine. collections: moots (mutuals).

write, edit, and publish blog posts to your own atproto pds. oauth sign-in with a per-action scope, markdown content, visibility + theme, list + edit + delete your own records — no whitewind account needed, the record is yours.

paste any atproto at-uri, did, or url — see every record across the network that references it. likes, reposts, quotes, replies, follows, mentions, link-backs. queries constellation.microcosm.blue, hydrates post previews via the public appview.

an account's greatest hits — last 100 posts ranked by weighted engagement (likes + reposts×2 + quotes×3 + replies×0.5). four constellation count queries per post, runs in seconds.

paste a handle — see every public moderation or curation list that includes you. bluesky has no built-in way to see this. uses app.bsky.graph.listitem:subject backlinks.

paste a post — histogram of when its likes, reposts, quotes, and replies landed. buckets derived from rkey tid timestamps so we never fetch the interaction records themselves.

every moderation label applied to an account or post, with the labeler that emitted it. surfaces the labels field the bluesky app hides behind warning chrome.

paste a bluesky post — render the tree of quote-posts of quote-posts, recursively. social-drama topology viewer, capped at reasonable depth.

paste a handle — % of their last 100 posts that were replies vs originals, who they reply to most, and whether replies or originals get more likes.

paste a handle — what websites do they link to most? scans the last 100 posts for external link embeds + inline urls, groups by host.

470,000 objects from the metropolitan museum of art — search by artist, medium, culture, or period. public-domain images + full metadata.

~3000 public-domain english-language poems, searchable by author / title / line. rendered in phosphor mono — the way nature intended.

every magic: the gathering card ever printed. scryfall's full query dsl works verbatim — type, colour, cmc, set, artist, rarity, legalities.

randall munroe's webcomic — every strip since 2005, with transcript and mouseover alt-text. arrow keys navigate, r picks random.

art institute of chicago — 120k works with iiif-backed images, cleaner provenance metadata than the met. complementary art lab.

internet archive's open book catalog — search by title, author, or isbn. covers + editions + subjects. ~30m works indexed.

what's airing tonight in any country, plus show search with full metadata — genres, networks, ratings, summaries.

every formula 1 race from 1950 to the current season — driver + constructor standings, race schedule, per-race results tables.

live public firehose of any mastodon instance via sse. activitypub sibling to the jetstream lab, with per-instance stats + top tags.

drop any video / audio — see every track, codec, resolution, bitrate, sample rate, metadata tag and cover art. in-browser via mediabunny.

scrub any video to any timestamp, pull the exact decoded frame as a png. or build a contact-sheet strip. in-browser via mediabunny + webcodecs.

pull the audio track out of any video and save as mp3 or wav. re-encodes in-browser via mediabunny — no upload.

trim any video to a range and save the clip as mp4. re-muxes (and re-encodes only when needed) in-browser via mediabunny + webcodecs.

format converter — mp4 ↔ webm ↔ mkv ↔ mov, plus audio-only to mp3 / wav / ogg / flac. re-muxes when codecs are compatible, re-encodes when not.

top live streams on twitch right now — thumbnails, viewer counts, uptime. filter by game or language. polls every minute.

arrow keys (or wasd), a green dot on a 24×16 grid, one life. paused by default.

conway's game of life on a 60×40 torus. click to paint, space to play, pre-seeded with glider/pulsar/gosper.

five-letter word, six guesses, one puzzle a day — seeded from the date so everyone gets the same word.

short timed run — 15 / 30 / 60 second. wpm + live accuracy, best scores kept locally.

classic 9×9, four difficulties, generated client-side with a unique-solution check. notes, hints, autosaves locally.

mahjong solitaire — 144 hand-drawn svg tiles, three custom shapes. layouts are baked into the seed so a single number conveys the exact deal.

classic solitaire — 52 hand-drawn svg cards with traditional pip arrangements, 4 foundations + 7 tableau + draw-1 stock. seed-shareable.