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Web denizens who regularly run Chrome or Safari are used to seeing PDFs in-browser, but their Firefox-using counterparts have had to settle for either a download or a third-party plugin. With the just-launched Firefox 19, they're on an even playing field: Mozilla's browser now has a built-in PDF viewer to save the hassle. Other updates on the desktop involve more incremental CSS and startup speed tweaks, although Android users do receive theme support, Chinese localizations and lowered minimum hardware requirements. Both Firefox versions and their release notes await at the download links.