Apps similar to Curtail include Caesium Image Compressor, which is free and open source. Other options are Dinky, GetCompress, ImageOptim and TinyFast. Image Optimizers like Curtail are a crowded field, with more than 50 alternatives for Windows, Mac, Linux, the web and Android.
jStrip is a free tool to reduce the file size of JPEG images without sacrificing image quality. High-traffic websites with many JPEG images can benefit from decreased bandwidth costs. Less hard disk space will be used by image collectors.
Crunch - Insane(ly slow but wicked good) PNG image optimization. It combines selective bit depth, color type, and color palette reduction with zopfli DEFLATE compression algorithm encoding using embedded versions of the pngquant and zopflipng PNG optimization tools.
Free EXIF Eraser is a free lightweight software that allows you to easily and effectively delete entire EXIF/IPTC/XMP information from image files.
With JPEG Resampler you are able to change the resolution and size of JPEG images of a directory in one go and move them into another folder.
Czechia
EU
Squeezer is a PNG optimizer for Mac OSX that recompresses image files to a smaller size, without losing any information.
Switzerland
The JPEG Reducer is a frontend of the command line utility jpegtran, which is the lossless transformations expert inside the Independent JPEG Group's JPEG software package. The JPEG Reducer provides a graphical user interface, batch processing, a preview of the optimization...
Free browser tool for compressing, converting, and resizing bulk JPEG, PNG, WebP, and AVIF images entirely locally with WebAssembly, offering fast, private, unlimited processing, multi-core support, offline use, and ZIP export that keeps folder structure.
FranceEU
Fast, 100% offline, privacy-first image compressor and HEIC/WebP converter running locally in your browser via WebAssembly.
IMAGEmini, a powerful photo resizer and optimizer, allows you to optimize all your photos by 80% ~ 20% comparing to their originals while keeping their original resolution, quality and png, jpg, gif formats.
China
Mass Image Compressor is easy to use - a point and shoot batch image compressor and converter tool for Web site optimization, photographers, HTML game creator and casual Windows users.
Photo Resizer Expert - Versatile batch image resizer - Adjust, apply effects and filters to images - Watch folders - Resize image with right click in Windows Explorer.
GreeceEU
free online image compressor for faster websites! reduce the file size of your webp, jpeg, and png images with tinypng.
