Kraken.io vs XConvert Image Compressor

Kraken.io is an image optimization service with a browser tool and an API. In the browser, it can optimize, compress, resize, and convert images without code; it also accepts ZIP archives and returns a processed archive. Supported formats are JPG, PNG, WebP, GIF, SVG, AVIF, HEIC, and PDF. The service offers batch processing, metadata controls, and both listed compression modes, with a maximum upload size of 32. Each account starts with 100 MB of testing quota, and signup does not require a credit card. Monthly quota is measured by unprocessed source image data before overage charges. Plans include Free, Micro, Basic, Advanced, Premium, and Enterprise; the pricing note lists paid service from $5/mo. Customers can choose monthly or yearly billing and cancel, downgrade, or upgrade without a contract. Official plugins are available for WordPress and Magento.

XConvert Image Compressor is a web-based tool for compressing, resizing, and converting images, with batch processing and API access. It supports formats including JPG, JPEG, JFIF, PNG, WebP, HEIC, AVIF, GIF, BMP, TIFF, ICO, PPM, EPS, and several RAW formats. Images can be uploaded from a computer, Google Drive, or Dropbox. Compression can be combined with conversion to JPG, WebP, AVIF, PNG, or HEIC; metadata controls and Auto Scale are also available. Auto Scale adjusts dimensions to meet a target file size while maximizing quality. Free users can compress images up to 300 MB each, with no per-session file-count cap. Free video conversions are also offered: visitors get 30 daily, and free accounts get 60. Basic costs $4.99 a month or 49.99 USD yearly; Pro costs $9.99 a month or 99.99 USD yearly. The service says uploads use TLS in transit and files are automatically deleted after a few hours. No account is required for the online tool, and an XConvert desktop app supports offline conversion and editing.