ResizeImage.io is a free online image resizer that lets you resize images by exact pixels, percentage, cm, mm, inches, DPI, or target file size. Resize one photo or hundreds in bulk and export optimized JPG, PNG, WebP, TIFF and GIF files in seconds. Everything runs directly in your browser, so your pictures never upload to any server. Preparing files... Drag & Drop Image files here Supported Files : JPG, PNG, WEBP, GIF, TIFF. You can also click to select files. How to Resize an Image Online? Why Use This Image Resizer? Resize images online with precise size control, bulk processing, 100% secure and private browser-based editing, and fast exports. Bulk Image Resizer Resize and compress images in bulk - hundreds at a time - and download everything as a single ZIP. Lossy and lossless modes keep files small and sharp. Resize by Pixels, CM, MM, or Inches Set exact pixel dimensions , or work in physical units with the cm image resizer and inch image resizer - with full DPI support for print-ready output. Resize to an Exact File Size Need a file under a limit? Hit precise targets like 20 KB, 100 KB, or 1 MB for forms, portals, and email - or simply reduce image size in KB automatically. Resize and Convert Between all Major Formats Use the built-in image converter to switch between JPG, PNG, WebP and TIFF, convert iPhone HEIC photos , or modern AVIF files - no watermarks. Free, Private & No Sign-Up No login, no registration, and no watermarks. Every image is resized locally in your browser and is never uploaded, so your photos stay 100% private. Frequently Asked Questions Is there a file-size limit for resizing or compressing images? Is there a file-size limit for resizing or compressing images? There are no strict upload limits but images under 100MB are preferref for the best resizing and compression experience. Images are processed directly on your device, so even very large, high-resolution photos work fine. For the smoothest experience with huge files, keep other browser tabs to a minimum. How many images can I compress at once? How many images can I compress at once? There is no fixed cap but the recommended number would be under 20. Bulk jobs are only limited by your device's memory. For the fastest results with large batches, run ResizeImage.io in one browser window with minimal other tabs open. How many images can I resize at once? How many images can I resize at once? For best performance we recommend batches of up to 20 at a time - download each batch as a ZIP, then start the next. Can I resize and compress images at the same time? Can I resize and compress images at the same time? Yes. Every photo can be resized to your target dimensions and compressed to your target file size in a single pass - the fastest way to prepare images for uploads, forms, and submissions. Are my images uploaded or stored anywhere? Are my images uploaded or stored anywhere?

Never. All processing happens locally in your browser on your own device - your images never reach our servers, so there is nothing to store, share, or delete. That is also why the tool is fast: there is no upload or download queue. What resize options does this tool provide? What resize options does this tool provide? Resize by exact pixels, by percentage, or in physical units with the cm image resizer and inch image resizer (DPI supported).There are also format-specific tools - JPG resizer , PNG resizer , WebP resizer and TIFF resizer . Does this website also provide image converters? Does this website also provide image converters? Yes - WebP to PNG , PNG to JPG , WebP to JPG , JPG to WebP , PNG to WebP , TIFF to JPG , TIFF to PNG , and JPG to PNG , plus HEIC and AVIF converters and even file-size converters like MB to KB and KB to MB . What compression options are available on this website? What compression options are available on this website? Automatic smart compression, quality-percentage control, and exact target sizes: 20 KB, 15 KB, 100 KB(ideal for blog and web images) , 200 KB , 500 KB , 1 MB and 2 MB , plus a general target KB resizer . How do I resize an image without losing quality? How do I resize an image without losing quality? Automatic compression preserves the best quality without you worrying about quality loss. For manual compression try to keep compression under 90%. How do I resize a photo to 2x2 inches for a passport photo? How do I resize a photo to 2x2 inches for a passport photo? Open the 2x2 inch photo resizer , add your photo, and it is sized to the exact US passport specification at print-ready DPI. For most other countries' ID and visa photos, use the 35x45 mm resizer . How do I resize an image for a YouTube banner or thumbnail? How do I resize an image for a YouTube banner or thumbnail? Create a YouTube channel banner at the recommended 2560x1440 pixels, or at least 2048x1152 pixels. For thumbnails, use YouTube thumbnail maker for 1280x720 thumbnails, and the 1920x1080 resizer for HD stills - each preset locks the correct aspect ratio so nothing important gets cropped. Can I convert iPhone HEIC photos to JPG? Can I convert iPhone HEIC photos to JPG? Yes. The HEIC to JPG converter turns iPhone photos into universally supported JPGs right in your browser, and the HEIC converter can also output PNG, WebP, and TIFF. Nothing to install, and your photos are never uploaded. What is the difference between resizing and compressing an image? What is the difference between resizing and compressing an image? Resizing changes the pixel dimensions of an image (for example, 4000x3000 down to 1920x1080), while compressing shrinks the file size in KB or MB without changing dimensions. Do you also have AI-based tools? Do you also have AI-based tools? Yes. We have a Free Private AI Background Remover (4k with no watermark) and Image Upscaler that processes everything completely locally on your device. There are no server uploads, no sign-ups required, and your images remain 100% private. Can I change an image's shape, not just its size? Can I change an image's shape, not just its size? Yes. Resizing keeps the whole frame; when you need a different aspect ratio — square for a profile picture, 16:9 for a banner — use crop image , square crop , or circle crop . You can also rotate image , or mirror image directly in your browser.