Open Finance Guide — goflag preview

What each surface makes of https://openfinanceguide.com/, drawn from what the pages declared. Each surface carries the rigor of the geometry it is drawn from — three of the seven publish one, two publish nothing at all, and Google is not a card.

/en

https://openfinanceguide.com/en

200 · read from the static HTML — what a crawler that runs no JavaScript sees · en_US

Open Graph — the source cardvendor-spec
Open Finance Guide — Open banking & PSD2 reference
title
Open Finance Guide og:title
description
Open banking specifications, glossary and references — independent and neutral. og:description
image
https://openfinanceguide.com/og?title=Open+Finance+Guide&description=Open+banking+%26+PSD2+reference og:image
size
1.90:1 declared — inside the 1.91:1 band every card is laid out for
fetched
not probed on this run
alt
Open Finance Guide — Open banking & PSD2 reference
locale
en_US

The one fully specified surface: 1200×630 recommended, 600×315 floor, 200×200 absolute minimum, 8MB, 1.91:1. Every surface below consumes this image, each in its own way.

developers.facebook.com/docs/sharing/webmasters/images · ogp.me
Google — search resultheuristic
Open Finance Guideopenfinanceguide.com › en

Open Finance Guide — Open banking & PSD2 reference

An independent, open reference for open banking: a navigable STET PSD2 specification, a clear glossary and references for technical teams.

Not a card: no image, no ratio. og:title is one of the documented sources for the title link; og:description is not documented as a snippet source anywhere — the snippet comes from the page or from meta description.

Not drawn hereGoogle publishes no character or pixel limit — only truncation “to fit the device width”. The two-line snippet above is the observed desktop shape, not a specification, and the 600px / 155-character figures in circulation are third-party measurements that disagree with each other.

developers.google.com/search/docs/appearance/title-link · /snippet
X — link cardunsourced
Open Finance Guide — Open banking & PSD2 reference
Open Finance Guideopenfinanceguide.com

Image, headline over the image, domain. Nothing else. This page declares twitter:card as summary_large_image.

The old card is a lieX removed both headline and description on 4 October 2023. The headline came back in January 2024 as small text over the image; the description never did. Headline-below-image exists only for ads since May 2025. Any tool still drawing three stacked rows is drawing a card that has not existed for years.

X card documentation is not publicly reachable — dated behaviour, not a spec
LinkedIn — post unfurlvendor-spec
Open Finance Guide — Open banking & PSD2 reference
Open Finance Guideopenfinanceguide.com

Four tags required — og:title, og:image, og:description, og:url — and a published geometry: 1200×627 minimum, 1.91:1, 5MB. Under 401px wide the card falls back to a thumbnail, which is the only documented layout switch of any surface here.

linkedin.com/help/linkedin/answer/a521928
Slack — unfurlguideline
Open Finance Guide Open Finance Guide

Open banking specifications, glossary and references — independent and neutral.

Open Finance Guide — Open banking & PSD2 reference

Slack documents what it reads — Open Graph and X Card metadata — and calls the result “some micro-approximation of the content”. No geometry, no image minimum, no character limit is published. The one hard number: past five links in a message, nothing expands.

docs.slack.dev/messaging/unfurling-links-in-messages
Discord — embedunsourced
Open Finance Guide Open Finance Guide

Open banking specifications, glossary and references — independent and neutral.

Open Finance Guide — Open banking & PSD2 reference

Discord publishes nothing about link unfurls: no tag table, no geometry. The accent bar is drawn from a default, since this page declares no theme-color, which is community-reported behaviour and not documented.

Wrong numbers, right documentDiscord's documented 256 / 4096 / 6000 character limits are real, and they govern embeds a bot sends through the API. Using them as unfurl truncation would be a sourcing error of exactly the kind the rigor scale exists to prevent.

no Discord source exists for link previews
WhatsApp — link previewvendor-spec
Open Finance Guide

Open banking specifications, glossary and references — independent and neutral.

openfinanceguide.com
https://openfinanceguide.com/en

The one messenger with a real spec from Meta: image under 600KB, at least 300px wide, aspect ratio 4:1 or less, title in at most two lines, description in one or two — “80 characters will suffice”. It is also the only surface where a 1200×630 card is more often too heavy than too small.

developers.facebook.com/documentation/business-messaging/whatsapp/link-previews

Findings on the head

  • og.locale.alternates Open Graph and hreflang disagree about this page's translations: no og:locale:alternate for fr, pt-br, es. warning · vendor-spec · expected one og:locale:alternate per hreflang locale other than this page's own

This route in 2 languages

pathog:localeog:titlegr.desc.
▸ en en_US Open Finance Guide 18 79
fr fr_FR Open Finance Guide 18 79

Lengths are graphemes, which is what a card's size ladder counts. The ladder is the site's own — @goflag/og ships none — so this reports the length and not the step.

