Resize an Image
Shrink or enlarge an image to exact dimensions, a percentage or a common preset. High-quality resampling, no upload.
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This resize image tool changes an image's dimensions — to exact pixels, a percentage, or a common preset — with high-quality resampling, entirely in your browser.
Shrink a 6000px camera photo to web size, hit an exact avatar requirement, or scale a batch of screenshots down by half. The output downloads straight from your device.
Why Use This Resize Image Tool?
- Three ways to resize — exact pixels, percentage, or common presets (1080×1080, 1920×1080…)
- Aspect ratio lock — change one side, the other follows
- High-quality resampling — stepped downscaling avoids the mush of a single naive scale
- Private — resized in your browser, never uploaded
- Free, no signup
How to Resize an Image — 3 Steps
- Drop your image into the box above and wait for its current dimensions to appear.
- Choose the mode — preset, percentage or exact pixels — and set the target. Toggle the aspect lock if you need it.
- Press the blue Resize Image button and download the resized file.
Resizing Down Well Is a Technique, Not a Setting
The most common resize — camera photo to web size — is also the one that goes wrong most often. Scaling a 6000×4000 photo straight to 1200px wide in one step produces soft, slightly muddy detail, because the renderer discards pixel information in big jumps. This tool downscales in steps (halving repeatedly until close to the target, then one final precise pass), which preserves sharpness and text legibility noticeably better. It is the difference between a resized photo that looks like the original and one that looks like a photocopy of it.
The three input modes map to the three real jobs. Exact pixels serve platform requirements: a 1080×1080 marketplace listing, a 1200×630 social card, a 256×256 avatar. Percentage serves quick bulk-ish work — everything at 50% keeps relative composition. Presets exist so you do not have to remember that a YouTube thumbnail is 1280×720. The aspect lock ties width to height so a portrait stays a portrait; unlock it only when you deliberately want distortion, which is rarer than people think.
Enlargement is honest but limited: scaling up interpolates, adding pixels between existing ones. 110% for a print fit is invisible; 300% is not. The tool will happily do it, but the FAQ answer to "can you make it bigger without blur" is genuinely no — that requires AI upscaling, which is a different kind of tool.
Output keeps your input format (JPG stays JPG at quality 92, PNG stays PNG with transparency), and the entire operation — decode, resample, save — runs on your device with no upload.
Frequently Asked Questions
Choose the exact-pixels mode, enter 1080 and 1080. With aspect lock on, the tool fits within your numbers; unlock the lock to force both exactly.
Large downscale ratios are done in stepped halves rather than one jump, which preserves detail. It is the same technique pro tools use.
No tool can add real detail that was not captured. Small enlargements (up to ~120%) look fine; large ones will be soft — that is physics, not a setting.
Common web and social sizes: 1920×1080, 1280×720, 1080×1080, 1080×1350, 1200×630, 800×600, 640×480 and 256×256.
Yes — JPG stays JPG, PNG stays PNG with alpha, WebP stays WebP. No format conversion happens during a resize.
No — decoding, resampling and saving all run in your browser.