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| File extension | |
|---|---|
| File category | Document file |
| Stands for | Portable Document File |
| Developer | Adobe Systems |
| Overview | PDF is a format which stores documents that can include text with distinct fonts and images. The text that is present in it is of static or fixed format which is just like an image and it remains exactly the same even if we open this file using other programs, hardware and different operating systems. That is why it is recommended to convert the file into this format before printing or transferring, so, that the arrangement of the lines remains the same. Thereby, the output that is generated is always a printer-ready. These files are editable and can be amended using various editors. Several files can also be merged and compressed online. It does not only support Adobe Acrobat Reader but also other similar programs. These files can be sent, saved and viewed easily using phones, computers or tablets. |
| Technical description | There is a vast horizon of features that are available in PDFs. The content in it can have logical structuring elements, annotations, rich media, digital signatures and 3D computer graphics data (U3D); etc. Although, it is a 7-bit ASCII (American Standard Code for information interchange), yet, it may contain binary content as well. This file starts with a header which indicates how bits are used to encode information, succeeded by the version of the format. Furthermore, it is a subset of COS i.e. Carousel object structure, which expands to eight primary objects named as- Boolean Values (true or false), numbers, strings, names, arrays, dictionaries, streams and the null object. These files can also be password protected for security reasons. |
| Links | wikipedia.org (opens in new tab - official documentation) |
| File extension | .heic |
|---|---|
| File category | Image File |
| Stands for | High efficiency image coding |
| Developer | Moving Picture Experts Group (MPEG) |
| Overview | HEIC allows the storage of images and graphics in high quality by providing better compression than traditional formats, such as JPEG. It is widely used by Apple in its devices, like iPhones and iPads, for storing photographs. It is popular among the public due to its high efficiency and improved quality. |
| Technical description | HEIC is a part of HEIF (High Efficiency Image Format) and uses HEVC (High Efficiency Video Coding) to compress the files. This method provides highly efficient files in a reduced size. The file structure includes image data, metadata, and auxiliary data, which help to take live photos and create animated images. |
| Links | wikipedia.org (opens in new tab - official documentation) |
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