Static vs hydrated

Not established — this run never rendered the page, so there is no second reading to compare against.

JSON-LD extracted, unjudged

No application/ld+json block on this page — and no rule can hold that against it.

Shown, never judged: no rule in the catalogue reads jsonLd, and that refusal is deliberate — nothing says which schema a page should carry.

/fr

https://openfinanceguide.com/fr

200 · read from the static HTML — what a crawler that runs no JavaScript sees · fr_FR

Open Graph — the source cardvendor-spec
Open Finance Guide — Référence open banking & DSP2
title
Open Finance Guide og:title
description
Spécifications, glossaire et références open banking — indépendants et neutres. og:description
image
https://openfinanceguide.com/og?title=Open+Finance+Guide&description=R%C3%A9f%C3%A9rence+open+banking+%26+DSP2 og:image
size
1.90:1 declared — inside the 1.91:1 band every card is laid out for
fetched
not probed on this run
alt
Open Finance Guide — Référence open banking & DSP2
locale
fr_FR

The one fully specified surface: 1200×630 recommended, 600×315 floor, 200×200 absolute minimum, 8MB, 1.91:1. Every surface below consumes this image, each in its own way.

developers.facebook.com/docs/sharing/webmasters/images · ogp.me
Google — search resultheuristic
Open Finance Guideopenfinanceguide.com › fr

Open Finance Guide — Référence open banking & DSP2

Référence indépendante et ouverte sur l’open banking : spécification STET PSD2 explorable, glossaire clair et références pour les équipes techniques.

Not a card: no image, no ratio. og:title is one of the documented sources for the title link; og:description is not documented as a snippet source anywhere — the snippet comes from the page or from meta description.

Not drawn hereGoogle publishes no character or pixel limit — only truncation “to fit the device width”. The two-line snippet above is the observed desktop shape, not a specification, and the 600px / 155-character figures in circulation are third-party measurements that disagree with each other.

developers.google.com/search/docs/appearance/title-link · /snippet
X — link cardunsourced
Open Finance Guide — Référence open banking & DSP2
Open Finance Guideopenfinanceguide.com

Image, headline over the image, domain. Nothing else. This page declares twitter:card as summary_large_image.

The old card is a lieX removed both headline and description on 4 October 2023. The headline came back in January 2024 as small text over the image; the description never did. Headline-below-image exists only for ads since May 2025. Any tool still drawing three stacked rows is drawing a card that has not existed for years.

X card documentation is not publicly reachable — dated behaviour, not a spec
LinkedIn — post unfurlvendor-spec
Open Finance Guide — Référence open banking & DSP2
Open Finance Guideopenfinanceguide.com

Four tags required — og:title, og:image, og:description, og:url — and a published geometry: 1200×627 minimum, 1.91:1, 5MB. Under 401px wide the card falls back to a thumbnail, which is the only documented layout switch of any surface here.

linkedin.com/help/linkedin/answer/a521928
Slack — unfurlguideline
Open Finance Guide Open Finance Guide

Spécifications, glossaire et références open banking — indépendants et neutres.

Open Finance Guide — Référence open banking & DSP2

Slack documents what it reads — Open Graph and X Card metadata — and calls the result “some micro-approximation of the content”. No geometry, no image minimum, no character limit is published. The one hard number: past five links in a message, nothing expands.

docs.slack.dev/messaging/unfurling-links-in-messages
Discord — embedunsourced
Open Finance Guide Open Finance Guide

Spécifications, glossaire et références open banking — indépendants et neutres.

Open Finance Guide — Référence open banking & DSP2

Discord publishes nothing about link unfurls: no tag table, no geometry. The accent bar is drawn from a default, since this page declares no theme-color, which is community-reported behaviour and not documented.

