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Twitter Cards

Sébastien Merour
publié le 13/06/2020 à 14h04 | modifé le 13/06/2020 à 15h44
Catégorie : Front-EndCommentaires (2698)
Twitter Cards
Description

Par le terme de "Twitter Cards", on entend 2 choses :

-les cards "Twitter" permettant d'afficher un tweet sur Twitter

-les balises "Twitter Cards" insérées dans les balises meta d'un site web, afin que Twitter puisse afficher un tweet correctement

Les Cards "Twitter"

Vous l'aurez remarqué : lorsque vous consultez Twitter, les tweets ne s'affichent pas tous de la même façon. Certains sont de simples textes (phrases courtes...), alors que d'autres tweets sont enrichis de photos, de vidéos...

Concernant les tweets enrichis, on distingue 2 catégories :

-le tweet enrichi depuis Twitter : l'utilisateur poste un tweet en y ajoutant une photo, ou une vidéo. Dans ce type de cas, le tweet ne fait appel à aucun site web extérieur. L'utilisateur insére des photos ou des vidéos qui sont présents sur son device (mobile, PC...)

-le tweet enrichi grâce à un site tiers : dans ce cas, lorsque l'utilisateur poste un lien menant à un site web (par exemple un lien vers un article de presse), Twitter insère automatiquement des éléments pour enrichir le tweet (le plus souvent il s'agit par exemple d'un aperçu photo d'un article de presse posté sur un site web. C'est dans ce cas de figure qu'interviennent les balises meta "Twitter Cards".

Plusieurs types de Twitter Cards existent :

- Summary Card : elle affiche un aperçu du site web de référence. L'aperçu contient le titre ou bien une description du document. On y voit aussi une vignette d'aperçu.

- Summary Card avec image large : c'est la même chose, mais cette fois avec une photo bien plus large qui occupe toute la largeur du fil Twitter.

- Photo Card : La Card ne contient qu'une photo. Le contenu standard du tweet intégre également l'auteur, la source et un lien externe.

- Gallery Card.  Seule différence avec la Photo Card : cette fois, plusieurs photos sont affichées.

- App Card. Elle permet d'afficher une application Android ou iOS. La card contient une courte description (celle présente dans l'App Store), ainsi qu'un lien de téléchargement de l'application.

- Player Card. Comme on peu le deviner, ce type de Card affiche des vidéos ou des fichiers audio.

- Product Card. Elle est destinée à ceux voulant faire la promotion d'un produit. Elle affiche un produit avec 2 caractéristiques définies par l'utilisateur. Il peut s'agir de la catégorie du produit, du prix...

 

Les balises meta "Twitter Cards"

Afin d'afficher correctement des Twitter Cards sur Twitter, il est nécessaire d'ajouter des balises meta Twitter Cards sur le site de référence.

3 balises sont obligatoires :

 

La 1ère balise, "twitter:card" correspond à la description courte du site web

Les 2 autres "twitter:site" et "twitter:creator" correspondent au compte Twitter de l'utilisateur.

A noter : si le site web contient les balises Open Graph suivantes : og:type ; og:title ; og:description sont présentes et si la balise twitter:card est absente, alors le summary sera quand même affiché sur Twitter. Lorsque Twitter crawle le site web, il vérifie si des balises Open Graph sont présentes.

Voici quelques exemples de balises Twitter :

twitter:description

Cette balise doit contenir la description de l'article. Elle ne doit pas dépasser 200 caractères.

twitter:title

Comme son nom l'indique, celle-ci contient le titre. Limitée à 70 caractères.

twitter:image

URL de l'image à insérer dans la card. A noter : l'image doit faire moins de 5 Mo. Les formats supportés sont : JPG, PNG, WEBP et GIF. Dans le cas d'un GIF, seule la première frame est affichée. Le format SVG n'est pas supporté.

twitter:image:alt

Description de l'image. Maximum autorisé : 420 caractères.

twitter:player

URL du player vidéo ou audio.

twitter:player:width

Largeur en pixels du player.

twitter:player:height

Hauteur en pixels du player

A quoi ça sert ?

Les Twitter Cards ont un intérêt évident : plus le tweet est enrichi (présence d'une description, d'une vignette, d'une vidéo...), plus le lien aura des chances d'être cliqué, et ainsi il permettra de générer du traffic sur le site web. Attention cependant : certains éléments comme les vidéos, ne vont pas forcément générer du traffic, car dans le cas des vidéos, l'utilisateur peut se contenter de visionner intégralement la vidéo sur Twitter sans visiter le site web.

