View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0002277 | Scribus | public | 2005-07-22 15:32 | 2024-03-30 17:01 | |
| Reporter | timi | Assigned To | |||
| Priority | normal | Severity | minor | Reproducibility | always |
| Status | new | Resolution | open | ||
| Platform | any | OS | any | OS Version | any |
| Product Version | 1.3 | ||||
| Summary | 0002277: Image compression in PDF | ||||
| Description | Dialog "Save as PDF" / register "General": The UI concerning the image compression is a little bit unclear. The word "compression" isn't visible directly. Maybe it would be clearer doing this: - Replace "Method:" by "Compression method:". Add in the tooltip "(loosless)" for ZIP-compression. - Replace "Quality:" by "Quality of JPEG compression:" When "None" is selected as copression method, this label and combo box should be diabled. | ||||
| Tags | discussion | ||||
| Patch | No | ||||
| has duplicate | 0002486 | closed | Change meaning of "Quality" in PDF Export | |
| related to | 0003696 | closed | Tooltip PDF-Export / General / Compression Method: Remove confusing info from tooltip | |
| related to | 0003697 | closed | cbradney | PDF-Export / General / GroupBox "Image Compression method" |
| related to | 0001554 | acknowledged | PDF Creation - image downsampling philosophy | |
| child of | 0002932 | acknowledged | Metabug: PDF Enhancements |
|
|
Furthermore, the tooltip of the combo box shows "Compression levels: ...". But this isn't compression level but the opposite: the quality level! |
|
|
Some suggestions copied from the duplicate 2486: Howard White: In PDF Export, the "quality" option determines the amount of compression applied in certain instances. The tooltip correctly reports that "high" quality == maximum compression. The user who does not read tooltips could be forgiven for thinking that "high" means best quality, i.e. mimimal compression. This meaning of quality appeared in earliest versions of Acrobat Distiller, but was changed a long time ago by Adobe. Perhaps the option also ought to be labelled "Image Quality." mhanski: In scribus 1.3.3, it says "Compression quality" and not "Quality". However, you are right, "Compression quality==maximum" can be easily misunderstood. I think, the label "Compression level" would be more appriopriate. |
|
|
Some parts of this issue are yet solved, others lack. So I try a little summary of what is to do, talking about 1.3.3.1. >> The UI concerning the image compression is a little bit >> unclear. The word "compression" isn't visible directly. >> Maybe it would be clearer doing this: >> >> - Replace "Method:" by "Compression method:". Add in >> the tooltip "(loosless)" for ZIP-compression. This is done yet. What stays is the problem with "Compression quality". This label itself is a contradiction: high compression = little file size. High quality = big file size. >> The tooltip correctly reports that "high" quality >> == maximum compression. The user who does not read >> tooltips could be forgiven for thinking that "high" >> means best quality, i.e. mimimal compression. "High" actually really yet means hight quality! (PDFs made with "high" are much bigger than PDFs made with "low") The question is if we want to ask for "compression level" or for "quality level" (how we do actually). >> This meaning of quality appeared in earliest versions >> of Acrobat Distiller, but was changed a long time ago >> by Adobe. Perhaps the option also ought to be labelled >> "Image Quality." Am I right assuming that you prefer asking for "quality level"? So I propose to do the following changes: 1. Change label "Compression &Quality:" to "Image &Quality Level:" 2. Change the following in the tooltip of the combobox: "Compression quality level for loosy compression methods:" to "Image quality level for loosy compression methods:"; "Note that a quality level does" to "Note that an image quality level does"; "at any given quality level." to "at any given image quality level.". 3. The label "Image &Quality Level:" and the combobox should be disabled when "None" or "Lossless - Zip" are choosen as Compression Method. (In this cases, the image quality level has no effect, and this should be reflected in the UI) With this three points, this issue and the request from issue 0002486 should be resolved. |
|
|
