pah.moi
Functional clarity. A privacy-first set of tools, learning environments, toys, projects, and some unsolicited commentary.
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random tool: Password Generator · Generate a random password or a word-based passphrase in your browser.Dig over DoH · Client-side DNS-over-HTTPS lookup.Subnet Calculator · Work out a network, broadcast, netmask, host range, and host count from an IPv4 or IPv6 CIDR.X.509 Certificate Analyzer · Decode a PEM/DER certificate: subject, issuer, validity, serial, and SANs.Multi-Encoder · Encode text in fourteen encodings at once, or decode a pasted value back into text.Email Header Analyzer · Trace an email's Received hops with delays, and read its auth (SPF, DKIM and DMARC) results.HTTP Response Header Analyzer · Paste HTTP response headers and grade the recommended security set.CVSS Calculator · Score a CVSS v3.1 or v4.0 vector: the score, its severity band, and the vector string.File Hasher & Checksum Verifier · MD5, SHA-1, SHA-256, SHA-512 and BLAKE3 of text/local files, and a checksum verifier.Hashprint Codec · Draw a SHA-256 or SHA-512 digest as a grid that decodes back to it, and compare two cell by cell.JWT Decoder · Decode a JWT's header and payload locally, and verify the signature when you supply a key.Log Parser · Pretty-print JSON logs and parse Common Log Format access lines into fields.Regex Reference · Look up a ready-made regular expression: 99 patterns with what each one matches.Packet Analyzer · Decode a raw hex packet into an Ethernet / IPv4 / TCP-UDP protocol tree.Local HTTP Request Constructor · Build an HTTP request, classify its headers, and generate curl / fetch / reqwest code.Epoch Converter · Convert a Unix timestamp to a calendar date in UTC or a named timezone (ISO 8601, weekday, hex).chmod Visor · Read and edit a Unix file mode as a grid, octal or symbolic, with alerts on risky modes.nmap Builder · Assemble an nmap scan command from options, with a note on how loud it is.openssl Helper · Build the openssl command for common certificate and key operations.wget Builder · Assemble a wget site-mirror / download command from options.Crontab Builder · Explain a cron expression in plain language, or build one from fields or a phrase.SSH Config Assistant · Build a ~/.ssh/config Host block from a few connection options.File Header Forensics · Identify a file from its bytes, audit its extension against them, and read the header.Base Converter · Convert an integer between binary, octal, decimal, and hex.Unicode Inspector · Break text into per-character codepoint, UTF-8 bytes, and category.Text Width · A string's byte, scalar, grapheme and terminal-width counts, on a column grid.Binary Value & Endianness Inspector · Interpret a byte buffer across endianness.Terminal Theme & ANSI Palette Designer · Import, validate, preview, and convert colour themes between emulator formats.ASCII & Unicode Diagram Studio · Redraw a pasted ASCII diagram in a Unicode connector style, then export it.Colour-Contrast & Terminal Readability Checker · WCAG 2 contrast and APCA for two colours, an ANSI palette, or the xterm-256 cube.Aspect-Ratio Visualizer · Compare source vs target aspect ratios: letterbox, pillarbox, crop, and stretch.Display Planner · Compare monitors on PPI, physical size, FOV, and pixels-per-degree across a multi-monitor desk.Display Calculator · Simplify a screen's aspect ratio and compute its pixels-per-inch.Keyboard Tester · Sweep your own keyboard for dead switches across ten enthusiast form factors.Client-Side Grep & Search · Line-level search over this site's content index, deep-linked to the page.Markdown Editor · Write Markdown with a live HTML preview and build the post's frontmatter.
