Users can permanently remove redact visible text and images from PDFs to protect sensitive information. Users can also add, rename, delete bookmarks, or set destinations to bookmarks.
How to edit text in PDF:
PDFpen for Mac
Sketch: Sketch shapes with this tool. If Preview recognizes a shape you draw it will choose that instead. On Macs with a Force Touch touchpad, a second Draw tool appears. This is force sensitive and lets you draw thicker shapes in reaction to the pressure of your touch.
Text : Tap this box to enter text, then drag the text to where you want it to be. You can edit font, size, and color using the Text Style tool to the right of this tier of the toolbar.
Sign : This tool lets you sign documents if possible in the document you are using. If working with images the Adjust Color tool is available in this position. Adjust Color includes adjustment sliders for exposure, contrast, highlights, shadows, saturation, color temperature, tint, sepia, and sharpness. Border colors: Change the color of any shape borders you might have applied using this tool.
Change colors: Change the color of any shape content using this tool. Font: Here you can change fonts, size, font color, text layout, and apply bold, italic or underline. One of the most common tasks for anyone who works with images, Preview is a capable workhorse. Open the image you want to resize in Preview. In the Menu bar select Tools and Adjust Size. The Adjust Size pane contains a range of custom settings, and also lets you configure your own image size in pixels, centimeters, millimeters, points, percent, and inches.
You select these in the drop-down menu to the right of image size. When you have resized your image to your satisfaction, select OK.
Just select a shape or tap and drag the cursor across the image you wish to crop. Position it appropriately so the parts of the image you like are selected. Open an image and select it, or open an image and select part of it. A new window will open with the image you have copied. Now you can perform further edits, resize the image, or save it in different image formats.
Open the image you wish to remove the background from and select Instant Alpha. Select and hold inside the area of the image you want to remove Keeping your mouse depressed, move the pointer slightly. You should see a red overlay appear, keep moving until the area you want to get rid of has been selected If you begin selecting image elements you want to keep, just move the pointer slowly in the opposite direction to deselect that element.
Editing PDFs with Preview
When you have selected the area that you wish to get rid of, tap Delete. You may need to repeat this process to get rid of everything you want rid of. Open both images in Preview you can open them both in one single window if you select them both and then open them. Select the image you want to take the large object from, and use the Instant Alpha tool to get rid of the background you no longer need, as described above.
Now move to the image you want to paste this object in and type Command-V Paste.
Edit a PDF file
Just open your image. Take an image and use one of the selection tools to select an area of that image. You can easily convert an image to black and white using Preview. Open the Image, and launch the Adjust Color tool. Slide Saturation all the way to the left to remove all color from the image. Now you can tweak the Exposure, Contrast, Highlights, Shadows , and Levels tools to see if you can improve the overall appearance of this image.
If you don't like the results just select Reset All to return the image to its original state. You can add a speech bubble containing text to any image. Select the Shapes button and choose the speech bubble shape. You change the thickness of the speech bubble lines using the Line tool.
How to Edit PDF Files on Mac
You alter the color of the border using the border colors tool And change the fill color of the speech bubble using the colors tool. Once you have the bubble created to your satisfaction, tap the text icon and a text field will appear on your image. Type the words you want to see and then move them to fit inside the speech bubble. You adjust the appearance of the font in the Fonts menu. The Save dialog will appear: look for the Format item, a drop-down list that contains all the currently active formats, select the one in which you wish to save your image.
You can use Preview to batch convert multiple images into a new image format. Just select all the images in Finder and drag-and-drop them on the Preview icon in your Dock.
A Preview window will open with all the images previewed sic in the left-hand sidebar. Now select the sidebar and choose Select All from the Menu. Choose the desired image format in the Save dialog as described above.
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