Antonio Macias Posted December 21, 2022 Share Posted December 21, 2022 Hello, good afternoon. I would like how can I reduce the size of an image - document without losing definition-quality? Quote Link to comment Share on other sites More sharing options...
John Rostron Posted December 21, 2022 Share Posted December 21, 2022 Hello @Antonio Macias, and welcome to the forum. You need to use the Document > Resize Document and choose the appropriate algorithm. See the Affinity Help File here: https://affinity.help/photo/en-US.lproj/index.html?page=pages/SizeTransform/imageSize.html?title=Changing image size John Quote Windows 10, Affinity Photo 1.10.5 Designer 1.10.5 and Publisher 1.10.5 (mainly Photo), now ex-Adobe CC CPU: AMD A6-3670. RAM: 16 GB DDR3 @ 666MHz, Graphics: 2047MB NVIDIA GeForce GT 630 Link to comment Share on other sites More sharing options...
NotMyFault Posted December 21, 2022 Share Posted December 21, 2022 49 minutes ago, Antonio Macias said: Hello, good afternoon. I would like how can I reduce the size of an image - document without losing definition-quality? I would say this is next to impossible. Can you be a bit more specific: Do you mean bytes or pixel count by size? What file format is used (e.g. JPEG)? Do you have example images, and a clear description what "size" do intend to achieve? What is the intended usage of the image, e.g. uploading to web-site, printing, sending via chat apps, ...? You can get smaller files (less bytes) by using file formats which support compression (e.g. PNG, TIFF, JPEG). You can resize files to lower resolution and storage - but this always impacts "definition", e.g. level of details visible. Quote Mac mini M1 A2348 | Windows 10 - AMD Ryzen 9 5900x - 32 GB RAM - Nvidia GTX 1080 LG34WK950U-W, calibrated to DCI-P3 with LG Calibration Studio / Spider 5 iPad Air Gen 5 (2022) A2589 Special interest into procedural texture filter, edit alpha channel, RGB/16 and RGB/32 color formats, stacking, finding root causes for misbehaving files, finding creative solutions for unsolvable tasks, finding bugs in Apps. Link to comment Share on other sites More sharing options...
Antonio Macias Posted December 22, 2022 Author Share Posted December 22, 2022 18 hours ago, NotMyFault said: I would say this is next to impossible. Can you be a bit more specific: Do you mean bytes or pixel count by size? What file format is used (e.g. JPEG)? Do you have example images, and a clear description what "size" do intend to achieve? What is the intended usage of the image, e.g. uploading to web-site, printing, sending via chat apps, ...? You can get smaller files (less bytes) by using file formats which support compression (e.g. PNG, TIFF, JPEG). You can resize files to lower resolution and storage - but this always impacts "definition", e.g. level of details visible. HI, good morning We use pixel. jpeg I want to reduce the size of a image of 1000 X 500 px to 500 X 250 px for to use to a web-site. My problem is that the quality of the image is very diferent and pour. Quote Link to comment Share on other sites More sharing options...
Antonio Macias Posted December 22, 2022 Author Share Posted December 22, 2022 18 hours ago, John Rostron said: Hello @Antonio Macias, and welcome to the forum. You need to use the Document > Resize Document and choose the appropriate algorithm. See the Affinity Help File here: https://affinity.help/photo/en-US.lproj/index.html?page=pages/SizeTransform/imageSize.html?title=Changing image size John HI John I tried in that way but always affect to the quality with a small size, thank you John Rostron 1 Quote Link to comment Share on other sites More sharing options...
David in Яuislip Posted December 22, 2022 Share Posted December 22, 2022 Try bicubic resample with a little sharpening Quote Microsoft Windows 11 Home, Intel i7-1360P 2.20 GHz, 32 GB RAM, 1TB SSD, Intel Iris Xe Affinity Photo - 24/05/20, Affinity Publisher - 06/12/20, KTM Superduke - 27/09/10 Link to comment Share on other sites More sharing options...
NotMyFault Posted December 22, 2022 Share Posted December 22, 2022 How do you rate the below image? Actually, I used tone map persona to boost local contrast before resizing with bicubic. The source image looks very flat, not a good starting point for resize which reduces contrast further. Quote Mac mini M1 A2348 | Windows 10 - AMD Ryzen 9 5900x - 32 GB RAM - Nvidia GTX 1080 LG34WK950U-W, calibrated to DCI-P3 with LG Calibration Studio / Spider 5 iPad Air Gen 5 (2022) A2589 Special interest into procedural texture filter, edit alpha channel, RGB/16 and RGB/32 color formats, stacking, finding root causes for misbehaving files, finding creative solutions for unsolvable tasks, finding bugs in Apps. Link to comment Share on other sites More sharing options...
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