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2. Pixel density - Wikipedia

   en.wikipedia.org/wiki/Pixel_density

   Even though image manipulation software can optionally set density for some image file formats, not many other software uses density information when displaying images. Web browsers, for example, ignore any density information. As the table shows, support for density information in image file formats varies enormously and should be used with ...

3. List of abbreviations in photography - Wikipedia

   en.wikipedia.org/wiki/List_of_abbreviations_in...

   Exchangeable image file format. A standard format for tag data in digital camera files. [10] f: f-number, f-stop. The numerical value of a lens aperture. The ratio of the focal length of the lens divided by its effective aperture diameter. [4] FF: Full frame, where the image sensor is approximately the same size as a 35 mm film: 36 × 24 mm. FP ...

4. Dots per inch - Wikipedia

   en.wikipedia.org/wiki/Dots_per_inch

   If it is labelled as 250 PPI, that is an instruction to the printer to print it at a size of 4 × 4 inches. Changing the PPI to 100 in an image editing program would tell the printer to print it at a size of 10 × 10 inches. However, changing the PPI value would not change the size of the image in pixels which would still be 1,000 × 1,000.

5. Image editing - Wikipedia

   en.wikipedia.org/wiki/Image_editing

   Image editing encompasses the processes of altering images, whether they are digital photographs, traditional photo-chemical photographs, or illustrations. Traditional analog image editing is known as photo retouching , using tools such as an airbrush to modify photographs or edit illustrations with any traditional art medium .

6. PDF - Wikipedia

   en.wikipedia.org/wiki/PDF

   This is an accepted version of this page This is the latest accepted revision, reviewed on 13 November 2024. Portable Document Format, a digital file format For other uses, see PDF (disambiguation). Portable Document Format Adobe PDF icon Filename extension.pdf Internet media type application/pdf, application/x-pdf application/x-bzpdf application/x-gzpdf Type code PDF (including a single ...

7. List of PDF software - Wikipedia

   en.wikipedia.org/wiki/List_of_PDF_software

   Full feature PDF editor. Poppler-utils: GNU GPL: Yes Yes Unix Yes Converts PDF to other file format (text, images, html). pstoedit: GNU GPL: Yes Yes Unix Yes Converts PostScript to (other) vector graphics file format. QPDF: Apache License 2.0: Yes Yes Yes Structural, content-preserving transformations from PDF to PDF. Scribus: GNU GPL: Yes Yes Yes