Five image compression tools compared on batch, animation, formats, and limits

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A feature-by-feature comparison of five image compression tools — TinyPNG, compressor.io, docsmall, Squoosh, and ImgIng — examines what each can and cannot do beyond basic compression ratios. TinyPNG and docsmall support batch processing, while ImgIng goes further by handling entire folders; Squoosh and compressor.io process only one image at a time. ImgIng is the only tool among the five that compresses animated GIF, APNG, and animated WebP files using inter-frame differencing. On format support, Squoosh offers the broadest encoder options for single images, compressor.io uniquely handles SVG, and docsmall adds PDF compression, while ImgIng and Squoosh both run entirely in the browser, meaning files never leave the user's device. Regarding limits, Squoosh and ImgIng impose no file count caps or login requirements, whereas TinyPNG caps free use at 500 images per month and other server-based tools restrict maximum file sizes on free tiers.

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