Fonctionnalités
SEO / Réseaux Sociaux
Créateur
Twitter
Liens
Aux dernières nouvelles
Rien à signaler.

2698 Commentaire(s)
  1. user
    Charlesjobby
    18/06/2025 à 02h25  commentaire modifé
    Balanset-1A: Advanced Compact Balancer & Vibration Analyzer Industrial-grade Dynamic Balancing Solution Balanset-1A constitutes an groundbreaking solution for vibration correction of rotors in their own bearings, engineered by Estonian company Vibromera OU. The device delivers professional equipment balancing at €1,751, which is substantially less expensive than traditional vibration analyzers while retaining superior measurement accuracy. The system enables on-site balancing directly at the equipment's installation site without requiring removal, which is essential for preventing production downtime. About the Manufacturer Vibromera OU is an Estonian company specializing in the development and manufacturing of instruments for technical diagnostics of industrial equipment. The company is registered in Estonia (registration number 14317077) and has offices in Portugal. Contact Information: Official website: https://vibromera.eu/shop/2/ Technical Specifications Measuring Parameters Balanset-1A provides accurate measurements using a dual-channel vibration analysis system. The device measures RMS vibration velocity in the range of 0-80 mm/s with an accuracy of ±(0.1 + 0.1?Vi) mm/s. The operating frequency range is 5-550 Hz with possible extension to 1000 Hz. The system supports RPM measurement from 250 to 90,000 RPM with phase angle determination accuracy of ±1 degree. Working Principle The device employs phase-sensitive vibration measurement technology with MEMS accelerometers ADXL335 and laser tachometry. Two mono-directional accelerometers measure mechanical vibrations proportional to acceleration, while a laser tachometer generates pulse signals for determining RPM and phase angle. Digital signal processing includes FFT analysis for frequency analysis and custom algorithms for automatic calculation of correction masses. Full Kit Components The standard Balanset-1A delivery includes: Measurement unit with USB interface - primary module with integrated preamplifiers, integrators, and ADC 2 vibration sensors (accelerometers) with 4m cables (alternatively 10m) Optical sensor (laser tachometer) with 50-500mm measuring distance Magnetic stand for sensor mounting Electronic scales for exact measurement of corrective masses Software for Windows 7-11 (32/64-bit) Plastic transport case Complete set of cables and documentation Functional Capabilities Vibrometer Mode Balanset-1A functions as a comprehensive vibration analyzer with abilities for measuring overall vibration level, FFT spectrum analysis up to 1000 Hz, calculating amplitude and phase of the fundamental frequency (1x), and continuous data recording. The system provides display of time signals and spectral analysis for equipment condition diagnostics. Balancing Mode The device supports one-plane (static) and dual-plane (dynamic) balancing with automatic calculation of corrective masses and their installation angles. The unique influence coefficient saving function allows considerable acceleration of subsequent balancing of same-type equipment. A specialized grinding wheel balancing mode uses the three-correction-weight method. Software The intuitive program interface provides step-by-step guidance through the balancing process, making the device usable to personnel without special training. Key functions include: Automatic tolerance calculation per ISO 1940 Polar diagrams for imbalance visualization Result archiving with report generation capability Metric and imperial system support Multilingual interface (English, German, French, Polish, Russian) Fields of Use and Equipment Types Industrial Equipment Balanset-1A is successfully