OS X El Capitan and the newer versions of MacOS X support third-party tools that are accessible right in the Photos app. If a photo editing application offers Photo Editing extensions, you can use editing tools provided by the application from the Edit panel in Photos. Don't expect the photo editing extensions to offer the full functionality of the hosting applications. The extensions provide only a subset of the tools of the stand-alone versions, but have a much more user friendly user interface, since the extensions have been designed to offer one tool.

Below is a list of the extensions I have tried so far. To search for more extensions see:

OS X El Capitan and the newer versions of MacOS X support third-party tools that are accessible right in the Photos app. If a photo editing application offers Photo Editing extensions, you can use editing tools provided by the application from the Edit panel in Photos. A Practical Review of the Apple M1 MacBook for Photo and Video Editing. By Alex Armitage. Which I finally updated to El Capitan a few days back - to, you know.

Photo Editor El Capitan Software

• Affinity Photos: If you already own the Affinity Photos application, you have access to these six extensions:
  • Edit in Affinity Photos: This extension is giving you access to the full Affinity application
  • Affinity Develop: The basic photometric adjustments of a photo - noise reduction, exposure, shadows&highlights, white balance, contrast, ...
  • Affinity Haze Removal: A very easy to use haze removal filter
  • Affinity Miniature: A depth of field effect
  • Affinity Liquify: Change the shape of regions
  • Affinity Monochrome: Turn color photos into monochrome or black&white photos
  • Affinity Retouch: A versatile retouch tool, including in-painting.
• Aurora HDR 2018 and 2019: It provides a collection of powerful HDR presets, a great companion to Luminar 2018.
• BeFunky: A basic set of portrait adjustments: Skin smoothing and skin tone, teeth brighten, eye brighten, HDR. All is automatic, there is not much control over the adjustments.
• Color Filters for Photos: Color filters for a cinematic effects, and brushes to touch up selected areas with color splashes, dodge and burn, etc, very precisely.
• DxO Optics Pro for Photos: A versatile RAW processor for Photos, fixes lens distortion, chromatic aberration, noise reduction, sharpening, ... It does not yet support many RAW formats, but the list is getting longer daily.
• External Editors: This app extension will open any external image editor you have installed directly from Photos, and thus will give you access to the full functionality of your image editors, not just the tools provided as app extensions. It is the doorway to Photoshop, Pixelmator, Gimp, the NIK plug-ins, whatever you have installed.
• Focus CK: Beautiful Depth of field effects
• FX Photo Studio CK: Plenty of effects and frames
• Graphic Converter 10: Edit with Graphic Converter 10 - essentially open the photo on Graphic Converter 10 for editing
• Insta Beauty: Easy tools for retouching a face: Skin smoothing, Eye brightening, eye enlargement, pouch removal, teeth whitening.
• Intensify CK: Noise reduction, HDR, intensify effects for Black&White, landscape, architecture, ...
• Luminar: Edit in Luminar will open Luminar for editing the Photo.
• Noiseless CK: A great noise reduction tool
• Photolemur 3: A fully automatic image enhancer, uses artificial intelligence to recognize the important objects in the photo, like faces, the sky, vegetation, and improves them
• Picktorial: Open the Picktorial Image editor (Have not tested it yet)
• Pixelmator Distort: Distort the shape of regions.
• Pixelmator Retouch: Recently added. Versatile retouching brushes - cloning, repairing by in-painting, blurring, sharpening, dodging and burning.
• Snapheal CK: Retouching and image restauration tools
• Super Borders: Frame the photo with borders. Most borders require an in-app purchase.
• Tonality CK: Presets for turning color photos into monochrome photos
• Watermarker Tool: Define watermark defaults in the stand-alone version of the application, then add them to your photos using the photo editing extension. I found the workflow not very intuitive.

If you are interested in FX Photo Studio and Focus, buy the CK versions. The versions without CK in the name do not provide the Photo Editing extension. The CK versions are directly available from MacPhun's website.

To use the photo editing extension, install the apps, launch them once, then enable the extensions in the System Preferences > Extensions. Relaunch Photos, and you can now use the extensions from the Edit panel in Photos.

