lazy-load and auto-scale fixes

• added: automatic plan upgrade detection
• changed: better compatibility with other implementations of "native lazy load"
• updated: lazysizes.js to version 5.2
• fixed: custom domain for Easy IO prevents auto-scaling
• fixed: full-width background images auto-scaled due to scroll bars
• fixed: overrides for array-style exclusions not being applied

from 5.2.1:

• changed: WebP rewrite rules hidden for Cloudflare-protected sites
• fixed: Smart Re-optimize not working for PDF files
• fixed: Easy IO detects wrong domain when using separate domains for site and content

exclusions and tools and overrides, lots of em

• added: Lazy Load, JS WebP, and Easy IO support background images on link elements
• added: JS WebP supports background images on section, span, and li elements
• added: exclude images from Easy IO in settings
• added: exclude images from Lazy Load by string or class name
• added: prevent auto-scaling with skip-autoscale
• added: Folders to Optimize, Folders to Ignore, Lazy Load Exclusions, Easy IO Exclusions, and WebP URLs can be defined as overrides (single value as string, multiple values as an array)
• added: API key, JPG Background (for conversion only), and Disabled Resizes can be defined as overrides, see https://docs.ewww.io/article/40-override-options
• added: PNG placeholders for Lazy Load retrieved direct from API for drastically reduced memory usage (API users only)
• added: Smart Re-optimize option available on Bulk Optimizer if you want to re-optimize images that were compressed on a different setting
• added: auto-restore for Smart Re-optimize when going from lossy to lossless mode
• added: Restore & Re-optimize from Media Library to change individual images from lossy to lossless
• added: search function for Optimized Images table (Tools menu)
• added: table cleanup for database table (Tools menu)
• fixed: errors due to duplicate ssl= arguments in URLs
• fixed: JS WebP has incorrect selector for video elements (props @CharlieHawker)
• updated: embedded help code for better debug prefill

lazy load improvements

• added: better compatibility with Divi filterable grid images and parallax backgrounds
• added: cleanup .webp and database records when using Enable Media Replace
• fixed: Divi builder will not load with Easy IO and Include All Resources active
• fixed: image cover block with fixed width scaled too much
• fixed: PNG placeholders could use more memory than available
• removed: Lazy Load CSS gradient for blank placeholders

blank placeholders and bug-fixes

Most notably in this release, ExactDN is renamed to Easy IO, and now uses blank placeholders for lazy-loading instead of LQIP by default:

• added: disable native lazy-load attributes with EWWWIO_DISABLE_NATIVE_LAZY
• added: ability to choose LQIP or blank placeholders for lazy load
• changed: renaming ExactDN as Easy IO
• changed: default to blank placeholders with Easy IO
• changed: regenerated images are automatically re-optimized after running Image Regenerate & Select Crop plugin
• fixed: low-quality placeholders sometimes had larger dimensions than necessary
• fixed: database records and .webp images are not removed when Image Regenerate & Select Crop plugin deletes a thumbnail
• fixed: path traversal protection preventing normal files from optimizing
• fixed: Slider Revolution dummy.png not properly handled by Easy IO

WebP-only mode and JS WebP improvements

• added: WebP-only mode for Bulk Optimizer
• added: JS WebP Rewriting for pull-mode CDNs via WebP URLS without Force WebP
• added: JS WebP Rewriting zero-conf for WP Offload Media
• added: force lossy PNG to WebP conversion with EWWW_IMAGE_OPTIMIZER_LOSSY_PNG2WEBP override (set to true)
• changed: bulk optimizer runs wp_update_attachment_metadata() in separate request to avoid timeouts
• fixed: WebP warning regarding missing modules displayed even if green WebP test image is working
• fixed: Nextgen bulk actions not working
• fixed: unable to regenerate existing thumbnails with Image Regenerate & Select Crop plugin
• updated: WebP (cwebp) binary to version 1.0.3
• updated: Pngquant binary to version 2.12.5
• updated: cwebp requires Mac OS X 10.14
• updated: FreeBSD 10 is EOL, version 11 is the supported/tested version

new tools page and more

• added: use native lazy load attributes to supplement lazy loader and make placeholders more efficient
• added: GCS sub-folder rewriting with ExactDN for cleaner URLs
• added: option to optimize original versions of scaled images for WP 5.3
• added: ability to erase optimization history from Tools page
• changed: define EWWWIO_WPLR_AUTO (any value) to enable auto-optimize on images from WP/LR Sync
• changed: thumbnails could be converted even if original was not
• changed: Show Optimized Images table moved to Tools menu
• fixed: full-size image optimization not deferred if scaled by WP 5.3
• fixed: data-width and data-height attributes missing when JS WebP active
• security: rewrote escapeshellarg() wrapper to be more secure

better page builder compat

• fixed: ExactDN incorrectly scales Elementor background images rather than cropping
• fixed: ExactDN cannot work with Divi/Elementor background images due to use of external CSS files
• fixed: JS WebP rewriting picture tags that already have WebP markup in Force WebP mode
• fixed: JS WebP incorrectly parses GIF/SVG images in Force WebP mode
• fixed: JS WebP does not support lazy load + infinite scroll
• fixed: Lazy Load auto-scaling breaks if background image is enclosed in encoded quotes
• fixed: GRAND FlaGallery integration broken by hook suffix change

importer fixes

• fixed: generating lazy load PNG placeholders with large heights causes 500 errors
• fixed: error when importing media via WordPress Importer plugin
• fixed: error with WP/LR Sync

js webp fixes

Fix error on settings page, and notices on image-less pages when JS WebP is enabled.

Lazier Loading and Easy IO Compatibility

• added: Lazy Load background image support for section elements
• added: ExactDN background image support for li,span, and section elements
• added: lazysizes print plugin, enable via EWWW_IMAGE_OPTIMIZER_LAZY_PRINT constant
• added: compatibility with upcoming Easy Image Optimizer
• changed: automatic compression disabled during WP/LR Sync with admin notice
• changed: Lazy Load PNG placeholders capped at 1920px wide to prevent errors
• changed: use ExactDN, when active, for Lazy Load PNG placeholders
• changed: EWWW_MEMORY_LIMIT renamed to EIO_MEMORY_LIMIT for setting plugin memory limit
• fixed: WebP test image not refreshing after inserting .htaccess rules
• fixed: errors when manually adding lazysizes script