Image

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An image (from Latin imago)[1] is a visual representation of any object or view of the world. It is traditionally defined as a representation of a specific object, but it may be a more indescribable representation of a thought, idea or random assortment of color/pixels.


1000 Words

A long-running popular saying that emphasizes simplicity of understanding visual information.[2]


Specifications


Formats

JPG

[3]

GIF

Animated GIF

A single image may, it turns out, be able to hold a lot more than the initial "1000 word" philosophical limitation; namely, by containing multiple images in a single digital image file and looping through the images. This is the concept behind the "Animated GIF", and it has enjoyed widespread use to tell quirky and irrelevant stories in the form of Avatars, signatures and other plain old joke images that get passed around on the web.

PNG

SVG

See section: SVG

WebP

AVIF

[6] [7] [8] [9]


Image Manipulation

Rollovers

Image Rollovers are popular page effects whereby an action occurs after an image is hovered over.


Cropping

A Cropping Tool or function (sometimes also known as a Marquee tool) is a rectangular, circular, or other polygon-shaped selection tool whose purpose is to select an area of content in order to differentiate it from other content. Possibly the best known example of this is the rectangular selection box from a typical Photo editing suite, which can be used to select one part of an image for copying, pasting or croping, while discarding the other parts or leaving them discarded.


Base64

Base64 is a common format for representing raw image data, where the rather than pointing to the file to display it, you instead include all of its Base-64 (BLOB) binary data as a data-uri:



Tools

[14]


Resources

[17] [18] [19] [20] [21]


Tutorials

[22] [23] [24]


Photoshop


GIMP


External Links


References

  1. wikipedia: Image
  2. wikipedia: A picture is worth a thousand words
  3. JPG vs. JPEG -- Are They the Same Thing?: https://www.howtogeek.com/796389/jpg-vs.-jpeg-are-they-the-same-thing/
  4. GIF '87 spec: http://www.w3.org/Graphics/GIF/spec-gif87.txt
  5. Turn Any YouTube Video Into A GIF By Just Adding “GIF” To The URL: http://techcrunch.com/2014/08/16/turn-any-youtube-video-into-a-gif-by-just-adding-gif-to-the-url/
  6. wikipedia: AV1
  7. AVIF has landed: https://jakearchibald.com/2020/avif-has-landed/
  8. How to Use AVIF -- The New Next-Gen Image Compression Format: https://reachlightspeed.com/blog/using-the-new-high-performance-avif-image-format-on-the-web-today/
  9. AVIF for Next-Generation Image Coding: https://netflixtechblog.com/avif-for-next-generation-image-coding-b1d75675fe4
  10. EXIFviewer: http://www.exifviewer.org/
  11. Tools for Managing EXIF Data of your Images: https://www.labnol.org/software/exif-data-editors/14210/ (HINT: Windows Explorer can change several of the fields)
  12. Is there a free program to (batch) change photo file's date to match EXIF?: https://photo.stackexchange.com/questions/27245/is-there-a-free-program-to-batch-change-photo-files-date-to-match-exif/82984
  13. Jhead is a command line driven program for manipulating the non image parts of Exif flavour Jpeg files that most digital cameras produce.: https://www.w3.org/2000/10/swap/pim/jhead/usage.html
  14. Andrew Hedges - Aspect Ratio calculator: https://andrew.hedges.name/experiments/aspect_ratio/
  15. Mozilla rejects WebP image format, Google adds it to Picasa: http://arstechnica.com/open-source/news/2011/05/mozilla-rejects-webp-image-format-google-adds-it-to-picasa.ars
  16. Weppy (WebP)-A new image format as if JPG, GIF, PNG, TIFF weren’t enough: http://ohhmg.com/weppy-webp-a-new-image-format-as-if-jpg-gif-png-tiff-werent-enough/
  17. SnapFrames: https://www.displays4sale.com//StoreModules/SearchResults.aspx?c=Quick-Ship-Snap-Frames&s=Various-Styled-Snap-Frames
  18. Top/Side sliding frames: https://www.posterdisplays4sale.com/StoreModules/SearchResults.aspx?c=Top-Load-Poster-Displays-and-Poster-Frames
  19. Cheap Poster Frames for Bulk Order have Inexpensive Plastic Extrusion Framing: https://www.allposterframes.com/C-29042/Cheap-Poster-Frames-Bulk-Order-Inexpensive-Plastic-Extrusion-Framing
  20. 8.5 x 11 Sign Holder for Wall Mount, Holds 2 Signs, Top Insert - Black: https://www.allposterframes.com/P-8122/Poster-Frame-for-Two-2-8-1-2-x-11-Signs?st=Category&sid=29022
  21. 24 x 36 Poster Frame for Wall, Easy Slide Loading, 24mm Profile - Black: https://www.allposterframes.com/P-16072/Poster-Frames-for-24-x-36-Signage-Have-A-Classic-Black-Border?st=Category&sid=29022
  22. wikipedia: Aspect ratio (image)
  23. A beginner's guide to aspect ratio and how to use it to compose stunning images: https://www.canva.com/learn/beginners-guide-aspect-ratio/
  24. How to Know Which Aspect Ratio to Use in Your Photography: https://phlearn.com/magazine/how-to-know-which-aspect-ratio-to-use-in-your-photography/

See Also

Photo | Camera | Multimedia | Animation | Image Recognition | Posting Images (in wikimedia)