Upload Image
Drag & drop or click to upload
JPEG, PNG, WebP, GIF
How it works
The Image Compressor reduces the file size of JPG, PNG, and WebP images through quality adjustment and color optimization — entirely in your browser. Choose a target quality level or set a maximum file size, and the tool iterates to find the best compression settings automatically.
File size matters in two key scenarios: web performance and upload limits. A hero image served at 4MB adds 3–4 seconds to page load on mobile connections. Most file upload fields accept a maximum of 2MB for profile photos. Email attachments cap at 10–25MB. Product photography taken on a modern iPhone is routinely 10–15MB per photo and needs to be compressed to under 500KB for web use.
How to use it: upload an image. The original file size is shown. Drag the quality slider — or enter a target file size in KB — and the preview updates in real time showing the compressed result alongside the original for visual comparison. The compression ratio and resulting file size are displayed before you download.
Compression by format: JPG uses lossy compression — quality 85 typically produces results visually identical to the original at 60–70% smaller size. PNG uses lossless compression — the optimizer reduces the color palette and removes metadata. WebP achieves 25–35% better compression than JPG at equivalent visual quality and is supported by all modern browsers.
Quality guide: quality 90-100 = near lossless (best for print, archives), quality 75-89 = high quality (hero images, portfolio), quality 60-74 = web quality (blog images, thumbnails), quality 40-59 = small files (previews, icons).
Privacy: your images are compressed in the browser. No pixel data is sent to any server. Compression of a 10MB photo typically takes under 500ms on a modern device.
Frequently Asked Questions
- Quality 80–85 is the standard recommendation for web photos. It produces files 60–70% smaller than the original while retaining detail that's visually indistinguishable from the uncompressed version when viewed at normal screen size.
- PNG uses lossless compression, which cannot be made 'lossier' without converting to JPG or WebP. If you upload a PNG and want a smaller file, convert it to JPG or WebP using the Image Format Converter. Compressing an existing JPG at lower quality will reduce it further but at visual cost.
- Yes. Drag and drop multiple files into the upload area. Each is compressed with the same quality setting and downloadable individually. Batch download as a ZIP is also available.
- Yes. Each lossy compression (JPG, WebP with quality < 100) introduces generation loss. Compressing an already-compressed JPG at the same quality setting produces measurable quality degradation. Always keep the original file and compress from that.