Browser tool

Reduce Image Size

Reduce image file size by target KB, quality, or dimensions, with a clear before and after report. Everything runs in your browser.

Size, reported clearlyReduce by a target size in KB, by quality, or by dimensions. Every run shows original size, output size, dimensions, and percent saved.

Use tool

Drop your file here

or click to browse, or press Enter, drag and drop supported

Compression modeQuality

Target size (KB)

Used only in Target file size mode. The tool lowers quality, then dimensions if needed, to approach this size.

Output format

Same as input keeps JPG, PNG, or WebP. HEIC, TIFF, and SVG inputs are saved as JPG.

Resize

Max width (px)Max height (px)

Scale (%)

Used only in Scale by percent mode. Compression never enlarges an image; values above 100 are capped.

Background for JPG

JPG has no transparency. Transparent areas are filled with this color. Ignored when the output is PNG or WebP.

Choose a file to begin.

File: —
Output: —

Result will appear here.

How this tool works

What it does

Reduces image file size through quality, a target size in KB, or smaller dimensions, and reports exactly how much was saved. It keeps your format unless you convert.

Before and after

The result panel shows original size, output size, percent saved, original and output dimensions, and the output format, so you can see the effect of each setting.

Privacy

Images are processed on your device with no upload, and re-encoding strips EXIF and GPS metadata. Your files are never sent to imgtoolsbase or any other server.

Reduce Image Size in your browser

Reduce Image Size is a broad tool for making any image smaller, with a focus on showing you the result. It works privately in your browser and reports the before and after on every run.

Reduce by quality, set a target size in KB, or limit dimensions. Keep your original format with Same as input, or convert to JPG, PNG, or WebP when that helps.

How to use Reduce Image Size

Drop in any image, or click the upload box to choose a file.
Choose to reduce by quality, by Target file size in KB, or by dimensions.
Optionally change the output format or set a background for JPG.
Click Process, read the before and after report, then click Download.

Why use this tool

Three ways to reduce

Lower quality, aim for a target size in KB, or shrink dimensions, in whatever combination you need.

Clear size report

See original size, output size, percent saved, and dimensions after every run.

Keep or convert format

Default is Same as input. Convert to JPG, PNG, or WebP when a different format is smaller.

Private by design

All processing happens in your browser, so images are never uploaded.

Common uses for Reduce Image Size

General size reduction

Make any image smaller for the web, email, or storage.

Upload limits

Work toward a KB cap with target mode and the size report.

Dimension limits

Resize to a maximum width, height, or percentage.

Comparing settings

Use the before and after numbers to tune quality and size.

Frequently asked questions

What does the before and after report show?

It shows original size, output size, percent saved, original and output dimensions, and the output format for each run.

How do I reduce to a target size?

Switch to Target file size, enter a KB value, and the tool lowers quality and dimensions as needed to approach it, then reports the achieved size.

Can I keep my original format?

Yes. The default is Same as input. You can convert to JPG, PNG, or WebP if that gives a smaller file.

Is EXIF and GPS data removed?

Yes. Re-encoding strips EXIF, GPS, and color-profile data, and the result panel notes this.

Does the image stay on my device?

Yes. The image is processed in your browser and is never uploaded, so it stays on your device.

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