# Image Compressor > Compress images online without losing quality. Reduce JPG, PNG, and WEBP file sizes by up to 90% for faster websites — free, no upload to servers. Compress JPG, PNG, and WebP images right in your browser. Batch-compress a whole set at once, drag a quality slider or set an exact target size (compress to 100KB, 200KB, and more), convert to WebP for the smallest files, optionally resize, and compare the before/after with a slider. Nothing is ever uploaded. - **Live tool:** https://www.toolnova.org/image-tools/image-compressor - **Category:** Image Tools (https://www.toolnova.org/image-tools) - **Price:** Free - **Requirements:** Runs in a modern web browser · No signup · No install ## What this tool does - Batch compression — drop many images at once - Quality slider or exact target size (compress to 100KB/200KB) - Output as WebP, JPEG, PNG or keep original format - Optional max-width resize before compressing - Before/after slider with live file-size comparison - Download each file or all at once — 100% client-side ## How to use Image Compressor 1. **Add your images** — Drag and drop one or many images, or click to browse. JPG, PNG, and WebP are all supported and processed together. 2. **Pick a mode** — Use Quality mode and drag the slider, or switch to Target-size mode and set an exact KB budget — the tool tunes quality automatically to hit it. 3. **Choose format & size** — Output as WebP for the smallest files, or keep the original type. Optionally cap the max width to shrink large photos further. 4. **Compress & download** — Click Compress, review the savings and before/after slider, then download each optimized image or all of them at once. ## Common use cases - Shrink hero and blog images to improve Core Web Vitals (LCP) - Compress a photo to under 100KB for a form or upload limit - Batch-optimize product photos for Shopify, Amazon or Etsy - Reduce email attachment size without emptying your inbox quota - Convert PNG screenshots to lightweight WebP for the web ## About ### Shrink image file size without visible quality loss This compressor reduces JPEG, PNG, and WebP file sizes dramatically while preserving how the image looks, so pages load faster and uploads finish sooner. Smaller images are also a direct SEO win — page speed is a ranking factor. ### Compress in-browser, keep your originals private All compression runs locally, so your images are never sent to a server, and you keep full control of the originals. Use it to optimize photos for the web, email attachments, or storage without installing anything. ## FAQ ### How do I compress an image without losing quality? Upload your image and use the quality slider to find the right balance. For most photos, 70-80% quality reduces file size by 50-60% with no visible quality loss. WEBP format typically gives the best compression. ### Can I compress an image to an exact file size like 100KB? Yes. Switch to Target-size mode and set your budget (50KB, 100KB, 200KB, or any custom value). The tool automatically runs a quality search and lands just under your target, so you don't have to guess the right quality percentage. ### Can I compress multiple images at once? Yes — drop as many images as you like and they're all added to a queue. One click compresses the whole batch with your chosen settings, and you can download each result or all of them together. Everything stays in your browser. ### How do I reduce an image size to under 100KB? Upload your image, reduce the quality slider to around 60-70%, and check the output size. If still too large, reduce quality further or resize the image dimensions first. WEBP format typically achieves smaller file sizes than JPG. ### What is the best image format for websites? WEBP is the best format for websites in 2025 — it's 25-34% smaller than JPG at the same quality. For images needing transparency, use WEBP or compressed PNG. Avoid unoptimized JPGs on web pages. ### Does compressing images affect SEO? Yes — smaller images load faster, which improves Core Web Vitals (LCP score), a key Google ranking factor. Google recommends images under 100KB for good page speed scores. ### Is my image uploaded to a server when I compress it? No. This compressor runs entirely in your browser using the Canvas API. Your images never leave your device — ideal for compressing private or confidential photos. ### How do I compress images for better Google PageSpeed scores? Google's PageSpeed Insights recommends images under 100KB for fast page loads. Compress your images to under 100KB using 70-80% quality, convert to WEBP format, and serve them at the correct display dimensions. These three steps alone can improve your Core Web Vitals (LCP) score significantly. ### Will compression hurt image quality? Used sensibly, the drop is barely visible — the preview lets you find the point where size falls sharply but quality holds. ### Does image size affect SEO? Yes, indirectly. Lighter images load faster, and page speed is a ranking and user-experience factor Google rewards. --- ToolNova — free, privacy-first browser tools. Most tools process data locally on your device. See https://www.toolnova.org/llms.txt for the full directory.