Resizing to a smaller size always involves some quality trade-off, but at 85-95% JPG quality the difference is nearly invisible to the human eye. Enlarging beyond the original size (upscaling) will reduce sharpness since there's no new pixel data to add. For best results: resize down for web use, use PNG for graphics with text, and use JPG/WebP for photos. This tool processes everything in your browser using the Canvas API — no server-side compression.

100% safe. All image processing happens entirely in your browser using the HTML5 Canvas API — your images are never uploaded to any server. Your photos, graphics, and documents never leave your device. This makes the tool safe to use even with sensitive or confidential images like business documents, ID cards, or private photos.

Instagram Post: 1080×1080 px (square) or 1080×566 px (landscape). Instagram Story/Reel: 1080×1920 px. Facebook Cover: 820×312 px. Facebook Post: 1200×630 px. Twitter Header: 1500×500 px. YouTube Thumbnail: 1280×720 px (16:9). YouTube Channel Art: 2560×1440 px. LinkedIn Banner: 1584×396 px. All these presets are available in the Social Media tab above.

PNG is lossless — no quality loss, supports transparent backgrounds. Best for logos, screenshots, and graphics with text. JPG is lossy — smaller file size but some quality loss. Best for photographs and natural images where transparency isn't needed. WebP is Google's modern format — 25-35% smaller than JPG at the same quality, supports transparency like PNG, and is supported by all modern browsers. WebP is recommended for websites in 2024.

Yes! Upload up to 5 images at once. All images will be resized to the same dimensions using your selected settings. After resizing, download each image individually or click "Download All as ZIP" to get all resized images in a single ZIP file. The batch resize applies the same width, height, format, and quality settings to all uploaded images.