Crop Image
Crop images using common or custom aspect ratios.
Open toolLoading page…
Resize batches by dimensions while preserving aspect ratio.
Your file stays in this browser.
JPG, PNG, WEBP · maximum 25 MB per file
Focus this area, then paste with Ctrl/⌘+VCrop images using common or custom aspect ratios.
Open toolRotate or flip an image without uploading it.
Open toolRe-encode images without EXIF and unnecessary metadata.
Open toolArrange multiple photos into a polished downloadable grid.
Open toolResize images by width or height while preserving their aspect ratio and optionally preventing upscaling.
Reducing pixel dimensions is one of the most effective ways to lower image size. Keeping the aspect ratio prevents stretching and no-upscale mode avoids inventing pixels.
Resizing is the simplest way to make an image fit a profile slot, a product grid or an upload limit, but it is also easy to stretch faces or blur a logo. This guide explains how MyFileNest's Image Resizer keeps proportions correct, how to pick target dimensions, and why enlarging rarely helps.
With the aspect ratio locked, you can enter just a width or just a height and the other value is calculated from the original proportions. If you enter both, Fit inside dimensions treats them as a maximum box: the image is scaled until it fits within both, without stretching or cropping. That is why a 4:3 photo resized into a 1,000 × 1,000 box comes out 1,000 × 750.
Do not enlarge smaller images is on by default. When a source is already smaller than the target, it is left at its original size instead of being blown up and blurred. Output can be JPG, PNG or WebP; with PNG and a transparent background, clear areas of the source stay transparent.
Platforms change their recommendations occasionally, so treat these widely used sizes as a starting point and check the platform's help page for the latest guidance.
| Use | Pixels | Shape |
|---|---|---|
| Instagram square post | 1080 × 1080 | 1:1 |
| Instagram portrait post | 1080 × 1350 | 4:5 |
| YouTube thumbnail | 1280 × 720 | 16:9 |
| LinkedIn profile banner | 1584 × 396 | 4:1 |
| Full-width website image | 1920 wide | Varies |
| Email body image | 600–1200 wide | Varies |
Resizing cannot change an image's shape without distorting it. If a 3:2 landscape photo must become a 1:1 square, you have two honest options: crop part of the picture away with Crop Image, choosing which part of the scene to keep, or fit it inside the square and accept empty space around it. Stretching it to fill the square is what makes people look wider or taller than they are, which is why the resizer keeps the ratio locked unless you ask otherwise.
An estate agent receives 40 listing photos at 6,000 × 4,000 pixels from a professional camera. The listings portal displays images at up to 1,600 pixels wide and rejects files over 2 MB. Selecting all 40, entering a width of 1,600 with the ratio locked and choosing JPG produces 1,600 × 1,067 images. The proportions are untouched, so rooms look the way they really are, and at that size each file falls comfortably under the limit.
Using the downloadable sample on this page, a 960 × 640 image with a locked width of 480 becomes 480 × 320; the round subject stays perfectly round, which is a quick way to confirm proportions were preserved.
Enlarging spreads the existing pixels over a bigger area. The software has to invent the pixels in between, so edges soften and small text blurs. If an image is too small for its purpose, the best fix is to find a larger original. For modest enlargements of photos where a little softness is acceptable, Image Upscaler is designed for that job; for logos and icons, ask for a vector (SVG) version, which scales to any size without loss.
Pixel dimensions decide how an image looks on screen. For print, what matters is how many pixels are spread across each inch of paper. At the commonly recommended 300 pixels per inch, a 6 × 4 inch photo needs 1,800 × 1,200 pixels. Print Size Calculator works this out for any size, and Change Image DPI updates the stored DPI value without altering the pixels.
Does resizing reduce quality? Making an image smaller keeps it sharp at its new size; making it larger softens it. Saving as JPG or WebP also applies lossy compression, so choose PNG if you need an exact lossless copy.
Can I resize by percentage? Enter a width equal to the percentage of the original, for example 50% of 3,000 pixels is 1,500, and keep the ratio locked.
Are my images uploaded? No. Resizing happens in your browser tab.
A new JPG, PNG or WebP at the selected pixel dimensions. A width-only resize calculates height from the source ratio; choosing PNG with a transparent background retains clear pixels.
For the original 960 × 640 sample, a locked width of 480 gives a height of 320. The round subject should stay round and the full picture should remain visible. This checks proportions, not image-quality improvement.
Fit inside dimensions preserves the source ratio, so a two-dimension box sets maximum bounds. Enter one dimension for a proportional resize, or select an appropriate crop behavior when both dimensions must match. Check whether Do not enlarge smaller images limits the requested size.
The file is processed on this device and is not uploaded to MyFileNest. Closing or refreshing the page clears the active session.
Practical limit: Files up to 25 MB are accepted for guests. Very large dimensions, complex documents or limited device memory can affect browser processing.