Wrong numbers, right documentDiscord's documented 256 / 4096 / 6000 character limits are real, and they govern embeds a bot sends through the API. Using them as unfurl truncation would be a sourcing error of exactly the kind the rigor scale exists to prevent.

no Discord source exists for link previews
WhatsApp — link previewvendor-spec
Open Finance Guide

Spécifications, glossaire et références open banking — indépendants et neutres.

openfinanceguide.com
https://openfinanceguide.com/fr

The one messenger with a real spec from Meta: image under 600KB, at least 300px wide, aspect ratio 4:1 or less, title in at most two lines, description in one or two — “80 characters will suffice”. It is also the only surface where a 1200×630 card is more often too heavy than too small.

developers.facebook.com/documentation/business-messaging/whatsapp/link-previews

Findings on the head

  • og.locale.alternates Open Graph and hreflang disagree about this page's translations: no og:locale:alternate for en, pt-br, es. warning · vendor-spec · expected one og:locale:alternate per hreflang locale other than this page's own

This route in 2 languages

pathog:localeog:titlegr.desc.
en en_US Open Finance Guide 18 79
▸ fr fr_FR Open Finance Guide 18 79

Lengths are graphemes, which is what a card's size ladder counts. The ladder is the site's own — @goflag/og ships none — so this reports the length and not the step.

Static vs hydrated

Not established — this run never rendered the page, so there is no second reading to compare against.

JSON-LD extracted, unjudged

No application/ld+json block on this page — and no rule can hold that against it.

Shown, never judged: no rule in the catalogue reads jsonLd, and that refusal is deliberate — nothing says which schema a page should carry.

/en/glossary

https://openfinanceguide.com/en/glossary

200 · read from the static HTML — what a crawler that runs no JavaScript sees · en_US

Open Graph — the source cardvendor-spec
Open Banking & PSD2 glossary — Open Finance Guide
title
Open Banking & PSD2 glossary — Open Finance Guide og:title
description
Definitions of PSD2, STET, eIDAS and Open Banking acronyms and concepts. og:description
image
https://openfinanceguide.com/og?title=Glossary&description=Definitions+of+PSD2%2C+STET%2C+eIDAS+and+Open+Banking+acronyms+and+concepts. og:image
size
1.90:1 declared — inside the 1.91:1 band every card is laid out for
fetched
not probed on this run
alt
Open Banking & PSD2 glossary — Open Finance Guide
locale
en_US

The one fully specified surface: 1200×630 recommended, 600×315 floor, 200×200 absolute minimum, 8MB, 1.91:1. Every surface below consumes this image, each in its own way.

developers.facebook.com/docs/sharing/webmasters/images · ogp.me
Google — search resultheuristic
Open Finance Guideopenfinanceguide.com › en › glossary

Open Banking & PSD2 glossary — Open Finance Guide

Definitions of PSD2, STET, eIDAS and Open Banking acronyms and concepts.

Not a card: no image, no ratio. og:title is one of the documented sources for the title link; og:description is not documented as a snippet source anywhere — the snippet comes from the page or from meta description.

Not drawn hereGoogle publishes no character or pixel limit — only truncation “to fit the device width”. The two-line snippet above is the observed desktop shape, not a specification, and the 600px / 155-character figures in circulation are third-party measurements that disagree with each other.

developers.google.com/search/docs/appearance/title-link · /snippet
X — link cardunsourced
Open Banking & PSD2 glossary — Open Finance Guide
Open Banking & PSD2 glossary — Open Finance Guideopenfinanceguide.com

Image, headline over the image, domain. Nothing else. This page declares twitter:card as summary_large_image.

The old card is a lieX removed both headline and description on 4 October 2023. The headline came back in January 2024 as small text over the image; the description never did. Headline-below-image exists only for ads since May 2025. Any tool still drawing three stacked rows is drawing a card that has not existed for years.

X card documentation is not publicly reachable — dated behaviour, not a spec
LinkedIn — post unfurlvendor-spec
Open Banking & PSD2 glossary — Open Finance Guide
Open Banking & PSD2 glossary — Open Finance Guideopenfinanceguide.com

Four tags required — og:title, og:image, og:description, og:url — and a published geometry: 1200×627 minimum, 1.91:1, 5MB. Under 401px wide the card falls back to a thumbnail, which is the only documented layout switch of any surface here.

linkedin.com/help/linkedin/answer/a521928
Slack — unfurlguideline
Open Finance Guide Open Banking & PSD2 glossary — Open Finance Guide

Definitions of PSD2, STET, eIDAS and Open Banking acronyms and concepts.

