{"action":"created","issue":{"url":"https://api.github.com/repos/drewnoakes/metadata-extractor/issues/62","labels_url":"https://api.github.com/repos/drewnoakes/metadata-extractor/issues/62/labels{/name}","comments_url":"https://api.github.com/repos/drewnoakes/metadata-extractor/issues/62/comments","events_url":"https://api.github.com/repos/drewnoakes/metadata-extractor/issues/62/events","html_url":"https://github.com/drewnoakes/metadata-extractor/issues/62","id":51744886,"number":62,"title":"Extract tEXt and iTXt chunk data from PNG files","user":{"login":"drewnoakes","id":350947,"avatar_url":"https://avatars.githubusercontent.com/u/350947?v=3","gravatar_id":"","url":"https://api.github.com/users/drewnoakes","html_url":"https://github.com/drewnoakes","followers_url":"https://api.github.com/users/drewnoakes/followers","following_url":"https://api.github.com/users/drewnoakes/following{/other_user}","gists_url":"https://api.github.com/users/drewnoakes/gists{/gist_id}","starred_url":"https://api.github.com/users/drewnoakes/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/drewnoakes/subscriptions","organizations_url":"https://api.github.com/users/drewnoakes/orgs","repos_url":"https://api.github.com/users/drewnoakes/repos","events_url":"https://api.github.com/users/drewnoakes/events{/privacy}","received_events_url":"https://api.github.com/users/drewnoakes/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/drewnoakes/metadata-extractor/labels/format-png","name":"format-png","color":"207de5"},{"url":"https://api.github.com/repos/drewnoakes/metadata-extractor/labels/image-queue","name":"image-queue","color":"009800"}],"state":"closed","locked":false,"assignee":null,"milestone":null,"comments":4,"created_at":"2014-12-11T22:08:40Z","updated_at":"2015-02-14T00:22:49Z","closed_at":"2015-02-14T00:22:49Z","body":"For example the following image (from #58):\r\n\r\n![image](https://cloud.githubusercontent.com/assets/8988676/5384370/06b81084-80b9-11e4-8b8f-f41785abf652.png)\r\n\r\nmetadata-extractor shows:\r\n\r\n    [PNG] Image Width = 23\r\n    [PNG] Image Height = 25\r\n    [PNG] Bits Per Sample = 8\r\n    [PNG] Color Type = True Color with Alpha\r\n    [PNG] Compression Type = Deflate\r\n    [PNG] Filter Method = Adaptive\r\n    [PNG] Interlace Method = No Interlace\r\n    [PNG] Textual Data = Creation Time: 6/16/09\r\n\r\nExifTool agrees with these values, but also shows:\r\n\r\n    Significant Bits   : 8 8 8 8\r\n    Pixels Per Unit X  : 2800\r\n    Pixels Per Unit Y  : 2800\r\n    Pixel Units        : Meters\r\n    Creation Time      : 6/16/09\r\n    Software           : Adobe Fireworks CS3\r\n    XMP Toolkit        : Adobe XMP Core 4.1-c034 46.272976, Sat Jan 27 2007 22:11:41\r\n    Creator Tool       : Adobe Fireworks CS3\r\n    Create Date        : 2009:06:16 14:57:56Z\r\n    Modify Date        : 2009:06:16 14:58:15Z\r\n\r\nInvestigate where these values are coming from and obtain them."},"comment":{"url":"https://api.github.com/repos/drewnoakes/metadata-extractor/issues/comments/74350567","html_url":"https://github.com/drewnoakes/metadata-extractor/issues/62#issuecomment-74350567","issue_url":"https://api.github.com/repos/drewnoakes/metadata-extractor/issues/62","id":74350567,"user":{"login":"drewnoakes","id":350947,"avatar_url":"https://avatars.githubusercontent.com/u/350947?v=3","gravatar_id":"","url":"https://api.github.com/users/drewnoakes","html_url":"https://github.com/drewnoakes","followers_url":"https://api.github.com/users/drewnoakes/followers","following_url":"https://api.github.com/users/drewnoakes/following{/other_user}","gists_url":"https://api.github.com/users/drewnoakes/gists{/gist_id}","starred_url":"https://api.github.com/users/drewnoakes/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/drewnoakes/subscriptions","organizations_url":"https://api.github.com/users/drewnoakes/orgs","repos_url":"https://api.github.com/users/drewnoakes/repos","events_url":"https://api.github.com/users/drewnoakes/events{/privacy}","received_events_url":"https://api.github.com/users/drewnoakes/received_events","type":"User","site_admin":false},"created_at":"2015-02-14T00:22:49Z","updated_at":"2015-02-14T00:22:49Z","body":"Support for `pHYs` and `sBIT` decoding has been added:\r\n\r\n```none\r\n[PNG-pHYs] Pixels Per Unit X = 2800\r\n[PNG-pHYs] Pixels Per Unit Y = 2800\r\n[PNG-pHYs] Unit Specifier = Metres\r\n[PNG-sBIT] Significant Bits = 8 8 8 8\r\n```\r\n\r\nThat covers off all the unknown data from this image and expands PNG capability in general."}}