Resize Image - Exact Pixel Size Online Free
Change image dimensions by pixels or percent
Resize images online by percentage or exact pixel dimensions. Scale photos down for the web or set precise widths for thumbnails and banners, with an optional aspect-ratio lock to avoid distortion. Free, fast, and processed locally in your browser.
100 MB max per file
Drag & drop your files here
or browse from your device
Image file · up to 100 MB each
Options
Used when resizing by percentage
Used when resizing by exact size
Used when resizing by exact size
100% FreeNo SignupFiles Never Leave Your Device
How to use this tool
Step 1: Upload your file
Drag & drop your file or click to browse. Files are processed locally in your browser and never uploaded.
Step 2: Adjust & process
Choose your settings and run the tool with one click.
Step 3: Download the result
Download your file instantly. Free forever, no signup, no watermark.
Why 123ToolKit?
| 123ToolKit | Typical online tools |
|---|---|
| Runs in your browser — files never uploaded | Uploads your files to cloud servers |
| Free forever | File size limits |
| No signup | Account required |
Resize Image — FAQ
Upload your image, type the exact width and height in pixels, and download. The tool runs entirely in your browser.
Yes, free forever with no signup, no watermarks, and no limits.
Yes. The tool scales your image in the browser and keeps it sharp at the new dimensions.
JPG, PNG, WebP, and other common formats are all supported.
You can lock the aspect ratio so the image never looks stretched, or set width and height independently.
Yes. Use Exact size mode and type the pixel width and height your platform asks for, such as a square profile picture or a wide website banner. Keep the aspect ratio locked if you only know one dimension, and the other side is calculated automatically without stretching.
Percentage mode scales the whole image up or down proportionally, which is fast when you simply need a smaller version. Exact size mode targets precise pixel dimensions for uploads, forms and templates. Both modes run in your browser, and the aspect ratio lock prevents distortion in either case.
Enlarging cannot invent detail that was never captured, so scaling far beyond the original dimensions usually looks soft. Start from the largest source file you have and stay close to its native size. Shrinking an image, by contrast, normally stays sharp and is the safest direction.
Pixel dimensions and file weight are related but not identical. A PNG with many colors can stay heavy even at smaller dimensions, while JPG compression affects weight more directly. For the smallest result, resize first and then run the image through a compressor as a second step.
You can work with image files up to 100 MB each, and there is no signup or daily quota. Because resizing happens entirely in your browser, very large photos also depend on your device memory. Your original file stays untouched on your device until you download the resized copy.
Related tools
Crop Image - Crop to 1:1, 4:3, 16:9 or custom sizeUse this free tool to crop image to any custom aspect ratio online. Drag the crop box in your browser — no signup, no watermarks, files stay private.Compress Image - Shrink JPG, PNG and WebP file sizeCompress image to 20KB, 50KB, 100KB free online. Shrink JPG, PNG, and WebP without losing quality. Runs right in your browser, no signup needed.Convert Image - Convert between JPG, PNG and WebPConvert between jpg png webp online free. Switch image formats while keeping quality, right in your browser. Fast, private, no signup needed.Image Splitter - Cut images into tiles for Instagram gridsUse this free tool to split image into equal tiles online. Pick rows and columns in your browser — no signup; files never leave your device.Rotate & Flip Image - Rotate 90° or flip horizontally/verticallyUse this free tool to rotate image 90, 180, 270 and flip online. Runs in your browser with no signup; files never leave your device, quality kept.SVG to PNG - Convert SVG graphics to PNG imagesConvert SVG to PNG online free with transparent background. Export vector graphics at 1x, 2x or 4x scale in your browser. No signup, sharp results.Collage Maker - Combine photos into a photo collageMake a photo collage online free. Combine up to 9 photos in a grid or strip layout with custom gaps. Download as JPG or PNG, no signup needed.Add Watermark - Stamp text onto your imagesUse this free tool to add text or logo watermark to images online. Position it anywhere in your browser — no signup; files never leave your device.