Recently added Photo editing extensions that I did not yet try. These are available from the AppStore:

• Stamp Photos Extension: it will add multiple texts or watermarks to a photo with different values of transparency or fonts.
• Perspective Photos Extension: Straighten or deskew photos and graphics - use affine transforms or perspective correction.
• Vintage Photos Extension: add grain or different types of paper or surface to your photos.
• HighDR Photos Extension: HDR effects for a single photo. You can apply the effect to selected spots or the full image.
• Edge Photos Extension: Add and design arbitrarily shaped borders, and make the borders transparent, so your photo has a custom shape.
• Hay Photo: Custom designed filters and adjustments, turn your photo into a pencil sketch

This page explains how to use the extensions: Edit your photos using third-party extensions in Photos for OS X - Apple Support

Some extensions cannot open original files in HEIC format, important for photos taken with an iPhone 7 or newer. In that case use the 'External editors' extension to call the application and pass the images converted to TIFF or JPEG.

• Filed to: PDF Editor

A lot of times we need to edit PDF files and when you are looking to do so, you can make use of Nitro PDF Editor. It is one of the finest editors which come packed with plenty of features. However, this isn't the only software which you can use, especially on Mac OS X 10.11 (Including macOS Sierra 10.12). Let us take a look at a Nitro PDF for Mac OS X El Capitan (Sierra included) alternative - PDFelement Pro, which can aid in editing the PDF files.

Nitro Pro for Mac OS X 10.11 Alternative

PDFelement Pro - The Best Alternative to Nitro PDF Professional

When you are looking for an alternative for Nitro PDF Pro, you should make smart use of PDFelement Pro. This is one of the top software which is robust and reliable. It allows you to edit PDF with ease. With the OCR plug-in, you can even directly edit your scanned PDFs or convert the files to editable document. You have the option of adding markups and annotation to your PDF files.

You can encrypt your PDF files with the help of a password and it aids in enhancing security. It also gives you easy conversion of pdf files into various other formats like MS Word, PPT, Excel and more. This product is compatible with different versions of OS including Mac OS X 10.11 El Capitan (Sierra included).

Why Choose This Nitro PDF Editor Alternative:

• Easily edit PDF texts, graphics, images, links, watermarks, etc.
• Add watermark, signature and password to PDF with ease.
• Convert PDF to images, Word, Excel, PPT, EPUB and more formats easily.
• Edit and convert scanned PDF files with advanced OCR feature.
• Combine multiple files into PDF and split PDF into several files.

How to Handle PDF Files Using Nitro PDF Alternative on Mac OS X 10.11

Step 1. Add Your PDF to the Program

Photo Editor El Capitan

Launch this Nitro Pro for Mac equivalent on your computer. In the main interface, you will find a menu bar which will have the option 'Open File'. Click on it to import the PDF file by choosing the destination where the file is stored. When the file has been imported, it will open in your software interface.

Step 2. Edit a PDF as You Want

Click the 'Edit' button from your toolbar. Now, you can double click on any part of the text which you wish to edit. In the toolbar, you can click on 'Add Text' tool and this will allow you to add text in it. In the same manner, you can also modify, delete or alter text as well.

Opening the file in this tool bar makes it easy to edit as you can edit the files like you work on MS Word. You can also add images and graphics to it.

Step 3. Markup Your PDF File

Select the PDF text which you want to markup and the choose any of the following-highlight, underline or strikethrough tool from the top toolbar. You can add comments and make free hand drawings as well by clicking the 'Markup' button.

Step 4. Convert PDF Document to Other Format

This software can be used for the sake of converting PDF files into various other formats including MS Word, Excel, PowerPoint and more. You can hit the 'Convert' button on the top menu. A new dialog box will appear wherein you need to import the file which you want to convert.

If you want to convert your PDF file partially, you can specify the page range which you want to convert. Choose an output format you prefer. Click on 'Convert' to activate the conversion process.

No doubt, PDFelement Pro is the better choice. It is packed with some of the best features and the interface is simple and easy to use. The kind of file formats which is supported is whopping too and so you can easily make conversions to and from the different file types.