Printable cheat sheets and posters
Seven one-page references you can print or save as a PDF: five cheat sheets that fit a single A4 or Letter page, and two color posters that print up to A2 and download as high-resolution PNG files.
One-page cheat sheets
| Sheet | What is on it | Paper |
|---|---|---|
| HTTP status codes cheat sheet (printable) | 62 official codes plus nginx and Cloudflare, grouped by class | A4, Letter |
| chmod cheat sheet (printable) | Octal digits, 25 common modes, special bits, symbolic syntax, find | A4, Letter |
| Cron cheat sheet (printable) | Fields, special characters, macros, 20 schedules, gotchas | A4, Letter |
| Git cheat sheet (printable) | Everyday commands, branches, stash and 14 undo recipes | A4, Letter |
| Regex cheat sheet (printable) | Syntax, lookarounds, flags and 15 tested patterns | A4, Letter |
Color posters
| Sheet | What is on it | Paper |
|---|---|---|
| CSS named colors poster (printable) | All 148 keywords as labeled swatches, sorted by hue | A4, Letter, A3, A2 |
| Tailwind CSS colors poster (printable) | 286 swatches: 26 colors by 11 shades, hex and oklch() | A3, A2 |
How these sheets are made
Each sheet is built from the same data as the reference sections of this site, which are checked against primary sources: RFC 9110 and the IANA registry for HTTP, GNU coreutils for chmod, crontab(5) and each platform's documentation for cron, CSS Color 4 and Tailwind's theme.css for the colors, git-scm.com for Git. When the reference is corrected, the sheet changes with it.
The layout is typeset for paper, not squeezed from a web page: a strict column grid, hairline rules, tabular figures so codes and hex values line up, and nothing smaller than 7pt at print size. Printing always uses black on white, whatever theme you read the site in, and the page scales the sheet to fill the paper you pick without spilling onto a second page.
A sheet for your own stack
If your team wants the same treatment for an internal API, a CLI or a style guide, write to contact@arielton.com.
Frequently asked questions
- Are these cheat sheets free?
- Yes. Print as many copies as you want for yourself, your team or a classroom. To share one online, link to its page; every page has a ready-made link you can copy.
- How do I save a cheat sheet as a PDF?
- Open the sheet, pick the paper size and press Print / Save as PDF. In the print dialog choose Save as PDF as the destination (Chrome, Edge, Firefox) or open the PDF menu and choose Save as PDF (Safari on macOS).
- Why does a sheet print on two pages?
- Usually the print dialog is overriding the page setup. Set the scale to Default or 100% and the margins to Default, and make sure the paper in the dialog matches the one picked on the page. Safari ignores the page size a site asks for, so choose the paper in its dialog.
- Why do the color posters print without colors?
- Browsers skip background colors when printing unless you allow them. Turn on Background graphics (Chrome, Edge) or Print backgrounds (Firefox, Safari) in the print dialog.
Last reviewed by Arielton Oberek.