employed for balancing fans (centrifugal, axial), pumps (hydraulic, centrifugal), turbines (steam, gas), centrifuges, compressors, and electric motors. In manufacturing facilities, the device is used for balancing grinding wheels, machine spindles, and drive shafts. Agricultural Machinery The device provides special value for agriculture, where reliable operation during season is critically important. Balanset-1A is used for balancing combine threshing drums, shredders, mulchers, mowers, and augers. The ability to balance on-site without equipment disassembly enables avoiding costly downtime during critical harvest periods. Specialized Equipment The device is effectively used for balancing crushers of various types, turbochargers, drone propellers, and other high-speed equipment. The rotation frequency range from 250 to 90,000 RPM covers practically all types of industrial equipment. Superiority Over Competitors Economic Efficiency At a price of €1,751, Balanset-1A delivers the functionality of devices costing €10,000-25,000. The investment breaks even after preventing just 2-3 bearing failures. Savings on outsourced balancing specialist services totals thousands of euros annually. Ease of Use Unlike complicated vibration analyzers requiring months of training, mastering Balanset-1A takes 3-4 hours. The step-by-step guide in the software permits professional balancing by personnel without specific vibration diagnostics training. Mobility and Independence The complete kit weighs only 4 kg, with power supplied through the laptop's USB port. This enables balancing in remote conditions, at remote sites, and in hard-to-reach locations without separate power supply. Universal Application One device is adequate for balancing the most extensive spectrum of equipment - from small electric motors to large industrial fans and turbines. Support for one and dual-plane balancing covers all typical tasks. Real Application Results Drone Propeller Balancing A user achieved vibration reduction from 0.74 mm/s to 0.014 mm/s - a 50-fold improvement. This demonstrates the exceptional accuracy of the device even on small rotors. Shopping Center Ventilation Systems Engineers effectively balanced radial fans, achieving lower energy consumption, removed excessive noise, and increased equipment lifespan. Energy savings paid for the device cost within several months. Agricultural Equipment Farmers note that Balanset-1A has become an essential tool preventing costly breakdowns during peak season. Reduced vibration of threshing drums led to decreased fuel consumption and bearing wear. Cost and Delivery Terms Current Prices Complete Balanset-1A Kit: €1,751 OEM Kit (without case, stand, and scales): €1,561 Special Offer: €50 discount for newsletter subscribers Bulk Discounts: up to 15% for orders of 4+ units Acquisition Options Official Website: vibromera.eu (recommended) eBay: verified sellers with 100% rating Industrial Distributors: through B2B channels Payment and Shipping Terms Payment Methods: PayPal, bank cards, bank transfer Shipping: 10-20 business days by international mail Shipping Cost: from $10 (economy) to $95 (express) Warranty: manufacturer's warranty Technical Support: included in price Summary Balanset-1A represents an optimal solution for organizations aiming to establish an effective equipment balancing system without major capital expenditure. The device makes accessible access to professional balancing, enabling small businesses and service centers to offer services at the level of large industrial companies. The blend of reasonable price, ease of use, and professional capabilities makes Balanset-1A an vital tool for modern technical maintenance. Investment in this device is an investment in equipment reliability, reduced operating costs, and enhanced competitiveness of your business.

