Resize Images
Resize one or more images by percentage, width, height, a maximum box or an exact size — entirely in your browser.
- No upload — processed on this device
- No account needed
- Free to use
Keep going
The natural next step
The details
How it works and what to expect
How it works
- Add the images you want to resize.
- Choose a resize mode and enter the target size. The aspect ratio is kept unless you pick an exact size.
- Click Resize. Each file is delivered individually or packed into a ZIP.
Resize modes
- Percentage — scale both dimensions by the same amount.
- By width / by height — fix one edge and keep the ratio.
- Fit inside — shrink to fit within a maximum box without enlarging (unless you allow it).
- Exact size — force an exact width and height; may stretch out of shape.
Limits
- Sizes are capped at 16,384 px per edge, percentages at 1–1000.
- Per-file limit of 100 MB.
- Very large sources are decoded at a safe maximum of 8192 px per edge.
Privacy
Resizing runs entirely in your browser. Your images are not uploaded to any server, and the resized files are produced on this device.
Practical guidance
Using this tool well
When it is the right answer, what tends to go wrong, and what to check before you rely on the result.
Why use it
Most upload requirements are stated in pixels, and pixel count is the single biggest lever on file size. Resizing to the exact dimensions asked for avoids both rejection and needless weight.
Typical situations
- A portal asks for 1200 × 1200 px and your photo is 4032 × 3024.
- A photo is sharp enough but far larger than the display size needs.
- You need one image at several sizes for different slots.
Common problems
The result is blurry
The image was enlarged beyond its real detail. Downscaling cannot be undone by upscaling — start from a higher-resolution original.
Aspect ratio changed and the subject stretched
Entering independent width and height reshapes the image. Use percentage, single-side or box modes to preserve the ratio, or crop first.
Small dimensions but still a big file
Size also depends on encoding and detail. Follow resizing with compression if the byte limit is still not met.
Check before you submit
- Confirm the output dimensions match the requirement exactly.
- View at 100% and look for softness or jaggies introduced by enlargement.
- Re-check the file size after resizing.
Read next
Guides and reference
The reading that goes with this tool — a walkthrough of the job, and the terms it uses.
- How to reduce an image to a specific KB size without making it unusableUpload forms often accept a narrow byte range, not a pixel size. Here is what actually controls file size, and a reliable order of changes to try.
- How image dimensions affect file sizePixels, quality and format each push file size in a different direction. Understanding which one dominates saves a lot of guesswork.
- How to avoid stretched or distorted photosAspect ratio is the reason a photo ends up squashed. What the ratio means, why forms break it, and the two legitimate ways to hit an exact size.
- How to check an image's dimensions before submittingTwo minutes of verification prevents most rejections. What to check, which tools read it, and what the numbers should tell you.
- Pixels, DPI and physical print size, explainedDPI is not a quality setting — it is the conversion factor between pixels and millimetres. Understanding that one relationship resolves most confusion about print sharpness.
- How to prepare images for printingPrint has requirements screen work never surfaces: physical size, density, colour, bleed and paper. A checklist that runs in the right order.
Terms used on this page
Defined in the site glossary, with the practical context that matters here.
Guided
This tool inside a workflow
A ready-made sequence that solves a whole job — this tool is one step in it.