{
  "tested": "2026-10-24",
  "method": "Pixohub's compress-to-size tool (JPEG, quality search then downscale if needed) run on 20 phone photos (Wikimedia Commons) and the 24-image Kodak suite for each target. 'under' counts outputs at or below the target; med/min/max KB are output sizes; mp_kept is the share of original megapixels kept; ssim is structural similarity to the source.",
  "corpus": {
    "phones": [
      {
        "title": "Barcelos, Vila Boa e Vila Frescainha (São Martinho e São Pedro) - Igreja de Nossa Senhora do Terço 01.jpeg",
        "page": "https://commons.wikimedia.org/wiki/File:Barcelos,_Vila_Boa_e_Vila_Frescainha_(S%C3%A3o_Martinho_e_S%C3%A3o_Pedro)_-_Igreja_de_Nossa_Senhora_do_Ter%C3%A7o_01.jpeg",
        "license": "CC BY-SA 4.0",
        "author": "GiovanniPen",
        "width": 3024,
        "height": 4032
      },
      {
        "title": "Bloki na ulicy Goszczynskiego Sosnowiec Środula 02.jpg",
        "page": "https://commons.wikimedia.org/wiki/File:Bloki_na_ulicy_Goszczynskiego_Sosnowiec_%C5%9Arodula_02.jpg",
        "license": "CC BY-SA 4.0",
        "author": "Krzysztof Popławski",
        "width": 4032,
        "height": 3024
      },
      {
        "title": "Boston Basilica interior 02.jpg",
        "page": "https://commons.wikimedia.org/wiki/File:Boston_Basilica_interior_02.jpg",
        "license": "CC BY-SA 4.0",
        "author": "Farragutful",
        "width": 5425,
        "height": 4063
      },
      {
        "title": "-i---i- (54245759081).jpg",
        "page": "https://commons.wikimedia.org/wiki/File:-i---i-_(54245759081).jpg",
        "license": "CC BY-SA 2.0",
        "author": "メイド理世",
        "width": 3024,
        "height": 4032
      },
      {
        "title": "Carinda Roman Catholic Church 09-08-2024.jpg",
        "page": "https://commons.wikimedia.org/wiki/File:Carinda_Roman_Catholic_Church_09-08-2024.jpg",
        "license": "CC BY-SA 4.0",
        "author": "Mattinbgn",
        "width": 3530,
        "height": 2667
      },
      {
        "title": "China Merchants Bank Building in Shanghai at night 02.jpg",
        "page": "https://commons.wikimedia.org/wiki/File:China_Merchants_Bank_Building_in_Shanghai_at_night_02.jpg",
        "license": "CC BY-SA 4.0",
        "author": "北纬的星空",
        "width": 3024,
        "height": 4032
      },
      {
        "title": "8787 Georgia Avenue 09.jpg",
        "page": "https://commons.wikimedia.org/wiki/File:8787_Georgia_Avenue_09.jpg",
        "license": "CC BY-SA 4.0",
        "author": "Farragutful",
        "width": 5074,
        "height": 3781
      },
      {
        "title": "-i---i- (51970200648).jpg",
        "page": "https://commons.wikimedia.org/wiki/File:-i---i-_(51970200648).jpg",
        "license": "CC BY 2.0",
        "author": "Carlos Pacheco from Toronto, Canada",
        "width": 4032,
        "height": 3024
      },
      {
        "title": "20230807 145136 August 2023 in Białystok.jpg",
        "page": "https://commons.wikimedia.org/wiki/File:20230807_145136_August_2023_in_Bia%C5%82ystok.jpg",
        "license": "CC0",
        "author": "Rakoon",
        "width": 3024,
        "height": 4032
      },
      {
        "title": "'One Old Road' (1 Old Road) with windows and a high brick wall, viewed from Old Road in Chatham, Kent.jpg",
        "page": "https://commons.wikimedia.org/wiki/File:%27One_Old_Road%27_(1_Old_Road)_with_windows_and_a_high_brick_wall,_viewed_from_Old_Road_in_Chatham,_Kent.jpg",
        "license": "CC BY-SA 4.0",
        "author": "OathOn",
