Why a Physical Holiday Card Still Matters
In an era of group texts and automated birthday posts, a physical holiday card does something no notification can replicate: it proves you thought of someone specifically, wrote their name on an envelope, licked a stamp, and put it in the post. That sequence of deliberate effort is the signal. The card itself is almost secondary — what it communicates is: you are in my address book, and I keep an address book.
Research on social network structure — including Dunbar's foundational work on the neocortex size constraints on primate social group size (Journal of Human Evolution, 22(6), 469–493; DOI: 10.1016/0047-2484(92)90081-J) — suggests that humans maintain roughly 150 meaningful relationships, with an inner core of around 50 people who receive the most regular attention. A holiday card list that covers that inner-50 is not a nostalgic tradition; it is an annual relationship maintenance practice with social-scientific backing.
The difficulty is the logistics: collecting addresses, formatting them correctly for labels, keeping the list from year to year, and actually getting the sheets through a home printer without a fight. This tool handles the formatting so you can focus on the list itself.
Avery 5160 Mail Labels: The Standard, Decoded
Avery 5160 is the US de-facto standard for address labels: 30 labels per sheet, three columns of ten, each label measuring 2⅝ × 1 inch (66.675 × 25.4 mm). The sheet is US Letter (8.5 × 11 inches), which means it prints on any home or office printer with a standard paper tray. The same layout is sold under dozens of brand names — any "30-up letter label" or "Avery-compatible 5160" product will work with this tool's output.
The PDF this tool generates is built to the Avery 5160 specification: exact margin and cell geometry so labels line up with the adhesive backing. Text is sized to fit the label area with sensible margins, and multi-line addresses (name, street, optional apt/unit, city/state/zip, optional country) are stacked automatically. You paste plain text; the PDF does the alignment.
How to Print Labels That Actually Line Up
Label misalignment is almost always a printer-scaling issue, not a file error. The two settings to check before printing:
Disable "fit to page" / "scale to margins". Every major PDF viewer (Adobe Acrobat, Preview on macOS, Chrome's built-in viewer) has an option to scale the document to fit the printable area. This sounds helpful but shrinks or stretches the page, shifting every label row and column a fraction of an inch — enough to miss the adhesive. Look for "Actual size," "100%," or "No scaling" in your print dialog. On macOS Preview, choose "Scale: 100%". In Chrome, set "Scale: 100" and disable "Fit to page."
Use the correct paper size. The PDF is Letter-sized (8.5 × 11 in). If your printer defaults to A4 (which is slightly longer and narrower), it will scale the page to fit and misalign every label. Make sure the print dialog shows "US Letter" or "8.5 × 11 in." If you're outside North America and using A4 label sheets, note that A4 Avery-compatible products usually use a different layout (typically Avery L7160 or 3490, with 21 labels per sheet) — the PDF from this tool is Letter-only.
Mail-Merge CSV vs Printable List — Which to Choose
This tool exports three formats. Choose the one that matches your workflow:
Avery 5160 PDF — Use this if you have Avery 5160 label sheets (or a compatible 30-up Letter product) and want to print directly. No software required beyond a PDF viewer. Best for most households sending 20–150 cards.
Address list PDF — A clean, single-column list of all recipients: name, address, sorted alphabetically. Use this as a reference list for hand-addressing, as a backup you can file, or to hand off to a calligrapher. Works well for smaller lists or when you prefer to hand-address for a more personal effect.
Mail-merge CSV — A comma-separated spreadsheet with one row per recipient and labelled columns (name, line1, line2, city, region, postalCode, country). Import this into Microsoft Word Mail Merge, LibreOffice, Canva, or any platform that accepts CSV data sources. Best for large lists (150+), custom-designed envelopes, or when you want to produce addressed digital files rather than physical labels.
Privacy: Your Address Book Never Leaves This Browser
Holiday card lists contain some of the most sensitive data you own: the home addresses of your closest friends and family. This tool is entirely client-side. When you paste addresses, that data lives only in your browser's memory — nothing is sent to any server. The PDF and CSV are generated locally using standard browser APIs and downloaded directly to your device. Endearist's servers never see a single address.
The optional "Save in this browser" toggle stores your list in your browser's localStorage — a sandboxed, device-local store that other websites cannot access. The data never leaves your device through that path. If you use the "Copy link" button, the list is encoded into the URL itself as a Base64 string — it travels only when you explicitly share that link, and only to whoever receives it.
You can clear saved data at any time using the "Clear saved list" button, which removes the entry from localStorage immediately. Closing the tab without saving leaves no trace.
Who Goes On the Card List?
Deciding who makes the list is the hardest part — not the printing. A useful framing comes from Dunbar's research on social layers: your inner-50 are the people you would feel genuine loss about if you lost contact with them. That circle tends to include close family, old friends who have moved away, mentors, former colleagues who became real friends, and neighbours from previous chapters of your life.
A holiday card is one of the lowest-cost, highest-signal relationship maintenance gestures available. It takes about two minutes to address an envelope and write a line or two inside. For someone who has moved away or whom you rarely see, receiving a card communicates something that a text or a like never does: you are still in my life, deliberately. The Dunbar Calculator can help you think through who occupies your inner layers if the list feels hard to scope.
Holiday cards, like the tools to manage them, are a small investment in the relationships that make a life feel full. When Endearist launches, your card list will be part of a fuller picture — warmth-tracked, gently reminded, and connected to everything else you know about the people who matter. Join the waitlist to be among the first to know.