Uploads by Obscure2020
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For Obscure2020 (talk · contributions · Move log · block log · uploads · Abuse filter log)
This special page shows all uploaded files that have not been deleted; for those see the upload log.
| Date | Name | Thumbnail | Size | Description |
|---|---|---|---|---|
| 19:53, 2 August 2024 | UEFI variables on Linux screenshot.png (file) |  |
45 KB | Optimized with OxiPNG and ZopfliPNG. |
| 19:48, 2 August 2024 | Surface UEFI.png (file) |  |
17 KB | The previous version was encoded as RGBA, which unnecessarily inflated the file size, because this image is completely opqaue. I have corrected the image to RGB using OxiPNG and ZopfliPNG. |
| 19:46, 2 August 2024 | UEFI boot process.png (file) |  |
552 KB | Previous version was encoded in 16-bit-depth RGBA, which means 64 bits per pixel. It's possible to represent the same image in 16-bit-depth "Grayscale with Alpha" mode, which means 32 bits per pixel. I performed the transformation using OxiPNG and ZopfliPNG. This new version looks identical, but is a considerably smaller file. |
| 20:07, 1 August 2024 | Icons-flag-cd-2006.png (file) |  |
452 bytes | Optimized with OxiPNG and ZopfliPNG. |
| 20:00, 1 August 2024 | Śmierć ułana Kajetan Stefanowicz.png (file) |  |
6.81 MB | Optimized with OxiPNG and ZopfliPNG to help reduce file size through more intelligent encoding. The image should look the exact same, just compressed more efficiently. |
| 14:44, 1 August 2024 | Windows XP SP2 Boot screen.png (file) |  |
4 KB | This image is composed of only 14 distinct colors. This means I can change the encoding from 24-bits-per-pixel RGB to 4-bits-per-pixel Palette mode. Re-encoding performed with OxiPNG and ZoplfiPNG. |
| 22:30, 31 July 2024 | Caucasian Albania1.png (file) |  |
395 KB | The previous version was encoded as RGBA, which unnecessarily inflated the file size, because this image is completely opqaue. I have corrected the image to RGB with the help of OxiPNG and ZopfliPNG. |
| 20:58, 31 July 2024 | Supermercados Monterey.svg (file) |  |
1 KB | Replaced style attributes with shorter fill attributes. Removed useless polygon end points that were identical to start points. Removed useless polygon points that were colinear with other points. |
| 21:21, 19 July 2024 | DeepSpaceFEC.png (file) |  |
14 KB | Corrected a number of pixels in this image that had their red channel exactly one value brighter than the green or blue channels. Weird error. Anyway, post-correction, the image is now truly grayscale. So I used OxiPNG and ZopfliPNG to change it from 24-bits-per-pixel RGB to 8-bits-per-pixel Grayscale. Hooray for file size savings! |
| 15:43, 18 July 2024 | Current Pakistani Provincial Governments.png (file) |  |
30 KB | The previous version was encoded as 32-bits-per-pixel RGBA. This unnecessarily inflated the size of this file, as not only is this image completely opaque, it also happens to be composed of only 10 distinct colors. This means we can re-encode the image in 4-bits-per-pixel Palette mode. I performed this re-encoding with OxiPNG and ZopfliPNG. This results in massive file size savings while the image still looks the exact same. |
| 23:54, 14 July 2024 | Iran Telephone Codes.png (file) |  |
177 KB | Optimized with OxiPNG and ZopfliPNG. |
| 18:50, 14 July 2024 | Iran-Telephone-Prefix-Map.PNG (file) |  |
26 KB | Normalized crop to 16 pixels of padding on all sides using GIMP. Changed encoding to 4-bits-per-pixel palette mode using OxiPNG and ZopfliPNG, because this image is comprised of only 7 distinct colors. |
| 15:57, 8 July 2024 | PNG transparency demonstration 1.png (file) |  |
219 KB | I went back to the last version by CyberShadow, and then ran that through OxiPNG and then ZopfliPNG. Even better optimization than Avayak or Rhapsody Scarlet managed. |
| 20:04, 30 June 2024 | Velocity and sea surface temperature in the oceans.png (file) |  |
2.17 MB | Previous version was encoded as RGBA, which unnecessarily inflated the file size, because the image is completely opqaue. I have corrected the image to RGB with the help of OxiPNG and ZopfliPNG. |
| 20:00, 30 June 2024 | 4.3 BSD UWisc VAX Emulation f77 Manual.png (file) |  |
5 KB | There are only 132 distinct colors present in the image. This means we can use an 8-bits-per-pixel Palette mode encoding. I performed this transformation using OxiPNG and ZopfliPNG. |
| 19:57, 30 June 2024 | FortranCodingForm.png (file) |  |
1.12 MB | New high-resolution render (NOT a screenshot) of the PDF source. |
| 19:46, 30 June 2024 | JavaScript code.png (file) |  |