Open Banking & PSD2 glossary — Open Finance Guide

Slack documents what it reads — Open Graph and X Card metadata — and calls the result “some micro-approximation of the content”. No geometry, no image minimum, no character limit is published. The one hard number: past five links in a message, nothing expands.

docs.slack.dev/messaging/unfurling-links-in-messages
Discord — embedunsourced
Open Finance Guide Open Banking & PSD2 glossary — Open Finance Guide

Definitions of PSD2, STET, eIDAS and Open Banking acronyms and concepts.

Open Banking & PSD2 glossary — Open Finance Guide

Discord publishes nothing about link unfurls: no tag table, no geometry. The accent bar is drawn from a default, since this page declares no theme-color, which is community-reported behaviour and not documented.

Wrong numbers, right documentDiscord's documented 256 / 4096 / 6000 character limits are real, and they govern embeds a bot sends through the API. Using them as unfurl truncation would be a sourcing error of exactly the kind the rigor scale exists to prevent.

no Discord source exists for link previews
WhatsApp — link previewvendor-spec
Open Banking & PSD2 glossary — Open Finance Guide

Definitions of PSD2, STET, eIDAS and Open Banking acronyms and concepts.

openfinanceguide.com
https://openfinanceguide.com/en/glossary

The one messenger with a real spec from Meta: image under 600KB, at least 300px wide, aspect ratio 4:1 or less, title in at most two lines, description in one or two — “80 characters will suffice”. It is also the only surface where a 1200×630 card is more often too heavy than too small.

developers.facebook.com/documentation/business-messaging/whatsapp/link-previews

Findings on the head

  • og.locale.alternates Open Graph and hreflang disagree about this page's translations: no og:locale:alternate for fr, pt-br, es. warning · vendor-spec · expected one og:locale:alternate per hreflang locale other than this page's own
  • og.image.alt.caption og:image:alt repeats the title instead of describing the image. info · guideline · expected an og:image:alt that says something the title does not

This route in 2 languages

pathog:localeog:titlegr.desc.
▸ en en_US Open Banking & PSD2 glossary — Open Finance Guide 49 72
fr fr_FR Glossaire Open Banking & DSP2 — Open Finance Guide 50 72

Lengths are graphemes, which is what a card's size ladder counts. The ladder is the site's own — @goflag/og ships none — so this reports the length and not the step.

Static vs hydrated

Not established — this run never rendered the page, so there is no second reading to compare against.

JSON-LD extracted, unjudged

No application/ld+json block on this page — and no rule can hold that against it.

Shown, never judged: no rule in the catalogue reads jsonLd, and that refusal is deliberate — nothing says which schema a page should carry.

/fr/glossary

https://openfinanceguide.com/fr/glossary

200 · read from the static HTML — what a crawler that runs no JavaScript sees · fr_FR

Open Graph — the source cardvendor-spec
Glossaire Open Banking & DSP2 — Open Finance Guide
title
Glossaire Open Banking & DSP2 — Open Finance Guide og:title
description
Définitions des acronymes et concepts PSD2, STET, eIDAS et Open Banking. og:description
image
https://openfinanceguide.com/og?title=Glossaire&description=D%C3%A9finitions+des+acronymes+et+concepts+PSD2%2C+STET%2C+eIDAS+et+Open+Banking. og:image
size
1.90:1 declared — inside the 1.91:1 band every card is laid out for
fetched
not probed on this run
alt
Glossaire Open Banking & DSP2 — Open Finance Guide
locale
fr_FR

The one fully specified surface: 1200×630 recommended, 600×315 floor, 200×200 absolute minimum, 8MB, 1.91:1. Every surface below consumes this image, each in its own way.

developers.facebook.com/docs/sharing/webmasters/images · ogp.me
Google — search resultheuristic
Open Finance Guideopenfinanceguide.com › fr › glossary

Glossaire Open Banking & DSP2 — Open Finance Guide

Définitions des acronymes et concepts PSD2, STET, eIDAS et Open Banking.