        "width": 4588,
        "height": 3347
      },
      {
        "title": "Moscow 2025-11-20 05.jpg",
        "page": "https://commons.wikimedia.org/wiki/File:Moscow_2025-11-20_05.jpg",
        "license": "CC0",
        "author": "Perituss",
        "width": 8064,
        "height": 6048
      },
      {
        "title": "Parks Mall at Arlington Atrium (2024).jpg",
        "page": "https://commons.wikimedia.org/wiki/File:Parks_Mall_at_Arlington_Atrium_(2024).jpg",
        "license": "CC BY 4.0",
        "author": "Chew",
        "width": 5712,
        "height": 4284
      },
      {
        "title": "BorNE.DOMB-LEPA.v-02.jpg",
        "page": "https://commons.wikimedia.org/wiki/File:BorNE.DOMB-LEPA.v-02.jpg",
        "license": "CC BY-SA 4.0",
        "author": "Clwacker",
        "width": 2268,
        "height": 4032
      },
      {
        "title": "20230806 191612 August 2023 in Białystok.jpg",
        "page": "https://commons.wikimedia.org/wiki/File:20230806_191612_August_2023_in_Bia%C5%82ystok.jpg",
        "license": "CC0",
        "author": "Rakoon",
        "width": 4032,
        "height": 3024
      },
      {
        "title": "Caltabellotta - Chiesa di San Pellegrino - 2025-08-29 ruins.JPG",
        "page": "https://commons.wikimedia.org/wiki/File:Caltabellotta_-_Chiesa_di_San_Pellegrino_-_2025-08-29_ruins.JPG",
        "license": "CC BY-SA 4.0",
        "author": "GiovanniPen",
        "width": 4032,
        "height": 3024
      },
      {
        "title": "Operação Lais de Guia GLO 2023 (53316687826).jpg",
        "page": "https://commons.wikimedia.org/wiki/File:Opera%C3%A7%C3%A3o_Lais_de_Guia_GLO_2023_(53316687826).jpg",
        "license": "CC BY-SA 2.0",
        "author": "Marinha do Brasil",
        "width": 4032,
        "height": 3024
      },
      {
        "title": "Aulangon näkötorni heinäkuussa 2023.jpg",
        "page": "https://commons.wikimedia.org/wiki/File:Aulangon_n%C3%A4k%C3%B6torni_hein%C3%A4kuussa_2023.jpg",
        "license": "CC BY-SA 4.0",
        "author": "Jukka Aminoff",
        "width": 2268,
        "height": 4032
      },
      {
        "title": "Buca metrosu temel atma töreni 02.jpg",
        "page": "https://commons.wikimedia.org/wiki/File:Buca_metrosu_temel_atma_t%C3%B6reni_02.jpg",
        "license": "CC BY-SA 4.0",
        "author": "BSRF",
        "width": 4032,
        "height": 3024
      },
      {
        "title": "39 Harleyford Road.jpg",
        "page": "https://commons.wikimedia.org/wiki/File:39_Harleyford_Road.jpg",
        "license": "CC BY-SA 4.0",
        "author": "Secretlondon",
        "width": 3024,
        "height": 4032
      },
      {
        "title": "Atlas apartment high-rise (Vuotie 47 B, Vuosaari, Helsinki, Finland) Mar 28, 2026.jpg",
        "page": "https://commons.wikimedia.org/wiki/File:Atlas_apartment_high-rise_(Vuotie_47_B,_Vuosaari,_Helsinki,_Finland)_Mar_28,_2026.jpg",
        "license": "CC BY 4.0",
        "author": "Lasse Keskinen",
        "width": 3731,
        "height": 6636
      }
    ],
    "kodak": {
      "name": "Kodak Lossless True Color Image Suite",
      "count": 24,
      "width": 768,
      "height": 512,
      "url": "https://r0k.us/graphics/kodak/"
    }
  },
  "targets": [
    {
      "target_kb": 10,
      "phone_photos": {
        "n": 20,
        "under_target": 20,
        "median_kb": 9.9,
        "min_kb": 9.8,
        "max_kb": 10,
        "median_width": 270,
        "median_mp_kept": 0.0052,
        "median_ssim": 0.572,
        "median_ms": 2414
      },
      "kodak": {
        "n": 24,
