{"action":"opened","issue":{"url":"https://api.github.com/repos/mozilla/pdf.js/issues/7278","repository_url":"https://api.github.com/repos/mozilla/pdf.js","labels_url":"https://api.github.com/repos/mozilla/pdf.js/issues/7278/labels{/name}","comments_url":"https://api.github.com/repos/mozilla/pdf.js/issues/7278/comments","events_url":"https://api.github.com/repos/mozilla/pdf.js/issues/7278/events","html_url":"https://github.com/mozilla/pdf.js/issues/7278","id":152594455,"number":7278,"title":"Performance improvements","user":{"login":"leoakino","id":19153824,"avatar_url":"https://avatars.githubusercontent.com/u/19153824?v=3","gravatar_id":"","url":"https://api.github.com/users/leoakino","html_url":"https://github.com/leoakino","followers_url":"https://api.github.com/users/leoakino/followers","following_url":"https://api.github.com/users/leoakino/following{/other_user}","gists_url":"https://api.github.com/users/leoakino/gists{/gist_id}","starred_url":"https://api.github.com/users/leoakino/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/leoakino/subscriptions","organizations_url":"https://api.github.com/users/leoakino/orgs","repos_url":"https://api.github.com/users/leoakino/repos","events_url":"https://api.github.com/users/leoakino/events{/privacy}","received_events_url":"https://api.github.com/users/leoakino/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2016-05-02T16:55:52Z","updated_at":"2016-05-02T16:55:52Z","closed_at":null,"body":"Hello experts!\r\n\r\nI use the PDFJS to display engineering drawings. As I have a very large vectorized file (bigger than 3mb) when i click on the function \"zoomin\" occur a certain performance degradation on renderization (at this moment i can´t work with the hand tool and this is very bad for my end user). \r\n\r\nI wonder if is there  any initiative to improve the rendering response time of PDF files?\r\n\r\nI also would like to acknowledge and thank to the great work you have done with this plugin!\r\n\r\nBest Regards,\r\n\r\nLeonardo Aquino"}}