random lab: Identity Flow Visualizer · Walk a SAML or OIDC login step by step: decode every redirect, token, and validation.Route & Longest-Prefix-Match Visualizer · Forward an address through an editable routing table.TCP Handshake Animator · Walk the TCP state machine one segment at a time, and watch both endpoints change state.TLS Handshake Inspector · Step through a TLS 1.3 handshake, decode the cipher suite, and walk the whole HKDF key schedule.Cryptography Lab · A 12-tab lab, Vigenère to Enigma: classical ciphers, modern building blocks, hashes and KDFs.Hash Avalanche Visualizer · See the hash avalanche effect: how a one-character change flips half of the hash output.Steganography Laboratory · Read the bit planes of a file, get a χ² verdict on hidden data, and embed or extract a payload.Compression Explorer · Step a greedy LZ77 encoder byte by byte: see the window, matches, and the size it saves.Formal Logic Compendium · A plain primer on propositions, connectives, truth tables and validity, then an Advanced workbench: build a formula from pickers and read its truth table, tableau and verdict, quantifiers in a finite model, checked proofs, and modal logic on a frame.Git DAG Simulator · Run commit, branch, checkout and merge, and watch the commit graph each one builds.PM-16 Micro-CPU · Assemble, single-step and watch a 16-bit CPU run. Predict the flag change before you step.Regular Expression Lab · Build a regular expression and watch it work: matches, groups, an explanation, three engines.Unix Signal Visualizer · Send signals to a process tree and watch them handled, ignored, blocked, or take default action.Design System Lab · Take the site's own visual/colour design system apart.Keyboard Shortcut Trainer · Drill shortcuts across application profiles: perform the task, get graded. Improve.
random toy: Drift · A seeded, animated particle field. Type a seed to reshape it.Lighthouse Keeper · A seashore day in twenty-four minutes: a turning beam, drifting weather, the keeper's log.Matrix Digital Rain · Seeded columns of glyphs falling with bright heads and decaying trails.Night Train · A seeded, endless night journey past procedural landscapes, weather, stations, and tunnels.Office After Midnight · A seeded empty night office on security cameras, with rare unexplained events.Packet Aquarium · A seeded ambient tank where synthetic network traffic swims as protocol species.Snow Globe · A seeded glass globe you furnish from a workshop palette; shake it and the flakes settle.Tiny Planet · A seed-driven miniature planet you observe from orbit: terrain, moons, eclipses.Windows · A seeded window onto a quiet, impossible place, with rare unhurried events.Ant Colony · A seeded ant colony: pheromone trails and an underground cutaway; add food, rocks, rain.Emoji Ecology · A seeded cellular-automaton ecology of plants, water, herbivores, and fire.Terminal Terrarium · A seeded terminal ecosystem where weather and light drive plants, fungi, and grazers.Chiptune Tracker · Compose on a step grid over four chip voices, play it, and export the WAV.Display Lab · A seeded historical-display exhibit with CRT scanlines, phosphor, and artifacts.Listening Port · A seeded deep-space listening station with a live spectrum, waterfall, and event log.Radio Between Stations · Tune a fictional FM band where a seed hides stations, with audio and saved bookmarks.Signal Lab · Generate DTMF, Bell MF and 2600 Hz, and watch the decoder name the tones back.Weather Machine · A seeded atmospheric console whose dials drive the sky, clouds, wind, and precipitation.Cyberpunk Terminal · A seeded synthetic network you explore from a prompt: missions drawn from a pool.Data Centre Dungeon · Work a night shift on a seeded floor: triage incidents, dispatch one crew, read the report.Pipeline Factory · Build a Unix text pipeline over a seeded log: see rows shrink, get the command.Space Station Builder · Build a cosy orbital station from a palette of modules; a comfort readout describes it.Treehouse Architect · Build a treehouse on a seeded tree's branch anchors; a structural readout rates it.ASCII Banner · Turn text into a five-row ASCII-art banner.Entropy Fountain · A seeded, deterministic fountain of bytes: the same seed replays the same spray.Hash Landscape · A deterministic decorative landscape generated from a text's SHA-256 digest.Hashprint · A deterministic, symmetric identicon generated from any text.Hourglass & Focus Timer · A tactile hourglass timer: countdown, Pomodoro or count-up. Flip it to start it.Strange Clocks · Unusual ways to render the current instant, in six families of clock face.Pet Rock · A desktop pet rock, modernized with advanced metrics and dynamic features.
