Cool. But I prefer tinyjpg or tinypng
Show HN: Jpeg.io – Convert any major image format into a highly optimized JPEG
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Re: Show HN: Jpeg.io – Convert any major image format into a highly optimized JPEG
#32Cool. But I prefer tinyjpg or tinypng
Why?
Re: Show HN: Jpeg.io – Convert any major image format into a highly optimized JPEG
#33Did a quick comparison test with this beautiful piece of artwork I just created. original http://i.pi.gy/0K7d.png (2.1 MB) jpeg.io http://i.pi.gy/AP8v.jpg (102 KB) Photoshop 60% jpeg Export http://i.pi.gy/Wr4P.jpg (90 KB) tinypng.com http://i.pi.gy/ndKA.png (74 KB) Note pi.gy does not compress uploads.
I've cropped a section of your comparisons and made one extra one of my own which is using imageoptimise (190KB as was lossless compression) on the original image and scaled that section to 1024px on the long edge, saved them as a lossless tiff and uploaded back to pi.gy which as you said does not compress uploads.
... then I realised that pi.gy must not work properly with tiff's as although it appears to upload them fine, it doesn't give you any links to view the images hahahaha, so I re-exported them as jpeg 100% (i.e. no compression and no loss).
Doing this you can clearly see the differences between the different formats.
- original: http://i.pi.gy/DP55.jpg
- photoshop 60%: http://i.pi.gy/LGmK.jpg
- jpeg.io: http://i.pi.gy/qA3a.jpg
- imageoptimise: http://i.pi.gy/4KOa.jpg
From this, I woud say that while photoshop at 60% (which is very low quality produces a noticeable amount of jpeg compression artifact, it retains image structure and colour depth /significantly/ better than jpeg.io even at such a low quality setting, if you wanted to clean up one an image later, cleaning up the freckled Photoshoppe 60% image would be a lot easier than the very damaged jpeg.io image.
*Edit: Spelling, formatting.
Re: Show HN: Jpeg.io – Convert any major image format into a highly optimized JPEG
#34Cool. When would you want to use JPEG over PNG though? I don't know much about these things (just using PNG/SVG everywhere).
Pretty much everywhere where you're not forced to use PNG. JPEG is significantly smaller and on most devices faster to decode.
It totally depends on the situation, JPEG isn't always smaller, and it's lossy unlike PNG. Flat colour images like logos will be smaller as PNG, and look better too. PNGs also support transparency.
Re: Show HN: Jpeg.io – Convert any major image format into a highly optimized JPEG
#35Really nice tool, but I'm not getting the best results in terms of size optimization so far: http://i.imgur.com/2lfx3P8.png I guess "highly optimized" is a rather ambiguous term. Maybe add a slider for quality compression?
Progressive jpgs increase the size
For anyone else who also didn't know what progressive jpegs are - https://www.wired.com/2013/01/the-return-of-the-progressive-...
Re: Show HN: Jpeg.io – Convert any major image format into a highly optimized JPEG
#36Forgive me, but why on earth would I want to use JPG in the age of PNG?
Re: Show HN: Jpeg.io – Convert any major image format into a highly optimized JPEG
#37Forgive me, but why on earth would I want to use JPG in the age of PNG?
File size is probably the biggest reason.
Re: Show HN: Jpeg.io – Convert any major image format into a highly optimized JPEG
#38Forgive me, but why on earth would I want to use JPG in the age of PNG?
Are you serious? A digital photo translated to PNG is going to be quite large. PNG has it's place, for sure, but it doesn't compress photographs like JPEG does. PNG is great for line art, solid color vector that has been rasterized, etc. JPG is great for photos.
Re: Show HN: Jpeg.io – Convert any major image format into a highly optimized JPEG
#39Did a quick comparison test with this beautiful piece of artwork I just created. original http://i.pi.gy/0K7d.png (2.1 MB) jpeg.io http://i.pi.gy/AP8v.jpg (102 KB) Photoshop 60% jpeg Export http://i.pi.gy/Wr4P.jpg (90 KB) tinypng.com http://i.pi.gy/ndKA.png (74 KB) Note pi.gy does not compress uploads.
I've cropped a section of your comparisons and made one extra one of my own which is using imageoptimise (190KB as was lossless compression) on the original image and scaled that section to 1024px on the long edge, saved them as a lossless tiff and uploaded back to pi.gy which as you said does not compress uploads. ... then I realised that pi.gy must not work properly with tiff's as although it appears to upload them…
> I re-exported them as jpeg 100% (i.e. no compression and no loss)
jpeg is lossy, even at 100%
https://stackoverflow.com/questions/7982409/is-jpeg-lossless...
Re: Show HN: Jpeg.io – Convert any major image format into a highly optimized JPEG
#40Did a quick comparison test with this beautiful piece of artwork I just created. original http://i.pi.gy/0K7d.png (2.1 MB) jpeg.io http://i.pi.gy/AP8v.jpg (102 KB) Photoshop 60% jpeg Export http://i.pi.gy/Wr4P.jpg (90 KB) tinypng.com http://i.pi.gy/ndKA.png (74 KB) Note pi.gy does not compress uploads.
Maybe it's just my computer, but I'm getting very different file sizes (using Firefox's view image info).
original - 200.69 KB (205,510 bytes)
jpeg.io - 163.29 KB (167,212 bytes)
Photoshop - 206.41 KB (211,361 bytes)
tinyping - 190.59 KB (195,160 bytes)
EDIT: pi.gy mentions the following in its FAQ [1]:
Q: Does this service compress images?
A: No, but JPEG's might lose about 0.5% of the quality thanks to CloudFlare. Other than that your image stays just like you uploaded it. But we do strip the comments and GPS details for security & privacy reasons.
[1]: http://pi.gy/