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Questions tagged [image-quality]

Questions about the amount of detail and information contained in an image.

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27 votes
9 answers
118k views

Facebook: Ways to preserve image quality of uploaded images?

After uploading an image, Facebook converts it to a new image. Their conversion process introduces artifacts and mottling to the magenta-ish parts of the image. Original image: Facebook's ...
Pilgrim's user avatar
  • 387
9 votes
5 answers
212k views

How can I increase the size of a .jpeg without losing quality?

Is it possible to make a .jpeg photo larger without losing "quality"? I have a photo that is 450px x 750px and would like to make it 3 times bigger for web not print? I've been told that Illustrator ...
Abdo El-Madhoun's user avatar
11 votes
4 answers
280k views

Reduce file size without losing quality

I would like to save files in Photoshop but keep them as small as possible. I use Save for Web (and Devices) and save as a JPEG. Here are the settings I used: I really do not want to lower the ...
L84's user avatar
  • 596
3 votes
1 answer
6k views

Gimp: how to remove background noise/artifacts and enhance handwritten text

I have a lots of scanned handwritten lecture notes (PDFormat) and I want to improve their readability (I have uploaded an example). In particular I'd like to remove the "squares" on the back. I would ...
user119319's user avatar
2 votes
1 answer
1k views

Resize (enlarge) an image without resampling (in favor of quality loss)?

How to resize an image or selection without resampling the pixels? I have some pixel art that I want to enlarge without losing the hard, non-anti-aliased, pixel edges. In other words, 1px should ...
A__'s user avatar
  • 169
10 votes
9 answers
17k views

Techniques to dramatically scale an image

I have been given an impossible task: Take a picture image (jpg) at 1422 x 1067 px with 100 dpi and scale it to 86400 x 29376 px (that's equivalent to 34ft x 100ft or 30.5 meters x 10.36 meters) ...
Hanna's user avatar
  • 10.9k
11 votes
5 answers
73k views

Email signature hell--How to include a logo image and have it stay sharp?

I found a couple useful threads on this forum with respect to the issues posed by (displaying) images in email signatures-- here, for example-- and I've searched all over the web, but still have not ...
nickpish's user avatar
  • 211
8 votes
4 answers
330k views

How can I reduce the file size of a JPEG keeping the same image width and height?

I have a 700Kb JPEG file (white cardboard texture) that I'm using as a background on a website. A file this large takes too long to load for snappy page hits. I don't need the full resolution, a ...
user22476's user avatar
1 vote
4 answers
8k views

What is the best way to create light-weight PNG images?

I want to create light weight PNG images with good quality. Can anyone suggest the best way...Note: Need to use these PNG images in android app designing.
Hariharan Anbazhagan's user avatar
1 vote
3 answers
15k views

How to resize an image without losing quality [duplicate]

I have an image of 90x122 pixels i want to resize it to make it 512x512 pixels but the image loses it quality Is there any way of doing this without losing the quality?.
Taimur's user avatar
  • 11
1 vote
1 answer
161 views

put partly transpared photo on top of panorama

What is it nessesary to do if I want to see just black edges from background image in image placed on top? Here are links to source images This is what I want to create: You can see there are ...
Petr Bečka's user avatar
0 votes
2 answers
3k views

Exporting from SVG to PNG with AI

When exporting an SVG icon to PNG, I am attempting to retain the quality of the image while not loosing the size (16px x 16px). I have made the attempt numerous times but have yet to produce a icon ...
Bgreen's user avatar
  • 1
23 votes
1 answer
18k views

What algorithm do the NoHalo and LoHalo resize methods use in GIMP?

The GIMP resize tool used to have only None, Linear, Cubic/Bicubic, and Lanczos, which are reasonably well documented algorithms that one can do research on, if one is so inclined. I can't find any ...
Matt's user avatar
  • 368
19 votes
2 answers
26k views

How do you export the original image that was inserted in a Sketch document?

I've inserted a few JPEG images for backgrounds into a Sketch document, and now I want to get the full-resolution images out to use on the web. I don't want to export the JPEG into another JPEG, ...
elliottregan's user avatar
4 votes
4 answers
21k views

Will changing image resolution from 300 to 72 without resampling reduce the quality?

