ImageSmaller review
A free browser tool for lossless compression and format conversion, with few controls.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
ImageSmaller is a browser-based service for reducing image file sizes without installing software or creating an account. It processes uploads on its servers and is aimed at people who need straightforward image optimization for web use. The service fits solo users and small teams that prefer a simple online workflow over a desktop application. Its format coverage includes PNG, JPG/JPEG, GIF, TIFF, WEBP and SVG compression.
The product is free, with no paid tiers described. Its compression is presented as lossless, and the service also converts images to WEBP, AVIF, PNG and JPG. The advertised maximum upload size is 50 MB, which gives the tool a clear boundary for larger source files. Automatic removal of uploaded files after a few hours limits how long processed images remain on the service, while optimized images receive no watermark.
ImageSmaller keeps the experience narrow: select an image, process it online and download the result. That simplicity suits occasional conversions and basic size reduction, but advanced compression controls are sparse. Because it is web-only and cloud-deployed, it is less suitable for workflows that require local processing or more detailed control over optimization settings. Choose it for free, registration-free format conversion and lossless compression; consider another tool if desktop access, deeper controls or handling files above 50 MB is important.
ImageSmaller pros and cons
- Where it wins
- Lossless compression for PNG, JPG/JPEG, GIF, TIFF, WEBP and SVG
- Converts images to WEBP, AVIF, PNG and JPG
- No registration or watermark; files are removed after a few hours
- Where it doesn't
- Web-only service requires uploading images to cloud servers
- Maximum advertised upload size is 50 MB
- Advanced compression controls are sparse
ImageSmaller fact sheet, pricing and score →
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