Compress image

Compress image — Online image compressor

Compress JPG, PNG, WebP, and AVIF images in batches with smart optimisation, a target KB limit, or manual quality and dimension controls. WASM encoding runs locally in your browser.

Smart compression, target KB, or manual quality

Choose Smart, Target size, Custom quality, or High fidelity according to the job. Smart mode suits websites and everyday sharing. Target size searches for the highest quality that stays under your ceiling, which is useful for application forms, email attachments, and publishing systems with strict upload limits.

Batch JPG, PNG, WebP, and AVIF compression

Select several images, a whole folder, or a ZIP archive. Review any file in the queue, process selected files or everything, and export individual results or one ZIP. JPEG uses MozJPEG, PNG uses OxiPNG, and WebP and AVIF use dedicated browser WASM encoders that load only when required.

Get smaller images without avoidable damage

Photographs usually work well as WebP, AVIF, or JPEG; transparent artwork is better suited to WebP or PNG. Start with Smart mode, zoom into fine texture and text, then adjust quality if needed. For a strict KB ceiling, dimension fallback can progressively reduce the long edge after the minimum quality is reached.

Compare, verify, and continue editing

Use the before-and-after slider to inspect edges, gradients, and texture. Every result reports input and output bytes, savings, dimensions, format, quality, and the actual encoding strategy. Download one result, selected results, or a ZIP, then pass images directly to crop, resize, watermark, and other local tools.

Privacy, metadata, and browser limits

Images are decoded and compressed in the current browser and are not uploaded by this tool. Re-encoding removes EXIF and GPS metadata while originals remain unchanged; an original kept byte for byte retains its metadata. Very large images and large batches require substantial memory, so inspect final output before formal submission or publication.