Adobe Photoshop pixels to CSS - photoshop

How do I convert Adobe Photoshop points to pixels in CSS?
My font size is 48pt, how does that convert to pixels?
Also, are there tools that help convert photoshop psds into CSS/Html?

You can use points to declare the size of your text in css if you like, there's no need to convert. That way if your photoshop file is set up for 72ppi, you see the same size of font in both photoshop and web.
If you building mobile thou, sizes work differently. Than the best thing is to look for a guide, depending on which devices you're building for.
I believe there isn't a tool to convert photoshop pds into css/html. Although, Zeplin may helps. Zeplin is a tool to easily export assets and make guidelines for projects, but it also helps you create a css file from your screen. https://zeplin.io/ It's really nice!

If your Photoshop document is 72pixels per inch (the standard of the web). 1px = pt.

OSX renders 72 ppi (dpi), windows renders bitmaps at 96 ppi (dpi). Knowing the 72ppi or 96ppi numbers can help you work out what's going on.
Photoshop will alter the Text Point size depending on what the image ppi is set to.
However, with today's high pixel density displays the whole dpi to ppi is something of a fudge. Wikipedia has a good, but dated, article on pixels (screens) vs dots (print)
https://en.wikipedia.org/wiki/Dots_per_inch

Related

In need of a simple script or free online service to crop and reduce multiple images to 1440x810#72dpi

I know the output image size requirement is 1440 pixels by 810 pixels #72 dpi.
Problem incurred lots of software and services lock the 16x9 ratio but do not output a standard size.
I want to beable to have the cutting box to zoom in and the cropped image to always be 1440x810#72dpi.
And a feature to move coping box around in the original image would be a nice feature. I just need a working solution that is free temporarily.
Script requires upload of a high quality image and 16x9 cropping box appears over image to crop features out of image and hitting crop would set the box default to 1440x810 so definite cropping box restriction to stop when maximum threshold of conversion is met to not pixelate the output produced image.
Appreciate all the help I can get. Have a wonderful day.
I am in the process of using my android phone and a public computer hence free online service. Normally I would use my photos hope cs6 version but that is not currently available.
I will continue searching but it's like finding a needle in the haystack.
I am hoping another expert has already knows a solution.

How can I add bleed to a PDF book cover using Photoshop?

I have a book cover sent as a PDF which is according 5x8 dimensions, only that is does not have bleed and I need to add it. I am using Adobe InDesign CC 2015 and Adobe Photoshop CC 2015. How can I make it happen?
Create a document in indesign and place the pdf into the document, centered. The document must have bigger dimensions for the bleed. Then put whatever in the bleed that's necessary.
A better way would be to load the pdf file into Illustrator and add the bleed there. Color matching will be a lot more accurate that way. Especially if the pdf contains any vector artwork like outlined fonts. Make sure you've got the correct fonts installed.
If the pdf only contains bitmap images, you could import it into photoshop. Make sure you've created a new document with the needed dimensions and resolution. 300 to 600 dpi would be a good starting point. Usually type will not look clean and sharp when using photoshop since its working on a picture (bitmap). Illustrator or Indesign would make type much cleaner.
If it's possible to get the source files instead, that would be the preferred method. Even if you'd have to redo the artwork would be better to have the original source files/pictures/fonts etc.

How do I shave a few KB off a PDF?

I have a scanned greyscale PDF of a set of official school transcripts that has been compressed to 1MB. Actually, its 1023655 bytes. I am trying to upload the document to an online application that has a maximum file size of 1MB.
My attempts to further compressing the PDF via the same website have not worked.
I have tried using Neevia, but any further compression makes the lightest of the three pages completely white (the first two pages are black printed on a blue background, and third is light grey printed on a white background)
I've tried using mac preview to save as black and white (unreadable), and to resize it (blurry).
I have GIMP at my disposal, but otherwise I don't have any experience with photo or document manipulation. How do I shave those kilobytes off this PDF?
You could try looking at the bit depth of the grey scale. For example, if it's currently 16-bit grey scale (2^16, or 65536 shades of grey), you could try using an 8-bit grey scale (256 shades) or 4-bit (16 shades). You've already tried one form of this, going to 1-bit (2 shades, i. e. black and white), but without first taking a look at adjusting the contrast to make the text really stand out, you'll often end up with illegible files.
If you download and install CutePDF, you can open the PDF file and go to print it, select the CutePDF printer, and you will be prompted to save a new PDF file. Chances are this new PDF file will be much smaller,

