Image Optimizer
Compress, resize and convert several JPG, PNG or WebP images in one local workflow, with a before-and-after size summary for every file.
Process several images locally. Nothing is uploaded.
Several files · no file-size limit · browser processing
Output size
Output format
Image quality
Dimensions keep their proportions. PNG is lossless; quality affects JPG and WebP.
About this tool
What is Image Optimizer used for?
Image Optimizer is a free online tool built for one focused task: Compress, resize and convert several JPG, PNG or WebP images in one local workflow, with a before-and-after size summary for every file. It runs directly in your browser and presents a readable result without a required account or installation. That makes it useful for a quick check as well as a repeated workflow: prepare a value, test an idea, compare an output and leave with a file or result that is ready to use.
How to use Image Optimizer
To begin, add one or more images, choose an optional maximum width or height, select the output format and quality, then process the batch. Download each optimized result when it is ready. Take a moment to review the visible fields and choose options that match your goal. Clear input produces a result that is easier to understand. If you are working on a public page, a shared document or a code snippet, check the context where the result will be used before publishing or sending it to someone else.
Best practices for this type of tool
It helps prepare an image for a website, document or message while keeping the original file on your device. Compare dimensions, format and file size after each change. The best setting depends on the image: photographs usually benefit from a quality-aware format, while screenshots, interfaces and illustrations may need crisp edges. Keep an untouched original so you can return to it later.
Data and privacy
KeSuite favours local processing: text, values and files entered into this tool stay in the browser whenever the feature allows it. That reduces unnecessary transfers and keeps the workflow quick, including for a first offline check after the page has loaded. Never paste a secret into a tool or device you do not control, and follow your organisation’s privacy rules.
Checks before you publish
Interpret the result from Image Optimizer in the context of your project. A maximum dimension preserves proportions for each image. PNG is lossless, while JPG and WebP use the selected quality; compare the resulting size before replacing an original. When several options are available, compare them instead of automatically choosing the first one. For professional work, keep the original input, record the important setting and validate the result in the final environment: a browser, CMS, terminal or device can render details slightly differently.
Image Optimizer practical tip
For a batch, keep the originals in a separate folder, compare the savings for each visual and publish only files that still look sharp at their real display size.
Frequently asked questions
How do I use Image Optimizer?
Add one or more images, choose an optional maximum width or height, select the output format and quality, then process the batch. Download each optimized result when it is ready.
What should I check before using the result?
A maximum dimension preserves proportions for each image. PNG is lossless, while JPG and WebP use the selected quality; compare the resulting size before replacing an original.
Is an account required?
No. This tool is free and the calculation takes place in your browser.