photo software

Discussion in 'Digital Darkroom' started by tommarcus, Jul 12, 2020.

  1. trying to join a photography website, that wants people to post 4 jpeg photos, with a size of MAX 500kb.

    WHAT software has the ability to take a 2mb photo and turn it that small? or even a 20mb file?
     
  2. Try JPEGmini the free version permitts 10pictures per day if I recall right.
    Anything suitable for editing images might work too. Picasa has a save for web function. You could save at lowest JPEG quality, downsize, etc.
     
  3. Two things determine the size of the jpeg file size to be uploaded. The first is the number of pixels in the (re-sized) photo. The second is the so-called "jpeg quality". Jpeg works by averaging individual pixels of the same or similar color & tone into blocks. The higher the quality, the smaller the blocks, the higher the resolution and the larger the files (for any given number of pixels).

    There are many free online resizing websites. If you google "resize photo's free"you''ll find some and mobile and desktop apps too.

    Here are a couple of free products. I can't personally vouch for any of them:
    - Xnresize
    - FastStone
    - Freesizer
    - Flexxi
     
    charlie_novice likes this.
  4. Lightroom will do it. I just did a test with a 303mb TIF files, and it worked.
     
    Ed_Ingold likes this.
  5. Irfanview. It's free.
     
  6. thanks for the help. The forum staff cant even bother to reply to a message i sent them.

    just hate thinking how the photos will look
     
  7. Drop the size rather than the quality, or as well as. If you drop the files to around 800 pixels on the long side, you should easily get down to your 500kB limit without losing much quality, at least far as web display is concerned.
     
    mikemorrell likes this.
  8. Lightroom . . . I regularly export files from weddings (shot with D7100 and D750 cameras) with a file size limit of 100K in order for the bride and groom to use them on Facebook and other social media sites.

    But, there are 100 or other products . . .
     
  9. When uploading for photo.net, I resize so that the longest size is 1000 pixels. Then apply a small amount of unsharp mask, which often makes the smaller image look just as sharp as the original. Then save as, when saving as a JPEG reducing the quality from 12 to 11 or 10 usually drops it to below 500K.

    If you try to reduce the JPEG quality to a full size file from a camera or scanner, to get it below 500K you will introduce horrible JPEG artefacts.
     
  10. Irfanview (freeware) or GIMP (open source)

    Both free and both excellent bits of software.

    Why pay more?
     
  11. Good explanation, and FastStone is an excellent choice. It is easy to juggle downsizing the dimensions (with a choice of several algorithms) and selecting the JPG quality level.
     
    mikemorrell likes this.
  12. the quality came out not so lovely, but it was the size they wanted. Still at least up to a week wait to see if they like them. Why some people think photographer needs to do nothing but studio portraits to "prove" they be a photographer.
     
    mikemorrell likes this.
  13. Post 'em up here and we can give advice?
     
    mikemorrell likes this.
  14. Bear in mind that the jpeg file size not only depends on the number of pixels and the jpeg quality level but also on what's in the photo. More specifically: the "complexity of the information" in the photo. Photos with large relatively evenly colored/toned areas (blue sky, calm sea, etc.) and little detail are "low complexity" resulting in a smaller file size at any given jpeg quality level. Contrast this with a busy city street scene full of details or a close-up or a detailed, multi-colored woven pattern. Both are examples of photos that probably have "high complexity" resulting in a larger file size for any given jpeg quality level.

    So, depending on the content of your photos you may be able to increase the quality level (or pixels) and still stay under the 500K limit or you may need to drop down a quality level (or reduce pixels).

    Mike

     
    bgelfand likes this.
  15. Apple's "Preview" program that's pretty deeply baked into the OS is quick and handy for both cropping and resizing. If an image has any room for cropping, I will usually do it first before resizing.

    I'm not sure if Windows has anything similar. It might be possible in Paint or whatever other image editor comes with the OS.

    I love Lightroom and do 95% of my digital original post in it(the rest is either done with Preview or with Photoshop depending if I need lighter or heavier editing abilities). Its real strength to me is in how efficiently I can select keepers, adjust them(not as much as in Photoshop but pretty darn capable), and then easily batch export them including-if desired-to a certain size. Using lightroom or Photoshop to do a simple resize is like using a sledgehammer as a flyswatter, although I have done nothing more than that as part of batch processing.
     
  16. Tony Parsons

    Tony Parsons Norfolk and Good

    H, Tom

    Late as usual - what I use is XnView and FastStone. Do all PP in them, then save image as TIFF, then resize in FastStone and save as RGB JPG file. That's how I've processed 95% of my stuff on here - have a look at some (almost all in No Words forum) and see what you think of quality (can't do anything about ability at this late stage !).
     

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