Poor image rendering with Google Docs PDF viewer

I used Word 2007 to create a PDF file with an 1526px * 900px image filling a whole page. This is not the first time it's happened, but Google Docs PDF viewer absolutely mangles the colour rendering making it unusable.
I've taken screenshots at the same zoom level in Google Docs viewer and Foxit Reader.
Here's an image for comparison:
It's awful! I've tried messing about with some things, but can't find anything that can correct this issue.
In Chrome you can select "Print" and then "Save as PDF". The image quality in the saved PDF file will go up significantly, compared to the one from "Download as PDF". Google seems to be optimizing images to preserve bandwidth.
Let it be recorded here, 16 months after the present original posting by Turkeyphant and a similar posting [1] on the Docs+Drive product forum, that the problem appears to have been fixed within about the past week. Since that time, when a pdf (or Word) file is opened that resides on the Docs+Drive cloud, the file is rendered with what appears to be proper 24-bit color. The treatment whereby the color was reduced to 5 bits, which could encode 32 colors or 32 shades of gray or 16 of each, depending on the image, has been abandoned.
To the best of my knowledge the Docs+Drive staff have not announced this change, either on their Blog or on their product forum. I noticed the change a few days ago and noted it on the conversation [1].
[1] (2013-05-21) Problem in pdf-viewer with color images
https://productforums.google.com/d/msg/docs/_bdfiYgjF2s/5PDMdp9MhFQJ
It might have something to do with compression of the image in the PDF.
I mean, PDF supports JPEG2000-encoded images (JPXDecode Filter) and PDF Reference states that:
From a single JPEG2000 data stream, multiple versions of an image may
be decoded. These different versions form progressions along four
degrees of freedom: sampling resolution, color depth, band, and
location. For example, with a resolution progression, a thumbnail
version of the image may be decoded from the data, followed by a
sequence of other versions of the image, each with approximately four
times as many samples (twice the width times twice the height) as the
previous one. The last version is the full-resolution image.
Google Docs viewer might be displaying only first version of the image (with lower resolution or lower color depth) thus producing "awful" output.
Perhaps the attached pair of images will help towards clarifying what is happening with color in images that are rendered through the Google Docs pdf viewer. I inserted the Wikipedia image RGB_Color_Solid_Cube (1024*1024 pixels) into an otherwise empty Google Docs text document, converted it to pdf, and viewed the resulting pdf files two ways: once through the Google Docs+Drive pdf viewer and once through the regular pdf viewer of the Chrome or Firefox browser. Then I made screenshots. Here is the RGB Color Cube via the Docs PDF Viewer and here is the RGB Color Cube via a regular browser PDF Viewer.
The color resolution in the Docs PDF Viewer version is really awful; it looks like 64 colors at most. Maybe someone else is able to recognize this kind of rendering and identify the problem better.
This is related to compression and it's something that you can't change in the default view of Google Docs Viewer. The simple solution is to upload the PDF and just serve it from the site in an iFrame. Here is an example:
Problem Embedding Google Docs PDF Solution
Mike

Can we resize a QR-Code?

Does anyone know if we can resize a QR-Code easily by using a proper vector program OR, is the size information contained on that code, hence, we will not be able to resize without changing the code ?
Thanks in advance.
You can resize as much as you want. The information is encoded in the pattern of the data, not in the size of the dots themselves. As long as a scanner can resolve properly between light/dark, the QR code should be readable at any size.
Update 2016: If someone happens to need to upscale a QR code image in some sort of browser/webview - you might get away with a simple CSS property:
img {
image-rendering: pixelated;
}
This way the upscaled image stays sharp.
See a comparison here: http://codepen.io/erkkit/pen/GodxGX
For high resolution (vector image) QR code for printing/publishing:
Get your free QR code
Right-click-and-save OR PrintScreen the QR code
Open/insert it in Photoshop, crop the QR code, and save as *.psd file (default Photoshop format)
Open that *.psd file with Adobe Illustrator – and you get the vector QR code. DONE! :)
Don't just re-size it that will make the edges blurry. You want it to have hard edges like MS-paint or the pencil brush in Photoshop. Open the file in Photoshop and go to IMAGE - RE-SIZE IMAGE and make sure Nearest Neighbor is selecting from the bottom drop down menu before you click OK
You CAN'T, not with the free QR generators. Unless you do some Adobe Illustrator tweaks with Live Trace/Paint afterwards. The abundant free QR generators are a joke when it comes to publishing the QR code you need. Resizing an originally low resolution image (the previous comment) for publishing/printing purposes is the most rediculous statement I've seen in a while. The guy doesn't know what he is talking about.