        "under_target": 24,
        "median_kb": 9.9,
        "min_kb": 9.8,
        "max_kb": 10,
        "median_width": 304,
        "median_mp_kept": 0.185,
        "median_ssim": 0.747,
        "median_ms": 956
      },
      "tool": "https://pixohub.com/compress-image-to-10kb"
    },
    {
      "target_kb": 20,
      "phone_photos": {
        "n": 20,
        "under_target": 20,
        "median_kb": 19.8,
        "min_kb": 19.6,
        "max_kb": 20,
        "median_width": 406.5,
        "median_mp_kept": 0.0116,
        "median_ssim": 0.653,
        "median_ms": 2458
      },
      "kodak": {
        "n": 24,
        "under_target": 24,
        "median_kb": 19.9,
        "min_kb": 19.7,
        "max_kb": 20,
        "median_width": 459.5,
        "median_mp_kept": 0.427,
        "median_ssim": 0.841,
        "median_ms": 951
      },
      "tool": "https://pixohub.com/compress-image-to-20kb"
    },
    {
      "target_kb": 25,
      "phone_photos": {
        "n": 20,
        "under_target": 20,
        "median_kb": 24.9,
        "min_kb": 24.6,
        "max_kb": 25,
        "median_width": 464.5,
        "median_mp_kept": 0.0146,
        "median_ssim": 0.684,
        "median_ms": 2344
      },
      "kodak": {
        "n": 24,
        "under_target": 24,
        "median_kb": 24.8,
        "min_kb": 24.6,
        "max_kb": 25,
        "median_width": 513.5,
        "median_mp_kept": 0.5427,
        "median_ssim": 0.865,
        "median_ms": 955
      },
      "tool": "https://pixohub.com/compress-image-to-25kb"
    },
    {
      "target_kb": 30,
      "phone_photos": {
        "n": 20,
        "under_target": 20,
        "median_kb": 29.7,
        "min_kb": 29.4,
        "max_kb": 30,
        "median_width": 511,
        "median_mp_kept": 0.0176,
        "median_ssim": 0.71,
        "median_ms": 2304
      },
      "kodak": {
        "n": 24,
        "under_target": 24,
        "median_kb": 29.8,
        "min_kb": 29.5,
        "max_kb": 30,
        "median_width": 562.5,
        "median_mp_kept": 0.7007,
        "median_ssim": 0.883,
        "median_ms": 946
      },
      "tool": "https://pixohub.com/compress-image-to-30kb"
    },
    {
      "target_kb": 40,
      "phone_photos": {
        "n": 20,
        "under_target": 20,
        "median_kb": 39.7,
        "min_kb": 39.3,
        "max_kb": 40,
        "median_width": 594,
        "median_mp_kept": 0.024,
        "median_ssim": 0.75,
        "median_ms": 2336
      },
      "kodak": {
        "n": 24,
        "under_target": 24,
        "median_kb": 39.7,
        "min_kb": 39.4,
        "max_kb": 40,
        "median_width": 650,
        "median_mp_kept": 0.9051,
        "median_ssim": 0.911,
        "median_ms": 946
      },
      "tool": "https://pixohub.com/compress-image-to-40kb"
    },
    {
      "target_kb": 50,
      "phone_photos": {
        "n": 20,
        "under_target": 20,
        "median_kb": 49.6,
        "min_kb": 49.2,
        "max_kb": 50,
        "median_width": 668.5,
        "median_mp_kept": 0.0303,
        "median_ssim": 0.783,
        "median_ms": 2344
      },
      "kodak": {
        "n": 24,
        "under_target": 24,
        "median_kb": 49.5,
        "min_kb": 48.3,
        "max_kb": 50,
        "median_width": 729.5,
        "median_mp_kept": 1,
        "median_ssim": 0.93,
        "median_ms": 953
      },
      "tool": "https://pixohub.com/compress-image-to-50kb"
    },
    {
      "target_kb": 75,
      "phone_photos": {
        "n": 20,
        "under_target": 20,
        "median_kb": 74.1,
