Images · free tool

Image compressor for JPG, PNG, web pages and email

Reduce JPG or PNG file size and adjust image width before publishing or sharing. Your data stays in your browser whenever the task can be processed locally.

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Image Compressor

Files

Quality Max width

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Good to know

An image compressor reduces file size by adjusting quality, dimensions or encoding while keeping the image usable.

image compressorcompress jpgcompress pngreduce image sizecompress image online

Understand

Understand Image Compressor

What is Image Compressor?

An image compressor reduces file size by adjusting quality, dimensions or encoding while keeping the image usable.

Main use case: Compress images before uploading them to a website, sending by email or creating lighter documents.

Common use cases

Website performance: Prepare lighter visuals for faster pages.
Email attachments: Reduce file size before sending images.
PDF preparation: Compress images before converting them into a document.

How to use the tool

Choose one or more images.
Adjust quality or maximum width.
Process the files.
Download the compressed results.

Best practices

Use realistic test values when validating forms, exports or API payloads.
Keep real customer, banking and production secrets out of public tools.
Check the output format before copying it into a production workflow.
Document whether a value is generated, validated, converted or only estimated.

Common mistakes

Confusing valid format with real-world validity: A generated or locally validated value can match a format without proving that it exists in an official system.
Using real production data: Public utilities are best for test data, demos, fixtures, QA and quick checks, not for confidential values.

Frequently asked questions

Does image compression reduce quality?

Usually yes, but moderate settings can reduce size while keeping the image visually acceptable.

Should I resize images before publishing?

Yes. Serving images at the needed display width improves page speed.

Which formats are supported?

The tool is designed for common browser-supported image formats such as JPG and PNG.

Are my inputs sent to a server?

OnSubmit tools run in the browser whenever the task can be processed locally. Avoid pasting production secrets, real banking details or personal data into public tools.