Lightweight pdf Reader Android Edition is an easy-to-use reader, which supports viewing, editing, annotation and protection of files in various formats, and is suitable for all Android phones! If you want to edit PDF files in your mobile phone, try the reader!
Generally speaking, mobile phones can't modify PDF files, but they can still be modified with some special software!
Reference software: brisk pdf reader (mobile version)
This software is a software that can edit and modify PDF files in mobile phones. The software is small and exquisite, simple and easy to use, and does not occupy the memory of the mobile phone!
Some people may say, I just take pictures of the book page by page with my mobile phone and take it home to read it slowly. It's true that you're half done, but then you may find that the experience of browsing and shooting content with a photo browser is quite anti-human. Want to improve the reading experience? Let's honestly convert it into a PDF file. Of course, you can choose to transfer the captured page pictures to a PC, and then make them into PDF files through software. However, since you can shoot directly with your mobile phone, why not? The following is the specific operation method.
Here we will use an application called MDScan. After installation and opening, we can see that the main interface of the application is very simple and intuitive. For multi-page book scanning, it is natural to directly click the "batch mode" button in the middle, and then the application will pop up a prompt to let us choose a photo processing template. If it is a book with a large number of color pages, you can choose "no enhancement", "magazine pages" or "low light photography" according to the lighting conditions of your environment; If it is a book with white characters on a black background, you can choose "document with black characters on a white background". Because the recognition rate of automatic cropping is not perfect, it is often necessary to adjust the cropping manually, so personal suggestions do not need to check the "automatic cropping" option. "Post-processing" is suggested to be checked, because when shooting many pages at a time, it is a better choice to go back and deal with it slowly after shooting.
Select batch mode in the main interface.
It should be noted that except for the "no enhancement" effect, other effect templates will consume a certain amount of time in the final generation process, and the more pictures, the longer it will take. This is also the reason why I suggest adopting the "post-processing" mode.
Select the appropriate scanning options.
scanning stage
After the initial setting is completed, click the "Start" button to enter the shooting interface. The default mode of the application is portrait shooting mode, which is convenient for single-page shooting of most books. If you need to shoot horizontally, you can click the button in the lower left corner of the interface to switch. At the same time, there will be an arrow in the interface indicating the top direction of the current page. If you were careful, you wouldn't make a mistake. When shooting, adjust the position of the mobile phone so that the shot page basically just fills the viewfinder, and then click the "shutter" button to shoot. There are no other tips for the application during shooting. We just need to shoot one by one. If there are repeated pages, there is no problem, and subsequent editing can be easily deleted. Click the "tick" button in the lower right corner of the interface to enter the next operation.
Horizontal and vertical strokes will be indicated by corresponding arrows.
production stages
If "Post-processing" is not checked before, the application will automatically enter the processing stage of the current document after the shooting is completed. If the "Post-processing" option is selected, you can return to the main interface of the application and click the "My Scanned Files" button to enter the document list. In the list page, you can see the information of each subdocument, including time, processing or not, content pages and so on. Click a specific document to see all the picture pages contained in it. If it has not been processed before, the application will first process the picture effect according to the template we selected before shooting, and then display all the picture pages.
In the picture list page, the application will automatically sort all the pages according to the order in which we took pictures. If there are extra shooting pages, you can long press the picture and then delete it. If you need to adjust the page order, you can click the pen edit button at the bottom of the interface to adjust it. Of course, if you need to supplement it, you can also use the camera to make up the shot at any time through the "Camera" button, or import it directly from the mobile phone gallery through the "Folder" button.
Click on the picture in the list to make detailed adjustments to the page. Correction and cropping, superimposing picture effect templates, etc. Can be achieved through the button options at the bottom of the picture interface. Remember to click the "Check" button in the lower right corner to confirm saving after editing. What needs to be explained here is that the image effect templates are constantly superimposed, not the kind of filter switching in many image processing software, so long as the image is clear. Too much superposition usually makes the readability of the image worse.