58 KB | Previous version was encoded as RGBA, which unnecessarily inflated the file size, because the image is completely opqaue. I have corrected the image to RGB with the help of OxiPNG and ZopfliPNG. |
| 18:47, 24 June 2024 | Alberto 2024 path.png (file) |  |
3.05 MB | Previous version was encoded as RGBA, which unnecessarily inflated the file size, because the image is completely opqaue. I have corrected the image to RGB with the help of OxiPNG. |
| 22:49, 6 June 2024 | Xterm.png (file) |  |
8 KB | Previous version was encoded as RGBA, which was a supremely stupid choice. Not only is this image entirely opaque, it happens to be composed of only four distinct colors. I corrected the encoding to 2-bits-per-pixel Palette mode using OxiPNG and ZopfliPNG. Considerable improvement to file size. |
| 22:25, 6 June 2024 | Axmed Adan Qaybe.png (file) |  |
274 KB | The previous version cropped more than it should have. This version restores the bottom two rows of pixels. The previous two versions of this image were also encoded as RGBA, despite the fact that this image is completely opaque. I have corrected the encoding to RGB, which helps reduce file size. |
| 22:40, 5 June 2024 | Htop.png (file) |  |
7 KB | Previous version was 32-bits-per-pixel RGBA, which was very dumb. This image is both entirely opaque AND actually contains only 11 distinct colors. I used OxiPNG and ZopfliPNG to change the image to 4-bits-per-pixel Palette encoding. |
| 22:38, 5 June 2024 | XtermMenus.png (file) |  |
8 KB | Cropped off pixels outside of the border of the xterm window. Following that, I found that the image contains only 11 distinct colors, so I used OxiPNG and ZopfliPNG to chagne the encoding from RGB to 4-bits-per-pixel Indexed. |
| 22:17, 5 June 2024 | OttomanEmpire1914.png (file) |  |
394 KB | The previous version was encoded as RGBA, which unnecessarily inflated the file size, because the image is completely opqaue. I have corrected the image to RGB with the help of OxiPNG and ZopfliPNG. |
| 21:27, 5 June 2024 | ANSI sample program output.png (file) |  |
80 KB | I used GIMP to crop the excess space off of all four sides. I also used OxiPNG and ZopfliPNG to correct the encoding from RGBA to RGB because this is a completely opaque image. |
| 07:29, 28 May 2024 | Hand Etched PCB.png (file) |  |
13.3 MB | The previous version was encoded as RGBA, which unnecessarily inflated the file size, because the image is completely opqaue. I have corrected the image to RGB with the help of OxiPNG and ZopfliPNG. |
| 07:27, 28 May 2024 | Wire Crossover Symbols for Circuit Diagrams.png (file) |  |
10 KB | There are only 32 distinct colors in this image, so I was able to transform it from 24-bits-per-pixel RGB to 8-bits-per-pixel Palette mode. Transformation performed with OxiPNG and ZopfliPNG. |
| 03:44, 28 May 2024 | Circuit diagram – pictorial and schematic.png (file) |  |
54 KB | Found a high-resolution scan at HathiTrust. I extracted the bitmap from a PDF download of the page. Cropped it with GIMP, then optimized with OxiPNG and ZopfliPNG. |
| 18:13, 26 May 2024 | DIN 69893 hsk 63a drawing.png (file) |  |
16 KB | Reduced border to 20 pixels of padding on all sides. |
| 17:56, 26 May 2024 | Colección de imanes de frigorífico (RPS 28-06-2015).png (file) | .png) |
7.44 MB | Previous version was encoded as RGBA despite the fact it's a completely opaque image. Corrected to RGB using OxiPNG and ZopfliPNG. |
| 22:38, 24 May 2024 | Flowchart of Phases of Parallel Randomized Trial - Modified from CONSORT 2010.png (file) |  |
89 KB | Due to the fact that there are only 8 distinct colors used in this image, I was able to shrink it from 8-bits-per-pixel Palette mode to 4-bits-per-pixel Palette mode. This helps bring filesize down further. Tranformation performed with OxiPNG and ZopfliPNG. |
| 14:55, 23 May 2024 | 2025 IIHF Participants.png (file) |  |
1.12 MB | The previous version was encoded as RGBA, despite the fact that this image is entirely opaque, which unnecessarily inflated the file size. I corrected it to RGB with the help of OxiPNG and ZopfliPNG. |
| 02:17, 18 May 2024 | Pietra d'inciampo Tiziano Pagotto Maniago.png (file) |  |
208 KB | The original version of this file was encoded as RGBA, which was necessary to specify the large transparent area around the relevant piece. Now that we have cropped away all of the transparency, the image has become completely opaque. This version corrects the encoding to RGB, which helps reduce file size even further. |
| 15:12, 16 May 2024 | Pietra Marco Meneghin 1.png (file) |  |