        "min_kb": 73.4,
        "max_kb": 74.9,
        "median_width": 834,
        "median_mp_kept": 0.047,
        "median_ssim": 0.841,
        "median_ms": 2408
      },
      "kodak": {
        "n": 24,
        "under_target": 24,
        "median_kb": 73.9,
        "min_kb": 71,
        "max_kb": 74.9,
        "median_width": 768,
        "median_mp_kept": 1,
        "median_ssim": 0.954,
        "median_ms": 954
      },
      "tool": "https://pixohub.com/compress-image-to-75kb"
    },
    {
      "target_kb": 100,
      "phone_photos": {
        "n": 20,
        "under_target": 20,
        "median_kb": 99.1,
        "min_kb": 98.3,
        "max_kb": 99.9,
        "median_width": 978,
        "median_mp_kept": 0.0635,
        "median_ssim": 0.88,
        "median_ms": 2379
      },
      "kodak": {
        "n": 24,
        "under_target": 24,
        "median_kb": 98.2,
        "min_kb": 93.9,
        "max_kb": 99.9,
        "median_width": 768,
        "median_mp_kept": 1,
        "median_ssim": 0.968,
        "median_ms": 950
      },
      "tool": "https://pixohub.com/compress-image-to-100kb"
    },
    {
      "target_kb": 120,
      "phone_photos": {
        "n": 20,
        "under_target": 20,
        "median_kb": 119.2,
        "min_kb": 118,
        "max_kb": 119.9,
        "median_width": 1078.5,
        "median_mp_kept": 0.0769,
        "median_ssim": 0.901,
        "median_ms": 2402
      },
      "kodak": {
        "n": 24,
        "under_target": 24,
        "median_kb": 116.6,
        "min_kb": 111.4,
        "max_kb": 119.6,
        "median_width": 768,
        "median_mp_kept": 1,
        "median_ssim": 0.976,
        "median_ms": 956
      },
      "tool": "https://pixohub.com/compress-image-to-120kb"
    },
    {
      "target_kb": 150,
      "phone_photos": {
        "n": 20,
        "under_target": 20,
        "median_kb": 148.9,
        "min_kb": 146.9,
        "max_kb": 149.8,
        "median_width": 1220,
        "median_mp_kept": 0.0977,
        "median_ssim": 0.925,
        "median_ms": 2439
      },
      "kodak": {
        "n": 24,
        "under_target": 24,
        "median_kb": 143.9,
        "min_kb": 115.3,
        "max_kb": 149,
        "median_width": 768,
        "median_mp_kept": 1,
        "median_ssim": 0.983,
        "median_ms": 957
      },
      "tool": "https://pixohub.com/compress-image-to-150kb"
    },
    {
      "target_kb": 200,
      "phone_photos": {
        "n": 20,
        "under_target": 20,
        "median_kb": 198.4,
        "min_kb": 196.5,
        "max_kb": 199.8,
        "median_width": 1422.5,
        "median_mp_kept": 0.1336,
        "median_ssim": 0.95,
        "median_ms": 2566
      },
      "kodak": {
        "n": 24,
        "under_target": 24,
        "median_kb": 155.9,
        "min_kb": 115.3,
        "max_kb": 199.4,
        "median_width": 768,
        "median_mp_kept": 1,
        "median_ssim": 0.986,
        "median_ms": 948
      },
      "tool": "https://pixohub.com/compress-image-to-200kb"
    },
    {
      "target_kb": 250,
      "phone_photos": {
        "n": 20,
        "under_target": 20,
        "median_kb": 248.7,
        "min_kb": 246.4,
        "max_kb": 249.9,
        "median_width": 1608.5,
        "median_mp_kept": 0.1683,
        "median_ssim": 0.967,
        "median_ms": 2680
      },
      "kodak": {
        "n": 24,
        "under_target": 24,
        "median_kb": 155.9,
        "min_kb": 115.3,
        "max_kb": 246.7,
        "median_width": 768,
        "median_mp_kept": 1,