This is a rather stupid question so I apologise in advance but I just wanted to be 100% sure! I have a set of photos at 300 ppi that are 800 pixels by 800 pixels and need to convert them in Photoshop ...
deshg's user avatar
  • 143
4 votes
1 answer
6k views

Tools or methods for optimizing favicon appearance?

I often must create a favicon for a fairly complex image, that when it gets down to 16x16, looks weird or blurry. I have been trying with one image, reduced with bicubic-sharp in Photoshop and ...
Damon's user avatar
  • 3,143
3 votes
3 answers
7k views

MacBook retina Photoshop save for web

I am, like so many other graphic designers, very excited about the new MacBook 15" with retina display. But there is one thing that I really am concerned about. With 4 times the pixels as on ordinary ...
Stefan Hans Schonert's user avatar
3 votes
4 answers
21k views

How can we talk about the “resolution” of a JPEG file?

A JPEG is characterised with three parameters: width (pixel), height (pixel) and bit depth (bits per pixel). And resolution is a characteristic for output devices, e.g., monitors or printers. Why? ...
Ivan Gerasimenko's user avatar
2 votes
3 answers
784 views

InDesign: brightness of placed TIF appears to change when PNG is placed

I have placed a greyscale TIF on a spread. When I place another PNG image on the same spread, the brightness of the previously placed graphic appears to change. The graphic appears more bright/less ...
JoSch's user avatar
  • 1,766
2 votes
4 answers
2k views

In printing from digital images, how is PPI converted to DPI?

I know there are 'similar' questions on Stack Exchange and the internet, but none has answered my question. I am not confused between Pixels Per Inch (PPI) of the digital image and Dots Per Inch (DPI) ...
I have many questions's user avatar
2 votes
5 answers
2k views

What is the purpose of the resolution property of images (when creating/editing)?

I want to check something I don't quite understand with the size/quality properties of an image. OK, as much as I understand, the size of an image you create in Photoshop, for example, will determine ...
Nikolay Tsenkov's user avatar
2 votes
1 answer
3k views

Photo distorts terribly on Facebook [duplicate]

I've designed a logo which looks high res in photoshop. But really distorts in Facebook. I understand that Facebook converts the image, but compared to similar logos, it looks bad. Any ways around ...
kadeem's user avatar
  • 21
2 votes
3 answers
23k views

How do I get my vector art to have crisp lines on instagram?

As soon as I upload my art to Instagram, the quality decreases. I have tried everything I can think of. I have used 1080x1080 image resolution, and larger, exported it in many different files (JPG, ...
Robert Brewer's user avatar
1 vote
1 answer
3k views

Skew transform severely distorts screenshot - any workaround?

I'm trying to create the image below where a screen (640px x 960px @ 72ppi) is shown on a stock photo of a device. Is there any way to maintain high quality of the screenshot on the device? I used ...
greener's user avatar
  • 257
1 vote
1 answer
182 views

How to smoothen (curve fitting) this image text in Gimp?

I have this image text which I was able to obtain from a low resolution jpg and then cleaned it out to this point, but now as can be seen in the pic it does not look smooth. I can't find the words I ...
Harry McKenzie's user avatar
1 vote
2 answers
283 views

How to resize QR code from vector graphic without grayish zones?

I'm trying to resize a vector graphic QR code in Gimp but it always creates an additional color in it gray. I want it to be pure black and white with perfect corners like in the original image on the ...
Harry McKenzie's user avatar
1 vote
5 answers
28k views

Resizing/shrinking .JPG files without losing quality?

Im using Gimp to resize images. When using a high res image normally 4500 x 2994 i usually need to shrink this image to 325 x 130 pixels. As you can imagine i loose the shiny, glossy and high res ...
user17936's user avatar
1 vote
2 answers
3k views

Blurry distortion after uploading images to Facebook

Can anyone tell me what is causing the discoloration around the black areas in the red field in this image and how to correct it? It's not showing up in the source file JPG or PNG in the program but ...
Allanah Anderson's user avatar
0 votes
4 answers
5k views

How can I upscale my low resolution to hi-res image [duplicate]

I have a low-res image would anybody explain to me the technique to make it high-res image? It would be really helpful if you could show me how can I improve the resolution, quality or bring out the ...
GlobalLearner's user avatar