Overview
Every upload box on the internet seems to want a different rectangle, and 'close enough' gets your image rejected or awkwardly cropped. This tool gives you the exact pixels the destination asked for: type any width and height, and your browser redraws the image at precisely that size. What you see in the dimension readout is what the file will be.
An aspect-ratio lock keeps proportions honest — change one side and the other follows, so nothing arrives stretched. Presets cover the web's favourite rectangles in one click, and you choose PNG for crisp graphics or JPEG for photographs on the way out. The original stays exactly as it was; resizing always creates a new copy.
What does resizing actually do?
It redraws the image on a new grid of pixels. Going smaller, the tool samples the original and averages detail down — this usually looks great. Going bigger, it has to invent pixels between the real ones by interpolation, which is why enlarging a tiny image looks soft: no new detail exists, only educated guesses.
That asymmetry is worth knowing: shrinking is safe, enlarging is a compromise. The tool is honest about both. It shows the source dimensions the moment your image loads, previews the resulting size before you download, and never pretends an upscale created detail that was not there.
Features
- Exact pixel control — type any width and height, down to the single pixel.
- True dimensions shown the moment your image loads, so you work from facts.
- Aspect-ratio lock — change one side and the other follows; nothing stretches by accident.
- One-click presets: 1920×1080, 1280×720, 800×600 and 512×512.
- PNG or JPEG output — lossless PNG for graphics, JPEG for photographs.
- Size preview — resulting dimensions and estimated file size before you download.
- Original untouched — resizing creates a new copy; the source file is never modified.
Benefits
- Pass every upload check. Exact dimensions mean no more rejected images.
- No accidental stretching. The ratio lock protects proportions automatically.
- Decide before downloading. Preview dimensions and size first.
- Private. Everything happens on your device; nothing is uploaded.
Who can use it
Sellers preparing marketplace photos at required sizes. Bloggers fitting images to theme dimensions. Job seekers and students meeting portal photo requirements. Social media managers cutting graphics to each platform's spec. Developers generating asset sizes for responsive layouts — run through the set one by one.
How to use
- Drop your image onto the page or click to browse.
- Read the true dimensions shown — that is your starting point.
- Type the target width and height, or hit a preset; keep the ratio lock on unless you mean to stretch.
- Choose PNG or JPEG output and check the preview numbers.
- Download the resized copy — your original is untouched.
Frequently asked questions
Will resizing make my photo blurry?
Shrinking almost never does — downsampling averages detail cleanly. Enlarging is the risky direction: the tool must invent pixels, so big upscales look soft. As a rule, resize down freely, and avoid more than doubling dimensions upward unless softness is acceptable.
What does the aspect-ratio lock do?
It keeps width and height proportional. With the lock on, typing a new width automatically computes the matching height, so circles stay circular and faces stay natural. Turn it off only when you deliberately want a different shape — usually with a crop, not a stretch.
Can I make a small image bigger?
Yes, but know what you are getting: interpolation, not new detail. A modest upscale (1.5–2x) is usually fine for screens; beyond that, expect softness. For print or close inspection, start from a larger original instead.
PNG or JPEG — which should I pick?
PNG for graphics with sharp edges and text — logos, screenshots, diagrams — where JPEG's artefacts would show. JPEG for photographs, where its perceptual compression shines and files stay small. When in doubt about a photo, JPEG.
What are the presets for?
The sizes the web asks for most: 1920×1080 and 1280×720 for full-HD content, 800×600 as a classic standard, 512×512 for icons and avatars. One click instead of typing.
Does resizing change my original file?
No. The tool reads your image and draws a brand-new copy at the new size. Your source file is never written to, modified or uploaded — it stays exactly as it was.
Conclusion
Right size, right format, no surprises. Type the dimensions the destination asked for, keep the ratio lock on, preview the result — and stop fighting upload boxes.