        "median_ssim": 0.987,
        "median_ms": 944
      },
      "tool": "https://pixohub.com/compress-image-to-250kb"
    },
    {
      "target_kb": 300,
      "phone_photos": {
        "n": 20,
        "under_target": 20,
        "median_kb": 298,
        "min_kb": 295.6,
        "max_kb": 299.9,
        "median_width": 1777.5,
        "median_mp_kept": 0.2019,
        "median_ssim": 0.975,
        "median_ms": 2776
      },
      "kodak": {
        "n": 24,
        "under_target": 24,
        "median_kb": 155.9,
        "min_kb": 115.3,
        "max_kb": 246.7,
        "median_width": 768,
        "median_mp_kept": 1,
        "median_ssim": 0.987,
        "median_ms": 947
      },
      "tool": "https://pixohub.com/compress-image-to-300kb"
    },
    {
      "target_kb": 400,
      "phone_photos": {
        "n": 20,
        "under_target": 20,
        "median_kb": 398.2,
        "min_kb": 390.9,
        "max_kb": 399.8,
        "median_width": 2103,
        "median_mp_kept": 0.2699,
        "median_ssim": 0.984,
        "median_ms": 2838
      },
      "kodak": {
        "n": 24,
        "under_target": 24,
        "median_kb": 155.9,
        "min_kb": 115.3,
        "max_kb": 246.7,
        "median_width": 768,
        "median_mp_kept": 1,
        "median_ssim": 0.987,
        "median_ms": 972
      },
      "tool": "https://pixohub.com/compress-image-to-400kb"
    },
    {
      "target_kb": 500,
      "phone_photos": {
        "n": 20,
        "under_target": 20,
        "median_kb": 495.6,
        "min_kb": 485.1,
        "max_kb": 499.9,
        "median_width": 2360,
        "median_mp_kept": 0.3792,
        "median_ssim": 0.988,
        "median_ms": 2904
      },
      "kodak": {
        "n": 24,
        "under_target": 24,
        "median_kb": 155.9,
        "min_kb": 115.3,
        "max_kb": 246.7,
        "median_width": 768,
        "median_mp_kept": 1,
        "median_ssim": 0.987,
        "median_ms": 962
      },
      "tool": "https://pixohub.com/compress-image-to-500kb"
    },
    {
      "target_kb": 600,
      "phone_photos": {
        "n": 20,
        "under_target": 20,
        "median_kb": 596.5,
        "min_kb": 590,
        "max_kb": 599.7,
        "median_width": 2585,
        "median_mp_kept": 0.4565,
        "median_ssim": 0.99,
        "median_ms": 2792
      },
      "kodak": {
        "n": 24,
        "under_target": 24,
        "median_kb": 155.9,
        "min_kb": 115.3,
        "max_kb": 246.7,
        "median_width": 768,
        "median_mp_kept": 1,
        "median_ssim": 0.987,
        "median_ms": 970
      },
      "tool": "https://pixohub.com/compress-image-to-600kb"
    },
    {
      "target_kb": 750,
      "phone_photos": {
        "n": 20,
        "under_target": 20,
        "median_kb": 742,
        "min_kb": 715.4,
        "max_kb": 749.1,
        "median_width": 2899.5,
        "median_mp_kept": 0.5705,
        "median_ssim": 0.992,
        "median_ms": 2796
      },
      "kodak": {
        "n": 24,
        "under_target": 24,
        "median_kb": 155.9,
        "min_kb": 115.3,
        "max_kb": 246.7,
        "median_width": 768,
        "median_mp_kept": 1,
        "median_ssim": 0.987,
        "median_ms": 972
      },
      "tool": "https://pixohub.com/compress-image-to-750kb"
    },
    {
      "target_kb": 800,
      "phone_photos": {
        "n": 20,
        "under_target": 20,
        "median_kb": 794.6,
        "min_kb": 776.4,
        "max_kb": 799.9,
        "median_width": 3024,
        "median_mp_kept": 0.6085,