  2. user
    Charlesjobby
    18/06/2025 à 02h20  commentaire modifé
    Balanset-1A: State-of-the-art Portable Balancer & Vibration Analyzer Professional Dynamic Balancing Solution Balanset-1A represents an innovative solution for vibration correction of rotors in their own bearings, created by Estonian company Vibromera OU. The device provides professional equipment balancing at €1,751, which is significantly cheaper than traditional vibration analyzers while preserving superior measurement accuracy. The system allows in-place balancing directly at the equipment's installation site without requiring removal, which is vital for reducing production downtime. About the Manufacturer Vibromera OU is an Estonian company concentrating in the design and manufacturing of instruments for technical diagnostics of industrial equipment. The company is established in Estonia (registration number 14317077) and has branches in Portugal. Contact Information: Official website: https://vibromera.eu/shop/2/ Technical Specifications Measurement Parameters Balanset-1A provides high-precision measurements using a twin-channel vibration analysis system. The device measures RMS vibration velocity in the range of 0-80 mm/s with an accuracy of ±(0.1 + 0.1?Vi) mm/s. The functional frequency range is 5-550 Hz with optional extension to 1000 Hz. The system supports rotation frequency measurement from 250 to 90,000 RPM with phase angle determination accuracy of ±1 degree. Working Principle The device employs phase-sensitive vibration measurement technology with MEMS accelerometers ADXL335 and laser tachometry. Two single-axis accelerometers measure mechanical vibrations proportional to acceleration, while a laser tachometer generates impulse signals for determining rotation frequency and phase angle. Digital signal processing includes FFT analysis for frequency analysis and specialized algorithms for automatic computation of correction masses. Full Kit Package The standard Balanset-1A delivery includes: Measurement unit with USB interface - main module with embedded preamplifiers, integrators, and ADC 2 vibration sensors (accelerometers) with 4m cables (alternatively 10m) Optical sensor (laser tachometer) with 50-500mm measuring distance Magnetic stand for sensor mounting Electronic scales for exact measurement of corrective masses Software for Windows 7-11 (32/64-bit) Plastic transport case Complete set of cables and documentation Performance Capabilities Vibrometer Mode Balanset-1A functions as a complete vibration analyzer with abilities for measuring overall vibration level, FFT spectrum analysis up to 1000 Hz, determining amplitude and phase of the fundamental frequency (1x), and continuous data recording. The system delivers display of time signals and spectral analysis for equipment condition diagnostics. Balancing Mode The device supports single-plane (static) and two-plane (dynamic) balancing with automatic calculation of correction masses and their installation angles. The unique influence coefficient saving function allows significant acceleration of follow-up balancing of identical equipment. A dedicated grinding wheel balancing mode uses the three-correction-weight method. Software The intuitive program interface provides step-by-step guidance through the balancing process, making the device usable to personnel without special training. Key functions include: Automatic tolerance calculation per ISO 1940 Polar diagrams for imbalance visualization Result archiving with report generation capability Metric and imperial system support Multilingual interface (English, German, French, Polish, Russian) Fields of Use and Equipment Types Industrial Equipment Balanset-1A is efficiently employed for balancing fans (centrifugal, axial), pumps (hydraulic, centrifugal), turbines (steam, gas), centrifuges, compressors, and electric motors. In manufacturing facilities, the device is used for balancing grinding wheels, machine spindles, and drive shafts. Agricultural Machinery The device offers special value for agriculture, where continuous operation during season is critically important. Balanset-1A is employed for balancing combine threshing drums, shredders, mulchers, mowers, and augers. The ability to balance on-site without equipment disassembly enables preventing costly downtime during critical harvest periods. Specialized Equipment The device is successfully used for balancing crushers of various types, turbochargers, drone propellers, and other high-speed equipment. The speed frequency range from 250 to 90,000 RPM covers essentially all types of industrial equipment. Superiority Over Competitors Economic Effectiveness At a price of €1,751, Balanset-1A delivers the functionality of devices costing €10,000-25,000. The investment recovers costs after preventing just 2-3 bearing failures. Savings on external balancing specialist services reaches thousands of euros annually. Ease of Use Unlike sophisticated vibration analyzers requiring months of training, mastering Balanset-1A takes 3-4 hours. The step-by-step guide in the software permits professional balancing by personnel without special vibration diagnostics training. Mobility and Independence The complete kit weighs only 4 kg, with power supplied through the laptop's USB port. This allows balancing in outdoor conditions, at distant sites, and in difficult-access locations without separate power supply. Universal Application One device is adequate for balancing the widest spectrum of equipment - from small electric motors to large industrial fans and turbines. Support for one and dual-plane balancing covers all standard tasks. Real Application Results Drone Propeller Balancing A user achieved vibration reduction from 0.74 mm/s to 0.014 mm/s - a 50-fold improvement. This demonstrates the remarkable accuracy of the device even on small rotors. Shopping Center Ventilation Systems Engineers effectively balanced radial fans, achieving decreased energy consumption, removed excessive noise, and increased equipment lifespan. Energy savings recovered the device cost within several months. Agricultural Equipment Farmers note that Balanset-1A has become an essential tool preventing costly breakdowns during peak season. Lower vibration of threshing drums led to decreased fuel consumption and bearing wear. Investment and Delivery Terms Current Prices Complete Balanset-1A Kit: €1,751 OEM Kit (without case, stand, and scales): €1,561 Special Offer: €50 discount for newsletter subscribers Bulk Discounts: up to 15% for orders of 4+ units Ordering Options Official Website: vibromera.eu (recommended) eBay: certified sellers with 100% rating Industrial Distributors: through B2B channels Payment and Shipping Terms Payment Methods: PayPal, bank cards, bank transfer Shipping: 10-20 business days by international mail Shipping Cost: from $10 (economy) to $95 (express) Warranty: factory warranty Technical Support: included in price Conclusion Balanset-1A constitutes an ideal solution for organizations striving to establish an effective equipment balancing system without significant capital expenditure. The device democratizes access to professional balancing, enabling small enterprises and service centers to offer services at the level of large industrial companies. The combination of accessible price, ease of use, and professional features makes Balanset-1A an vital tool for modern technical maintenance. Investment in this device is an investment in equipment stability, lower operating costs, and improved competitiveness of your business.

  3. user
    ThomasDof
    18/06/2025 à 01h37  commentaire modifé
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    18/06/2025 à 01h05  commentaire modifé
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    18/06/2025 à 00h54  commentaire modifé
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