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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.
98 lines
5.7 KiB
Markdown
98 lines
5.7 KiB
Markdown
# Phase A — Meta's own picture-size page, read first-hand
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| URL | `https://www.facebook.com/help/125379114252045` |
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| Title | „A Facebook-oldalak profilképének és borítóképének méretei \| Facebook Súgóközpont" |
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| Read at | 2026-10-08 18:04:31 UTC (20:04 CEST) |
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| How | Claude in Chrome on the Windows workstation, tab „Számítógépes súgó" (the default tab for a desktop browser) |
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| Screenshot | `A-meta-sizes-screenshot.jpg` |
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DooPlex could not open this page (it needs a browser); this is the first first-hand read.
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## The quote — verbatim, every pixel figure
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> A logódat vagy szöveget is tartalmazó profilképek és borítóképek esetén PNG-fájl használatával jobb
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> eredményt érhetsz el.
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>
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> A borítóképed bal oldalát részben takarni fogja a profilképed, és előfordulhat, hogy körül lesz vágva
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> és át lesz méretezve, hogy igazodjon a különböző képernyőkhöz.
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>
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> **Facebook-oldal profilképe**
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>
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> Az oldal profilképének tulajdonságai:
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>
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> - Számítógépen 176×176, okostelefonon 196×196, hagyományos mobiltelefonon 36×36 képpontos méretben
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> jelenik meg az oldaladon.
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> - Kör alakban körül van vágva.
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> - A legjobb minőséghez 320 képpont széles és 320 képpont magas képet érdemes használni.
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>
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> **Facebook-oldal borítóképe számítógépen**
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>
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> - Balra igazítva jelenik meg, a teljes oldalt kitölti, oldalaránya 16:9.
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> - Legalább 400 képpont szélesnek és 150 képpont magasnak kell lennie.
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> - Leggyorsabban sRGB JPG formátumú, 851 képpont széles és 315 képpont magas, 100 kB méretnél kisebb
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> fájlként töltődik be.
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>
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> **Facebook-oldal borítóképe mobileszközön**
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>
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> - Balra igazítva jelenik meg, a teljes oldalt kitölti, oldalaránya 2,4:1.
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> - Legalább 400 képpont szélesnek és 150 képpont magasnak kell lennie.
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> - Leggyorsabban sRGB JPG formátumú, 851 képpont széles és 315 képpont magas, 100 kB méretnél kisebb
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> fájlként töltődik be.
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> - A profilkép mobileszközön körülbelül 40 képponttal átfedi a borítóképet.
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## Every figure, as a table
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| Thing | Meta says |
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| Profile picture, displayed, computer | 176 × 176 |
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| Profile picture, displayed, smartphone | 196 × 196 |
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| Profile picture, displayed, feature phone | 36 × 36 |
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| Profile picture, shape | circle crop |
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| Profile picture, source to upload | 320 × 320 („a legjobb minőséghez") |
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| Cover, computer, aspect ratio | 16:9 |
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| Cover, computer, minimum | 400 wide × 150 high |
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| Cover, computer, fastest-loading file | sRGB JPG, 851 × 315, < 100 kB |
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| Cover, mobile, aspect ratio | 2,4:1 |
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| Cover, mobile, minimum | 400 wide × 150 high |
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| Cover, mobile, fastest-loading file | sRGB JPG, 851 × 315, < 100 kB |
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| Profile circle over the cover, mobile | overlaps by about 40 px |
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| File format for a cover/profile with a logo or text | PNG beats JPG |
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## Compared with `marketing/facebook/README.md` „Sizes used"
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**Different.** The grade stays a grade of *our* figures, and most of ours are not on Meta's page at all.
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| Ours (second-hand) | Meta's page | Verdict |
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| 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 |
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| 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 |
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| 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) |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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### Meta's page contradicts itself, and that is the quote's own problem, not ours
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Meta states the computer cover ratio as **16:9 (1,78:1)** and the mobile cover ratio as **2,4:1**, and
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then recommends **the same 851 × 315 file (2,70:1) for both**. No one file satisfies all three. This is
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recorded, not resolved — Phase C measures the live Page instead, which is a different channel from this
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help page.
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### Are the pictures still safe?
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**Not answered here, by design.** The task says: do not rebuild in this phase. What can be said from the
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numbers alone:
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- Our 1640 × 624 cover is **far above** both stated minimums (400 × 150) and is PNG, which Meta prefers
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for pictures carrying a logo or text.
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- The safe area we build to — the centre **1028 × 544** of 1640 × 624 — is 1,89:1, which sits **inside**
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both of Meta's stated ratios (1,78:1 and 2,40:1) on the horizontal axis but is **taller** than 16:9
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allows at that width. So the arithmetic does not by itself guarantee the computer view is clear.
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- Meta's mobile profile-circle overlap of **~40 px** (on a 196 px circle) is larger than the 24 px our
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README assumed, so slightly more of the cover's bottom-left is hidden on a phone than we planned for.
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**Phase C is the measurement.** Its screenshots at 1440 px and 390 px decide whether anything is cut.
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