Alternatives to ImageOptimizerBot

A short-named image sizing/compression bot — another confirmed-live option worth trying if a favourite compressor is unavailable.

A plainly named general-purpose compression bot — no detailed bio, but a clear single job implied by the name.

A compression bot with a concrete, published promise: shrink JPG, PNG and WEBP files by up to 90%, free, no watermark and no registration.

An all-in-one PDF toolbox: its own bio lists image-to-PDF and PDF-to-image conversion as core services, making it a broad default choice for everyday PDF chores.

An open-source resizer purpose-built for one job: preparing images to the exact 512px specs Telegram sticker packs require, with the code published on GitHub.

One more directly named compression bot — functionally similar to its close relatives, worth having as a backup option.

Another confirmed-live, plainly named compression bot in the same crowded niche — a fine third or fourth option to keep on hand.

A plainly named photo-resizing bot — useful for shrinking dimensions to fit a specific requirement, such as a form's upload limit.