Kraken.io vs MumenLabs 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.

MumenLabs Image Compressor is a browser tool for compressing, resizing, and converting images locally on a device. It accepts JPG, PNG, WebP, GIF, and HEIC files, and converts among JPG, PNG, WebP, and HEIC. Compression can use an adjustable quality setting or a target size such as under 100KB or 1MB. Resizing supports exact pixels, percentages, and presets for Instagram, TikTok, YouTube, Facebook, X, LinkedIn, and Pinterest. A metadata option removes EXIF and GPS details before download. Batch processing is supported, with PNG and ICO export, app icon sets, and web manifest support. MumenLabs says files are processed in the browser, never uploaded, and remain usable offline after loading. The tool works in desktop and mobile browsers without a download, app, plugin, or extension. The Free plan costs nothing, requires no account, and has no watermark, batch limit, size limit, or daily quota; hardware is the practical constraint.