If you’ve been running your own personal website or a blog for a while, you are likely familiar with the og:image and twitter:image meta tags that let you specify an image that will be shown when you or someone else shares a link to your site or an article on social media.

Did you also know that there are accompanying meta tags that let you provide alt text for this image?

That would be og:image:alt and twitter:image:alt.

What is Dithering?

Dithering is a method for trying to make an image look good while reducing the number of colors it uses, or as wikipedia puts it:

Dithering is used in computer graphics to create the illusion of "color depth" in images with a limited color palette - a technique also known as color quantization. In a dithered image, colors that are not available in the palette are approximated by a diffusion of colored pixels from within the available palette. The human eye perceives the diffusion as a mixture of the colors within it (see color vision). Dithered images, particularly those with relatively few colors, can often be distinguished by a characteristic graininess or speckled appearance.

For more information, see this list of dithering resources from around the web: explainers, algorithms, examples, etc.

About this site

Dither it! is built by Alex Harris.

It was inspired by a blog post from Low-tech Magazine about how to reduce the energy usage associated with running websites. One method discussed was to reduce full color images to dithered images with very few colors and subsequently smaller file sizes. Ensuing discussion clarified that there are other, more modern ways to compress images (try Squoosh) which achieve reduced file sizes while maintaining color. Nonetheless, dithering is a fun technique that looks cool and is interesting to learn about.

The Dither it! source code is freely available on the Dither it! Github page. Please feel free to contribute, share or pilfer.

Thanks to Leon Sorokin, for making RgbQuant.js and Don for making vue-color.

Image slider for examples: Img Comparison Slider

Animate picture with AI

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There are many great free and open-source alternatives to closed source and/or paid photo libraries. This project aims to track and compare the feature set between the many different options with a focus on ‘Gratis’ (free as in free beer) open source photo libraries. ‘Libre’ (free as in free speech) projects are also welcome, but will likely need to be submitted via a pull request since the time in testing each different project is significant.

⚠️ Disclaimer: This repository displays both objective and subjective measures of feature quality. The owner of this repository reserves the right to make changes to any pull request.

wordcloud · PyPI

Gallery of Examples — wordcloud documentation

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Aujourd'hui, comment bien optimiser ses images pour pouvoir partager des trucs même si le débit montant de son serveur est à chier.

Si comme moi vous autohébergez votre site, déjà partagez moi l'info (par mail cf la page de contact ou alors par commentaire là où vous avez trouvé ce post), et ensuite vous vous êtes surement retrouvé dans la même situation que moi ; vous voulez partager des photos, mais votre téléphone prends des photos de plusieurs Mo (voire dizaines de Mo), et votre connexion montante à la maison est déplorable (pour rester poli).

Protect your photos and videos with Ente - a secure, cross-platform, open source, encrypted photos app. Automatic backups, end-to-end encryption, collaborative albums, family plans, library-sync, 1-click import, human support, locked photos, live photos, descriptions, private sharing, search and more.

• Self Hosting Ente Help
• ente-io/ente Fully open source, End to End Encrypted alternative to Google Photos and Apple Photos
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PimEyes is an advanced face recognition search engine, a reverse image search tool, and a photo search mechanism used to find which websites publish your photos online.

This document presents various ways of annotating a large image with either text or some other image. The annotation may be bold and highly visible, or subtle and hidden.

Reasons for annotating images are varied, but are usually either to

• Mark the image with information about what the image is about.
• Point out or highlight some aspect of the image.
• Add copyright or logos to the image as a form of copy protection.

Architecture in Music explores the spaces inside some of the world's finest musical instruments.

Photographed using exotic probe lenses and specialist processing techniques these instrumental interiors appear as vast concert halls or contemporary architecture.

Each shot is comprised of dozens to hundreds of individual images, carefully blended to give the illusion of space.

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