The Leanpub 60 Day 100% Happiness Guarantee
Within 60 days of purchase you can get a 100% refund on any Leanpub purchase, in two clicks.
See full terms...
Retired
This book is no longer available for sale.
Essential Image Optimization
Shrink the size of your images for better performance
Image optimization consists of different measures that can reduce the file size of your images. It ultimately depends on the visual fidelity your images require. Common image optimizations include compression, responsively serving images using the <picture> element and resizing to keep image decode costs low. Non-critical images can be lazy-loaded.
PDF
EPUB
216
Pages
About
About the Book
Optimizing images can offer some of the biggest size savings and performance improvements to your website. The fewer image bytes a browser has to fetch, the less competition there is for a user’s bandwidth and the quicker a browser can download and display content on the display.
This book focuses on practical tools and techniques for automating image optimization as much as possible.
What you'll learn:
- Explore why image optimization is important
- Dive into JPEGs, PNGs, WebP, SVG, lossy and lossless compression
- Learn tips and tricks for what tools to use for automating your image optimization easily
- Discover how modern JPEG encoders like MozJPEG and Guetzli can shrink your images even more
- Understand techniques for intelligently loading images as they are needed, like lazy-loading
- Examine how browsers process images and how this can be expensive on mobile
- Understand the pros and cons of self-optimization vs using a third-party CDN
When considering image optimization, remember that the fastest request is the one that doesn’t need to be made. Ask yourself whether an image is required to deliver a good user experience. Images you can eliminate will always be the best optimization strategy. If an image is needed, there are many techniques covered in this book that can reduce the number of bytes required to deliver them.
Feedback
Author
About the Author
Earn $8 on a $10 Purchase, and $16 on a $20 Purchase
We pay 80% royalties on purchases of $7.99 or more, and 80% royalties minus a 50 cent flat fee on purchases between $0.99 and $7.98. You earn $8 on a $10 sale, and $16 on a $20 sale. So, if we sell 5000 non-refunded copies of your book for $20, you'll earn $80,000.
(Yes, some authors have already earned much more than that on Leanpub.)
In fact, authors have earned over $15 million writing, publishing and selling on Leanpub.
Learn more about writing on Leanpub
Free Updates. DRM Free.
If you buy a Leanpub book, you get free updates for as long as the author updates the book! Many authors use Leanpub to publish their books in-progress, while they are writing them. All readers get free updates, regardless of when they bought the book or how much they paid (including free).
Most Leanpub books are available in PDF (for computers) and EPUB (for phones, tablets and Kindle). The formats that a book includes are shown at the top right corner of this page.
Finally, Leanpub books don't have any DRM copy-protection nonsense, so you can easily read them on any supported device.
Learn more about Leanpub's ebook formats and where to read them
Write and Publish on Leanpub
You can use Leanpub to easily write, publish and sell in-progress and completed ebooks and online courses!
Leanpub is a powerful platform for serious authors, combining a simple, elegant writing and publishing workflow with a store focused on selling in-progress ebooks.
Leanpub is a magical typewriter for authors: just write in plain text, and to publish your ebook, just click a button. (Or, if you are producing your ebook your own way, you can even upload your own PDF and/or EPUB files and then publish with one click!) It really is that easy.