random project: shhdoku.org · Sudoku with nothing on the board but the puzzle. A Svelte page that builds a board in your browser and proves it has one solution, with twenty-five rulesets, daily challenges and no ads.DonTide · An ocean you swim through as a blue whale or a great white shark. 25 procedural worlds, a field journal, releasable whirlpools and earthquakes, and no paywalls or cooldown timers.vortaye.app · A severe-weather workbench. Real-time vortex mechanics and recreations of notable historical tornadoes, with CAPE, shear and helicity as direct controls, built for someone who asked for it.toroid.top · The viral balls-in-rings genre turned into a studio. One self-contained HTML file that is sandbox, level editor, eighteen-instrument synth and video recorder at once.SPA Day · One prompt, several models, and the single-page applications each of them produced.unfathom (preview) · Screenshot preview of a descent you take screen by screen through 127 generated biomes. Version 0.3, a beta prerelease: fight, forge, take a covenant, and let the Register write down what stopped you.hlttp (preview) · A Hyperlink to the Past. A top-down adventure across nine regions and eight ruins, played in any order, in a hand-drawn HD pixel style that also switches back to the original look.adnaq · A simple tool for answering and tracking answers on generated study kits based around any subject of your choosing.totb · The Typing of the Bed. A typing game for winding down instead of speeding up: count sheep over a moonlit fence by typing the word each one carries.Values Draw · A brief coaching exercise. Sort sixty-eight value cards against a clock, then prioritize them to your preference, and find out which ones you actually keep when two of them collide.vibecode · A browser-local generative music instrument with Machine, Vibe, Wub, and Loop workspaces for sequencing, directing, performing, and revisiting sound.Throttle and Chain · Throttle and Chain, a pseudo-3D motorcycle combat racer where traffic, rival riders, hazards, and a countdown all compete for the road.plusminus · An interactive exploration of physical scale, digital systems, and organized life. Start somewhere familiar, then zoom outward for context or inward to investigate the structures and processes that make it possible.Garden Quest · A garden that grows dragons. Arrange plants across a floating island, keep or hatch the eggs they produce, and discover a hidden clearing where your companions play together. Nothing dies, and grumpy dragons are not a problem to fix.Upward · A city built one floor at a time. Homes, shops, offices and cinemas share a cutaway tower, with people to look after, lifts to untangle, and a five-chapter story or independent free play.xaio · A martial-arts movie that plays itself. One white stick figure fights through five procedural worlds, improvising with whatever is within reach. Recurring rivals, changing bosses and an Endless Film mode keep the night going.aVoid · Choose when to be heard. A ping reveals a dark room for a moment and tells its sentries where you are standing.Paint 1995 · A browser drawing scratchpad with a toolbox, a palette and a blank canvas. Draw, undo and export an image without uploading it.Angles · Minigolf and pool with the table doing most of the talking. Forty hole layouts, nine- or eighteen-hole rounds, and twenty-four computer opponents. Point, shoot, and play in your browser.tva · A calm flight game for the browser: fly over real places, under the real sky and the real weather, rebuilt as a toon-shaded voxel world.Brickwork · A brick-breaker across fourteen material worlds. Dismantle ceramic arches, fracture linked glass, and unfasten timber frames. Includes 168 authored boards, daily challenges, repeatable endless runs, and a local editor. The fewer bricks remain, the faster the ball gets.FULL SEND · An arcade racer with twenty-three original circuits, twenty-one rivals, and a clock to beat. Quick races or a complete World Tour, with the cars, scenery, sound, and saved progress handled in your browser.
Many other options are available in the sections on the top menu above.