What’s on the Cookies & Storage poster
A 4-row table: Store · Sent to server? · Use for.
Persistence and access differ in ways that matter for security.
- Cookie — Yes, every request — Sessions, auth
- localStorage — No — Preferences, drafts
- sessionStorage — No — Per-tab state
- IndexedDB — No — Large structured data
HttpOnly stops JavaScript reading a cookie, which is why session tokens belong there and not in localStorage.
Questions about the Cookies & Storage poster
- What’s on the Cookies & Storage poster?
- A 4-row table: Store · Sent to server? · Use for. Persistence and access differ in ways that matter for security. Cookie — Yes, every request — Sessions, auth; localStorage — No — Preferences, drafts; sessionStorage — No — Per-tab state; IndexedDB — No — Large structured data. HttpOnly stops JavaScript reading a cookie, which is why session tokens belong there and not in localStorage.
- Who is the Cookies & Storage poster for?
- Cookies & Storage belongs to the Computing section rather than to a school year, because computing is not something one grade owns. Anyone learning the web can pin it up — a beginner, a student mid-course, or someone revising years later.
- When should you use the Cookies & Storage poster?
- Cookies for sessions, localStorage for preferences. Never put a token in localStorage. A wall chart earns its place by being glanceable from where the work is happening, so Cookies & Storage belongs on the wall where that computing work actually happens, within glancing distance, rather than filed away.
- What other posters go with Cookies & Storage?
- Accessibility, ARIA and How a Browser Renders sit alongside Cookies & Storage in the Computing section. Printed together they make a wall rather than a single sheet, which is how a reference set actually gets used.AccessibilityARIAHow a Browser Renders
- Is the Cookies & Storage poster free to download and print?
- Yes. Cookies & Storage downloads as a free PDF with no account, no email and no watermark, like everything else in the Computing section. Print as many copies as you like for a home, a classroom, a library or a tutoring group; reselling the file is the only thing the licence rules out.Read the licence
- What size does the Cookies & Storage poster print at?
- Cookies & Storage is a vector PDF laid out for US Letter, and prints on A4 with Fit to page — the same file, no separate download. Because every mark on it is drawn rather than photographed, it stays sharp enlarged to A3, A2 or A1 at a copy shop. Colour carries emphasis only, so a greyscale print of Cookies & Storage loses nothing.Printing guide
Related posters
Charts that sit alongside Cookies & Storage on the same wall.
Browse every Computing poster, or start from the full catalogue.