Write a landing page as one Markdown document, with features, steps and a FAQ as fenced sections, and see it rendered. Free, no account, nothing stored.
All the free tools
Every tool fastast serves, each on its own page. No account, no e-mail, nothing stored — open one, use it, close the tab.
Every tool here does one thing, on one page, and asks nothing of you: no account, no e-mail address, no cookie banner to dismiss before you can work. Type what you need, read the answer, close the tab. Nothing you enter is kept.
Each tool has its own address, so a link to one is a link to that tool alone. The list below is the whole set, and the search box filters it by name or by what a tool does.
Two-factor authenticator in your browser, from the secret a service shows at setup. A bookmark and your passkey are the key: nothing stored, no app.
Which side of the train, bus, plane or ferry gets the sun on your trip, and which window your landmark is behind. Two cities, a departure time. Free.
What colour the clear sky is over any city, right now or at a chosen moment: the gradient, hex codes and CSS, the light of the hour and when it changes.
Every retrograde period of a year, Mercury through Pluto, station to station with dates and durations. Download the table or subscribe as a calendar.
Paste 24 squares, get a 5×5 bingo card — shuffled, free centre, sized for a story and ready to print. Free, no sign-up, nothing stored.
How many days until a date — a wedding, a launch, a race — drawn as a card that says when it was counted. Free, no sign-up, and the link keeps counting.
How many days since a date — together, sober, since the dog came home — drawn as a card with the next milestone on it. Free, no sign-up, nothing stored.
Turn your slides into the PDF LinkedIn takes as a document post, and the images Instagram takes. Free, no sign-up.
Turn any quote into a shareable image, ready to post. Free, no sign-up, nothing stored.
What time it is in any city, with time zone, UTC offset and daylight saving. Convert between two cities, copy the epoch, ISO 8601 or Discord timestamp.
Record of processing activities template (GDPR Article 30) for controllers and processors, with the Article 35 screening. Free, nothing stored.
The exact instant the Sun returns to your birth degree, the solar return chart for where you will be, and up to five places side by side. Free.
Transit chart calculator: where the planets stand against your birth chart, which houses they cross, what they touch now, and the exact dates ahead.
Timelapse calculator: how long your clip will be, how many frames it takes and how much card space it eats, before you spend the evening finding out.
How long your trails will be, how many frames the session takes, and whether the gap between them will turn the trails into dotted lines. Free, no sign-up.
What to set once the filter is on — including two filters stacked, where the stops add and the numbers on the rings do not. Free, no sign-up, nothing stored.
Hyperfocal distance calculator: where to focus so foreground and horizon come out sharp, and exactly what is sharp if you focus elsewhere. Free.
NPF rule calculator: how long you can expose the night sky before stars trail, from your sensor, lens and where you point, not focal length alone.
Free scan-to-pay QR for your invoices (EPC069-12): the payer's banking app opens a transfer already filled in. The IBAN is verified before anything is encoded.
Free vCard QR code: scanned, it adds your details to a phone's address book. Also an e-mail signature to paste and a printable sheet for a whole team.
Free WiFi QR code: guests scan it and their phone offers to join, no key to spell out. Print a guest card or a sheet for several networks. Nothing stored.
Free architecture forms: decision records, quality requirements, constraints, stakeholders, and application, process and flow inventories. Nothing stored.
When the Sun or Moon lines up with a street, a bridge or a ridge from where you stand: give a bearing or a landmark, get twelve months of dates.
Equinox and solstice dates for any year, to the minute in UTC, with cross-quarter days, perihelion, aphelion and your own longest day. Free.
Check an IBAN free: country, length and modulo-97 check digits, anatomy and printable form. Validate a whole column, or build one from an account number.
Free barcode generator: EAN-13, UPC-A, Code 128, ITF-14, DataMatrix, PDF417 and more, check digit worked out, a run of codes as a sheet of labels.
Which nights of the next year the Milky Way core is visible from your location: dark sky, no Moon, core high enough, grouped into runs. Free.
Synastry chart calculator: every contact between two people's planets, ranked by strength, or folded into a composite or Davison chart. Free.
Build a working form and get its link: pick what you ask, drop what you do not need, choose where answers go. Free, no sign-up, nothing stored.
Free QR code generator for a link, phone number, e-mail, place or calendar event. Download as PNG or SVG, print a sheet, or read a code back.
Golden hour, blue hour, sunrise, sunset and day length for your city, day by day over a month, in local time. Free, no sign-up.
Moon phase calendar for your city: every night's phase, illumination, moonrise and moonset, distance and size, and how big it is on your lens.
Solve any sudoku, get a hint that names the technique, play today's grid, or generate a fresh one with a single solution: 6x6, 9x9 or 16x16. Free.
Latitude and longitude of any city in decimal, DMS and DDM, with country and time zone. Reverse lookup, distance, bearing, and CSV lists. Free.
Your full natal chart from birth date, time and city: the wheel, placements, houses and every aspect, with a proper answer if the time is unknown. Free.
Secure password generator: three strong random passwords or a passphrase of real words, each with its entropy and time to crack. Free, nothing stored.