The string "Image Quality level" is quite long. In my proposel I used it because "level" was already present in the existing strings. But perhaps it would be better to use only "Image Quality": shorter and easier: 1. Change label "Compression &Quality:" to "Image &Quality:" 2. Change the following in the tooltip of the combobox: "Compression quality level for loosy compression methods:" to "Image quality for loosy compression methods:"; "Note that a quality level does" to "Note that the image quality does"; "at any given quality level." to "at any given image quality.". 3. The label "Image &Quality:" and the combobox should be disabled when "None" or "Lossless - Zip" are choosen as Compression Method. (In this cases, the image quality has no effect, and this should be reflected in the UI) |
|
|
What stays is the problem with "Compression quality". This label itself is a contradiction: high compression = little file size. High quality = big file size. >> The tooltip correctly reports that "high" quality >> == maximum compression. The user who does not read >> tooltips could be forgiven for thinking that "high" >> means best quality, i.e. mimimal compression. "High" actually really yet means hight quality! (PDFs made with "high" are much bigger than PDFs made with "low") The question is if we want to ask for "compression level" or for "quality level" (how we do actually). Maybe a way to illustrate this better to to the user who hasn't read the tooltip and maybe mistaken by Compression Quality != High Quality is to add another combobox called "Image Quality" that is dependent (and also can affect) the 'Compression Quality' combobox. So for example, if the user chooses Maximum Compression then it reflects immediately in the Image Quality combobox. Or perhapse instead of comboxboxes we move to sliders and have one slider's movement effect the other... raise the compression slider and the quality slider degrades. |
|
|
I like the idea with the sliders. Nevertheless personally I would still prefer what was proposed at https://bugs.scribus.net/view.php?id=2277#c10450 Reasons: 1.) It requieres less coding that additional combo boxes or sliders. It’s just some minor string changes and one enhancement to graying out a widget. Given that this issue is open since 2005, maybe the easiest solution is the best one. 2.) It’s the same way InDesing does. 3.) For image objects, at Properties ? Image ? PDF?Compression you find two similar combo boxes (“Method” and “Quality”) with the same entries and one additional entry (“Global”). I think that these settings should stay similiar to the PDF export dialog, and that’s easier when using combo boxes. |
|
|
Hi, I also think that the wording "Compression Quality" in the pdf export dialog is wrong and should be considered a bug. It implies that you get a low file size with the "Maximum" setting and a high file size with the "Minimum" setting but the opposite is true. This caused quite some confusion for me and a friend of mine who is also using Scribus. Suggestion: 1) Replace the term "Compression Quality" by "Image Quality" or just "Quality". 2) Gray out the Quality drop-down menu when "Compression Method" is "None". Thanks! |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2005-07-22 15:32 | timi | New Issue | |
| 2005-07-22 15:41 | timi | Note Added: 0005658 | |
| 2005-12-22 23:00 |
|
Relationship added | child of 0002932 |
| 2005-12-22 23:00 |
|
Status | new => acknowledged |
| 2006-04-22 09:07 | mhanski | Relationship added | related to 0002486 |
| 2006-04-22 16:05 | mhanski | Relationship deleted | related to 0002486 |
| 2006-04-22 16:05 | mhanski | Relationship added | has duplicate 0002486 |
| 2006-04-22 16:07 | mhanski | Note Added: 0010316 | |
| 2006-04-22 16:09 | mhanski | OS | => any |
| 2006-04-22 16:09 | mhanski | OS Version | => any |
| 2006-04-22 16:09 | mhanski | Platform | => any |
| 2006-04-22 16:09 | mhanski | Product Version | 1.3.0 => 1.3 |
| 2006-04-24 10:14 | timi | Note Added: 0010392 | |
| 2006-04-24 10:37 | mhanski | Relationship added | related to 0003696 |
| 2006-04-24 10:57 | mhanski | Relationship added | related to 0003697 |
| 2006-04-25 10:03 | timi | Note Added: 0010450 | |
| 2016-03-30 22:36 | Kunda | Relationship added | related to 0001554 |
| 2016-03-30 22:37 | Kunda | Patch | => No |
| 2016-03-30 22:37 | Kunda | Category | Usability => PDF |
| 2016-04-01 12:48 | Kunda | Note Added: 0039674 | |
| 2016-04-01 12:48 | Kunda | Tag Attached: discussion | |
| 2016-04-01 12:56 | Kunda | Status | acknowledged => feedback |
| 2016-04-02 18:07 | timi | Note Added: 0039722 | |
| 2016-04-02 18:07 | timi | Status | feedback => new |
| 2024-03-30 17:01 | winxi | Note Added: 0051073 |