        "median_ssim": 0.993,
        "median_ms": 2713
      },
      "kodak": {
        "n": 24,
        "under_target": 24,
        "median_kb": 155.9,
        "min_kb": 115.3,
        "max_kb": 246.7,
        "median_width": 768,
        "median_mp_kept": 1,
        "median_ssim": 0.987,
        "median_ms": 953
      },
      "tool": "https://pixohub.com/compress-image-to-800kb"
    },
    {
      "target_kb": 1024,
      "phone_photos": {
        "n": 20,
        "under_target": 20,
        "median_kb": 993.7,
        "min_kb": 907.2,
        "max_kb": 999.7,
        "median_width": 3166.5,
        "median_mp_kept": 0.7145,
        "median_ssim": 0.994,
        "median_ms": 2497
      },
      "kodak": {
        "n": 24,
        "under_target": 24,
        "median_kb": 155.9,
        "min_kb": 115.3,
        "max_kb": 246.7,
        "median_width": 768,
        "median_mp_kept": 1,
        "median_ssim": 0.987,
        "median_ms": 966
      },
      "tool": "https://pixohub.com/compress-image-to-1mb"
    },
    {
      "target_kb": 1536,
      "phone_photos": {
        "n": 20,
        "under_target": 20,
        "median_kb": 1483.8,
        "min_kb": 1383.5,
        "max_kb": 1495.9,
        "median_width": 3804.5,
        "median_mp_kept": 1,
        "median_ssim": 0.997,
        "median_ms": 2345
      },
      "kodak": {
        "n": 24,
        "under_target": 24,
        "median_kb": 155.9,
        "min_kb": 115.3,
        "max_kb": 246.7,
        "median_width": 768,
        "median_mp_kept": 1,
        "median_ssim": 0.987,
        "median_ms": 956
      },
      "tool": "https://pixohub.com/compress-image-to-1-5mb"
    },
    {
      "target_kb": 2048,
      "phone_photos": {
        "n": 20,
        "under_target": 20,
        "median_kb": 1974.6,
        "min_kb": 1383.5,
        "max_kb": 1996.6,
        "median_width": 4032,
        "median_mp_kept": 1,
        "median_ssim": 0.998,
        "median_ms": 2181
      },
      "kodak": {
        "n": 24,
        "under_target": 24,
        "median_kb": 155.9,
        "min_kb": 115.3,
        "max_kb": 246.7,
        "median_width": 768,
        "median_mp_kept": 1,
        "median_ssim": 0.987,
        "median_ms": 962
      },
      "tool": "https://pixohub.com/compress-image-to-2mb"
    },
    {
      "target_kb": 3072,
      "phone_photos": {
        "n": 20,
        "under_target": 20,
        "median_kb": 2904.9,
        "min_kb": 1383.5,
        "max_kb": 2998,
        "median_width": 4032,
        "median_mp_kept": 1,
        "median_ssim": 0.999,
        "median_ms": 2228
      },
      "kodak": {
        "n": 24,
        "under_target": 24,
        "median_kb": 155.9,
        "min_kb": 115.3,
        "max_kb": 246.7,
        "median_width": 768,
        "median_mp_kept": 1,
        "median_ssim": 0.987,
        "median_ms": 970
      },
      "tool": "https://pixohub.com/compress-image-to-3mb"
    },
    {
      "target_kb": 5120,
      "phone_photos": {
        "n": 20,
        "under_target": 20,
        "median_kb": 4017.9,
        "min_kb": 1383.5,
        "max_kb": 4996.3,
        "median_width": 4032,
        "median_mp_kept": 1,
        "median_ssim": 1,
        "median_ms": 1716
      },
      "kodak": {
        "n": 24,
        "under_target": 24,
        "median_kb": 155.9,
        "min_kb": 115.3,
        "max_kb": 246.7,
        "median_width": 768,
        "median_mp_kept": 1,
        "median_ssim": 0.987,
        "median_ms": 962
      },
      "tool": "https://pixohub.com/compress-image-to-5mb"
    }
  ]
}