Image compressor
Compress images with adjustable quality and an optional target size in KB for JPG/WebP. Compare results and download your batch as a ZIP.
How to use this tool
Choose format and quality. For JPG or WebP, an optional target file size searches for a quality level below that limit without resizing. Compare each resulting file before downloading.
Method and limits
Target size is an aim, not a guarantee. Unreachable targets are flagged; use the resizer to reduce dimensions. This browser encoder has no PNG quality control, so PNG outputs can remain large.
Related tools
WebP to JPG
Batch conversion with quality control, background color and ZIP download. Local processing. No account required.
PNG to JPG
Turn transparent PNGs into JPG with your chosen background. Local processing. No account required.
JPG to WebP
Adjust WebP quality and compare the output size with your original JPG. Local processing. No account required.