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Ran marketing/facebook/TASK-page-setup-windows.md from the Windows workstation through Claude in Chrome. Evidence in documentation/audits/facebook-page-setup-2026-10-08/, report in REPORT-facebook-page-setup.md. Done, each read back from a different channel than the edit: the intro is COPY.md §1 (Graph `about` hex-equal, 99 chars); the action button is "További információ" to https://felhom.eu/; the Messenger welcome is COPY.md §3 (hex-equal) and the automation is on; the username is felhom.eu, so the Page answers at facebook.com/felhom.eu. Not done: COPY.md §2 has no field to go in — Facebook's current Pages experience has no long-description field and the Graph `description` is null and unwritable with the robot key's scopes. R-917, four options, operator's call; no Hungarian copy was shortened. Phase A read Meta's size page first-hand: it carries none of the 820x312 / 640x360 figures our README asserted, and its own two ratios contradict the file it recommends. README's grade and comparison rewritten; what we build is unchanged. Phase C measured the computer width (cover whole, no crop, profile circle 16 px clear). The 390 px phone check was NOT performed: narrowing a desktop browser never gives Facebook's phone layout. R-918. Nothing posted; no ad, no boost, no Meta Verified; the Meta app stays in development mode; no host, guest, box or hub touched.
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Phase A — Meta's own picture-size page, read first-hand
| URL | https://www.facebook.com/help/125379114252045 |
| Title | „A Facebook-oldalak profilképének és borítóképének méretei | Facebook Súgóközpont" |
| Read at | 2026-10-08 18:04:31 UTC (20:04 CEST) |
| How | Claude in Chrome on the Windows workstation, tab „Számítógépes súgó" (the default tab for a desktop browser) |
| Screenshot | A-meta-sizes-screenshot.jpg |
DooPlex could not open this page (it needs a browser); this is the first first-hand read.
The quote — verbatim, every pixel figure
A logódat vagy szöveget is tartalmazó profilképek és borítóképek esetén PNG-fájl használatával jobb eredményt érhetsz el.
A borítóképed bal oldalát részben takarni fogja a profilképed, és előfordulhat, hogy körül lesz vágva és át lesz méretezve, hogy igazodjon a különböző képernyőkhöz.
Facebook-oldal profilképe
Az oldal profilképének tulajdonságai:
- Számítógépen 176×176, okostelefonon 196×196, hagyományos mobiltelefonon 36×36 képpontos méretben jelenik meg az oldaladon.
- Kör alakban körül van vágva.
- A legjobb minőséghez 320 képpont széles és 320 képpont magas képet érdemes használni.
Facebook-oldal borítóképe számítógépen
- Balra igazítva jelenik meg, a teljes oldalt kitölti, oldalaránya 16:9.
- Legalább 400 képpont szélesnek és 150 képpont magasnak kell lennie.
- Leggyorsabban sRGB JPG formátumú, 851 képpont széles és 315 képpont magas, 100 kB méretnél kisebb fájlként töltődik be.
Facebook-oldal borítóképe mobileszközön
- Balra igazítva jelenik meg, a teljes oldalt kitölti, oldalaránya 2,4:1.
- Legalább 400 képpont szélesnek és 150 képpont magasnak kell lennie.
- Leggyorsabban sRGB JPG formátumú, 851 képpont széles és 315 képpont magas, 100 kB méretnél kisebb fájlként töltődik be.
- A profilkép mobileszközön körülbelül 40 képponttal átfedi a borítóképet.
Every figure, as a table
| Thing | Meta says |
|---|---|
| Profile picture, displayed, computer | 176 × 176 |
| Profile picture, displayed, smartphone | 196 × 196 |
| Profile picture, displayed, feature phone | 36 × 36 |
| Profile picture, shape | circle crop |
| Profile picture, source to upload | 320 × 320 („a legjobb minőséghez") |
| Cover, computer, aspect ratio | 16:9 |
| Cover, computer, minimum | 400 wide × 150 high |
| Cover, computer, fastest-loading file | sRGB JPG, 851 × 315, < 100 kB |
| Cover, mobile, aspect ratio | 2,4:1 |
| Cover, mobile, minimum | 400 wide × 150 high |
| Cover, mobile, fastest-loading file | sRGB JPG, 851 × 315, < 100 kB |
| Profile circle over the cover, mobile | overlaps by about 40 px |
| File format for a cover/profile with a logo or text | PNG beats JPG |
Compared with marketing/facebook/README.md „Sizes used"
Different. The grade stays a grade of our figures, and most of ours are not on Meta's page at all.
| Ours (second-hand) | Meta's page | Verdict |
|---|---|---|
| cover shown 820 × 312 on computers | not stated — Meta gives a ratio (16:9), a minimum (400 × 150) and a fastest-loading size (851 × 315) | not confirmed; no 820 × 312 anywhere on Meta's page |
| cover shown 640 × 360 on phones | not stated — Meta gives 2,4:1, minimum 400 × 150, 851 × 315 | not confirmed; and 640 × 360 is 16:9, which Meta puts on the computer, not the phone |
| profile picture shown about 176 px | 176 × 176 on computer | confirmed (and Meta adds 196 × 196 on a smartphone, 36 × 36 on a feature phone) |
| profile circle over the cover: 16 px / 176 px (computer), 24 px / 196 px (phone) | only „körülbelül 40 képponttal átfedi" on mobile; nothing for the computer | different — Meta's mobile overlap is ~40 px, not 24 px; the computer overlap is not stated |
| built at 2×: 1640 × 624 (= 2,63:1) | 851 × 315 is 2,70:1; „16:9" is 1,78:1; „2,4:1" is 2,40:1 | our ratio is between Meta's two ratios and close to its own recommended file's ratio |
| PNG for the pictures | „A logódat vagy szöveget is tartalmazó profilképek és borítóképek esetén PNG-fájl… jobb eredményt" | confirmed — our PNGs are the right format |
| profile source 932 × 932 (unscaled logo master) | 320 × 320 „a legjobb minőséghez" | ours is larger than Meta's recommendation, i.e. downscaled not upscaled — safe |
Meta's page contradicts itself, and that is the quote's own problem, not ours
Meta states the computer cover ratio as 16:9 (1,78:1) and the mobile cover ratio as 2,4:1, and then recommends the same 851 × 315 file (2,70:1) for both. No one file satisfies all three. This is recorded, not resolved — Phase C measures the live Page instead, which is a different channel from this help page.
Are the pictures still safe?
Not answered here, by design. The task says: do not rebuild in this phase. What can be said from the numbers alone:
- Our 1640 × 624 cover is far above both stated minimums (400 × 150) and is PNG, which Meta prefers for pictures carrying a logo or text.
- The safe area we build to — the centre 1028 × 544 of 1640 × 624 — is 1,89:1, which sits inside both of Meta's stated ratios (1,78:1 and 2,40:1) on the horizontal axis but is taller than 16:9 allows at that width. So the arithmetic does not by itself guarantee the computer view is clear.
- Meta's mobile profile-circle overlap of ~40 px (on a 196 px circle) is larger than the 24 px our README assumed, so slightly more of the cover's bottom-left is hidden on a phone than we planned for.
Phase C is the measurement. Its screenshots at 1440 px and 390 px decide whether anything is cut.