Not a card: no image, no ratio. og:title is one of the documented sources for the title link; og:description is not documented as a snippet source anywhere — the snippet comes from the page or from meta description.

Not drawn hereGoogle publishes no character or pixel limit — only truncation “to fit the device width”. The two-line snippet above is the observed desktop shape, not a specification, and the 600px / 155-character figures in circulation are third-party measurements that disagree with each other.

developers.google.com/search/docs/appearance/title-link · /snippet
X — link cardunsourced
Glossaire Open Banking & DSP2 — Open Finance Guide
Glossaire Open Banking & DSP2 — Open Finance Guideopenfinanceguide.com

Image, headline over the image, domain. Nothing else. This page declares twitter:card as summary_large_image.

The old card is a lieX removed both headline and description on 4 October 2023. The headline came back in January 2024 as small text over the image; the description never did. Headline-below-image exists only for ads since May 2025. Any tool still drawing three stacked rows is drawing a card that has not existed for years.

X card documentation is not publicly reachable — dated behaviour, not a spec
LinkedIn — post unfurlvendor-spec
Glossaire Open Banking & DSP2 — Open Finance Guide
Glossaire Open Banking & DSP2 — Open Finance Guideopenfinanceguide.com

Four tags required — og:title, og:image, og:description, og:url — and a published geometry: 1200×627 minimum, 1.91:1, 5MB. Under 401px wide the card falls back to a thumbnail, which is the only documented layout switch of any surface here.

linkedin.com/help/linkedin/answer/a521928
Slack — unfurlguideline
Open Finance Guide Glossaire Open Banking & DSP2 — Open Finance Guide

Définitions des acronymes et concepts PSD2, STET, eIDAS et Open Banking.

Glossaire Open Banking & DSP2 — Open Finance Guide

Slack documents what it reads — Open Graph and X Card metadata — and calls the result “some micro-approximation of the content”. No geometry, no image minimum, no character limit is published. The one hard number: past five links in a message, nothing expands.

docs.slack.dev/messaging/unfurling-links-in-messages
Discord — embedunsourced
Open Finance Guide Glossaire Open Banking & DSP2 — Open Finance Guide

Définitions des acronymes et concepts PSD2, STET, eIDAS et Open Banking.

Glossaire Open Banking & DSP2 — Open Finance Guide

Discord publishes nothing about link unfurls: no tag table, no geometry. The accent bar is drawn from a default, since this page declares no theme-color, which is community-reported behaviour and not documented.

Wrong numbers, right documentDiscord's documented 256 / 4096 / 6000 character limits are real, and they govern embeds a bot sends through the API. Using them as unfurl truncation would be a sourcing error of exactly the kind the rigor scale exists to prevent.

no Discord source exists for link previews
WhatsApp — link previewvendor-spec
Glossaire Open Banking & DSP2 — Open Finance Guide

Définitions des acronymes et concepts PSD2, STET, eIDAS et Open Banking.

openfinanceguide.com
https://openfinanceguide.com/fr/glossary

The one messenger with a real spec from Meta: image under 600KB, at least 300px wide, aspect ratio 4:1 or less, title in at most two lines, description in one or two — “80 characters will suffice”. It is also the only surface where a 1200×630 card is more often too heavy than too small.

developers.facebook.com/documentation/business-messaging/whatsapp/link-previews

Findings on the head

  • og.locale.alternates Open Graph and hreflang disagree about this page's translations: no og:locale:alternate for en, pt-br, es. warning · vendor-spec · expected one og:locale:alternate per hreflang locale other than this page's own
  • og.image.alt.caption og:image:alt repeats the title instead of describing the image. info · guideline · expected an og:image:alt that says something the title does not

This route in 2 languages

pathog:localeog:titlegr.desc.
en en_US Open Banking & PSD2 glossary — Open Finance Guide 49 72
▸ fr fr_FR Glossaire Open Banking & DSP2 — Open Finance Guide 50 72

Lengths are graphemes, which is what a card's size ladder counts. The ladder is the site's own — @goflag/og ships none — so this reports the length and not the step.

Static vs hydrated

Not established — this run never rendered the page, so there is no second reading to compare against.

JSON-LD extracted, unjudged

No application/ld+json block on this page — and no rule can hold that against it.

Shown, never judged: no rule in the catalogue reads jsonLd, and that refusal is deliberate — nothing says which schema a page should carry.