121 KB | The original version of this file was encoded as RGBA, which was necessary to specify the large transparent area around the relevant piece. Now that we have cropped away all of the transparency, the image has become completely opaque. This version corrects the encoding to RGB, which helps reduce file size even further. |
| 03:29, 15 May 2024 | TriBasicExample.png (file) |  |
206 KB | The previous version was encoded as RGBA. That was unnecessary, as this image is entirely opaque. I corrected it to RGB with the help of OxiPNG and ZopfliPNG. |
| 20:48, 11 May 2024 | Hassan Yonis Habane.png (file) |  |
301 KB | I managed to find a slightly better copy online. Had to crop it a bit, but this version has less obvious JPEG artifacting, cuts off less of the original photograph, and is slightly higher-resolution. |
| 22:04, 10 May 2024 | Flag of Indiana (1899–1917).png (file) | .png) |
95 KB | The previous version was encoded as RGBA. That was unnecessary, as this image is entirely opaque. I corrected it to RGB with the help of OxiPNG and ZopfliPNG. |
| 21:52, 10 May 2024 | Fluorescent wear - sputter.png (file) |  |
542 KB | Optimized with OxiPNG and ZopfliPNG. |
| 21:51, 10 May 2024 | Fluorescent Lamp Inverter.png (file) |  |
27 KB | I used GIMP to normalize the crop to 16 pixels of padding on all sides. Then optimized with OxiPNG and ZopfliPNG for good measure. |
| 21:46, 10 May 2024 | Semi resonant start circuit.png (file) |  |
51 KB | After I found a new PDF source for this graphic, I used pdfimages on the command line to extract the bitmap data. Imported that into GIMP, where I rotated straight and cropped it. Then optimized with OxiPNG and ZopfliPNG for good measure. |
| 19:40, 8 May 2024 | Fotothek df n-35 0000065 Facharbeiter für Satztechnik.jpg (file) |  |
690 KB | Better version found at suggested source. Now higher resolution and without watermark. |
| 19:36, 8 May 2024 | Basic256 Mandelbrotalgorithmus (Zoomeffekt).png (file) | .png) |
485 KB | Image contains only 195 distinct colors, so I was able to transform it into palette mode using OxiPNG. Every pixel has shrunk from a 32-bit RGBA value to an 8-bit palette index. |
| 21:48, 7 May 2024 | Colored and monochrome fringes.png (file) |  |
124 KB | The previous version was encoded as RGBA. That was unnecessary, as this image is entirely opaque. I corrected it to RGB with the help of OxiPNG and ZopfliPNG. |
| 21:26, 7 May 2024 | Makroskop (Abraham Lincoln).png (file) | .png) |
18 KB | The previous version was encoded as RGBA (32 bits per pixel). That was quite unnecessary, because every pixel in this image is an opaque shade of gray. Corrected to Grayscale encoding (8 bits per pixel) with the help of OxiPNG and ZopfliPNG. |
| 18:32, 7 May 2024 | Deputy Secretary Sherman Participates in the Spain-U.S. Cybersecurity Seminar (51924416445).png (file) | .png) |
873 KB | Image was encoded as RGBA, despite the fact that it's completely opaque. I have re-encoded it correctly using OxiPNG and ZopfliPNG. |
| 21:46, 6 May 2024 | Add all numbers block.png (file) |  |
29 KB | Optimized with OxiPNG and ZopfliPNG. |
| 20:58, 6 May 2024 | 1947 Nanhai Zhudao.png (file) |  |
3.31 MB | Previous version of this image was encoded in palette mode. However, all of the colors in the palette were shades of gray. So I did away with the palette and just used grayscale mode. This was performed with the help of OxiPNG and ZopfliPNG. |
| 15:01, 20 April 2024 | Bitonal extraction from PDF - TIF vs JPG.png (file) |  |
16 KB | The previous version of this image was encoded as RGBA, which unnecessarily inflated the file size, because the image is completely opqaue. I have corrected the image to RGB with the help of OxiPNG and ZopfliPNG. |
| 14:59, 20 April 2024 | Human karyotype with bands and sub-bands.png (file) |  |
9.58 MB | The file was previously encoded as RGBA, which unnecessarily inflated the file size, because the image is completely opqaue. I have corrected the image to RGB with the help of OxiPNG. |
| 06:33, 19 April 2024 | NK Logo.png (file) |  |
5 KB | The previous version was encoded by stupid software. Palette mode stores a list of up to 256 colors at the start of the file, and each pixel in the image becomes an 8-bit (or smaller) index into that list. There are 33 distinct colors used in this image, making palette mode a wise choice. For some reason, the previous version unnecessarily stored 256 colors in the palette, padding the color table with a whole bunch of unused shades of grey. This is DUMB dumb. This version only stores the 33 c... |
| 21:11, 9 April 2024 | S band angel 1959.png (file) |  |
663 KB | Extracted bitmap from source PDF using pdfimages on the command line. Cropped and converted to PNG using GIMP. Optimized with OxiPNG and ZopfliPNG for good measure. |
