Compress JPEG, PNG and WebP images in your browser — no uploads, no server, 100% private. Adjust quality with a live slider, compare before and after, and download in seconds.
Drag and drop your image onto the tool or click to browse. Supports JPEG, PNG and WebP up to 20 MB. Your image never leaves your browser — all compression happens locally on your device using the HTML5 Canvas API.
Use the quality slider (1–100) to control the balance between file size and image quality. The live preview updates instantly as you drag — you can see compression artefacts before committing. For most web use cases, 70–85 is the sweet spot.
Click Download to save your compressed image. The tool shows the original size, compressed size and percentage saved side by side. For JPEG and WebP output, the quality setting controls lossy compression. For PNG, lossless compression is applied.
No — this tool compresses images entirely in your browser using the HTML5 Canvas API and the File API. Your image never leaves your device and is never sent to any server. This makes it safe for compressing sensitive photos, personal images, documents scanned as images and proprietary design assets.
The tool supports JPEG (.jpg, .jpeg), PNG (.png) and WebP (.webp) as input formats. For output, JPEG and WebP use lossy compression controlled by the quality slider. PNG output uses lossless compression — PNG file sizes are inherently larger than JPEG for photographs, but PNG is ideal for screenshots, logos and graphics with transparency.
For web images (blog photos, product images, banners), a quality of 75–85 typically reduces file size by 50–70% while keeping images visually indistinguishable from the original. For thumbnails and social media previews, 60–75 is acceptable. For print-quality or archival images, use 85–95. The live preview lets you judge quality for your specific image.
PNG uses lossless compression, meaning no image data is discarded — the file size reduction is limited to removing metadata and optimising the encoding. JPEG uses lossy compression which achieves much higher reduction ratios by discarding imperceptible image data. For photographs, converting to JPEG typically achieves 70–90% smaller file sizes than PNG.
The tool supports images up to 20 MB in their original size. Very large images may take a moment to process on lower-powered devices since compression happens locally in the browser. There is no limit on the number of images you can compress — simply process them one at a time.
No — this tool reduces file size without changing the image dimensions (pixel width and height). The output image has the same resolution as the input. If you also need to resize (reduce dimensions), use a dedicated image resizer after compressing.
Lossy compression permanently removes some image data to achieve smaller file sizes. JPEG and WebP use lossy compression — at high quality settings the loss is imperceptible, but at low settings you may see artefacts (blurriness, colour banding). Lossless compression removes no image data — the decompressed file is pixel-perfect identical to the original. PNG uses lossless compression.
The current tool processes one image at a time for maximum quality preview and control. After downloading a compressed image, simply drag the next image onto the tool to process it. For bulk compression of many images, consider using the tool in a browser tab and processing images sequentially.
Image complexity heavily influences compressed file size. A photograph with many fine details, textures and colour variations compresses less efficiently than a flat graphic or cartoon. A 1 MB photo of a beach might compress to 150 KB while a 1 MB screenshot of a webpage might compress to 80 KB at the same quality setting.
The Image Compressor is a general-purpose tool for all image types (JPEG, PNG, WebP) with a quality slider for manual control. The JPEG Optimizer is specifically optimised for JPEG files and provides additional JPEG-specific controls including chroma subsampling and progressive encoding options that can achieve better results for photographic content.
