1. [Home](https://www.g2.com/) 2. ... 3. [Document Creation Software](https://www.g2.com/categories/document-creation) 4. [PDF-XChange Editor Discussions](https://www.g2.com/products/pdf-xchange-editor/discuss) [ ![Product Avatar Image](https://images.g2crowd.com/uploads/product/image/large_detail/large_detail_6d6cdae1357e7a4f1632aa67179169d3/pdf-xchange-editor.png "Product Avatar Image") ](/products/pdf-xchange-editor/reviews) [ PDF-XChange Editor ](/products/pdf-xchange-editor/reviews) (148)4.6/5 Our business began in 1997 as ‘Tracker Software Products Ltd’ to develop document management and imaging-related software. These products included TIFF and PDF digital conversion utilities that enabled the conversion of many document formats to TIFF and PDF for subsequent archiving within document management products. These standalone conversion applications quickly proved their worth and we made the decision to concentrate on the development of these utilities for the end-user and third-party software developer markets. During the intervening years we have become a global leader in the PDF software market. Our offices are located in Canada, the U.K., Bulgaria and Ukraine. Our corporate headquarters relocated to Vancouver Island, British Columbia, in 2008. At 2016 we incorporated PDF-XChange Co Ltd in the U.K. to tie together all of our interests worldwide. In the coming months it is our intention to rebrand all of our sales and marketing under this one common brand worldwide. Our vision is to provide dynamic and powerful software for the creation, editing, manipulation and conversion of PDF documents, and our applications can convert a huge range of document formats to and from PDF. Our dedicated team of developers strive continually to improve the quality and functionality of our products. We aim to create applications that are flexible enough to meet the needs of all practitioners from novice users to professional document creators. Our software creates files that conform to the internationally-recognized ISO PDF standard, which means they are compatible with all major PDF document viewers/editors worldwide. Show More * * * ### 75.0 Nps Score Already have PDF-XChange Editor? ### All PDF-XChange Editor Discussions Search Most CommentedMost HelpfulPinned by G2Newest All DiscussionsDiscussions with CommentsPinned by G2Discussions without Comments FilterFilter Filter byExpand/Collapse Sort by Most Commented Most Helpful Pinned by G2 Newest Filter by All Discussions Discussions with Comments Pinned by G2 Discussions without Comments ![Verified User](/assets/icons/anonymous-avatar-purple-4ae1032bdb50ee5682003170c8184aee790d25958bd397abbd384ba52c596a7b.svg "Verified User") G2 Verified User • about 6 years ago More Options - [ # at least one signature requires validating ](/discussions/28639-at-least-one-signature-requires-validating) Não consigo validar a assinatura dum documento assinado digitalmente [ validating signatures ](https://www.g2.com/tags/validating-signatures)[ PDF Editor Software ](https://www.g2.com/tags/pdf-editor-software)[ Document Creation Software ](https://www.g2.com/tags/document-creation-software)[ Document Generation Software ](https://www.g2.com/tags/document-generation-software) * * * \<0\>0\>Upvotes * * * 0 Comments [![linkedin](/assets/social-logos/linkedin-afe65e46604a5bd5105ab9c856116204040b6b3f2b2d42562fc8071ca0c48ca0.svg "linkedin")](https://www.linkedin.com/shareArticle?mini=true&summary=Ask+PDF-XChange+Editor+questions+and+get+answers+from+expert+users+in+our+PDF-XChange+Editor+Discussions+section.&title=PDF-XChange+Editor+Discussions+%7C+G2&url=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fpdf-xchange-editor%2Fdiscuss%3Fpage%3D2) [![twitter](/assets/social-logos/twitter-61aaec80434c71387b8f7326e480592eae71c0a65afd051d66fce9b75a9bf417.svg "twitter")](https://twitter.com/intent/tweet?text=PDF-XChange+Editor+Discussions+%7C+G2&url=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fpdf-xchange-editor%2Fdiscuss%3Fpage%3D2&via=G2dotcom) [![facebook](/assets/social-logos/facebook-350d0b410d6b10debcf893050e803a8633d53561aa42807b087b8daf9be3668f.svg "facebook")](https://www.facebook.com/sharer/sharer.php?u=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fpdf-xchange-editor%2Fdiscuss%3Fpage%3D2) [![gmail](/assets/social-logos/gmail-6db42f21e7c254fae201b112bef0dd15d25223a5cbb32691ce80eab43761eadf.svg "gmail")](https://mail.google.com/mail/?view=cm&fs=1&tf=1&to=&su=PDF-XChange+Editor+Discussions+%7C+G2&body=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fpdf-xchange-editor%2Fdiscuss%3Fpage%3D2%0aAsk+PDF-XChange+Editor+questions+and+get+answers+from+expert+users+in+our+PDF-XChange+Editor+Discussions+section.) 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