+ kitlumo

New: File Converter

Convert files locally — including Word and Excel.

Images, whole PDFs, Word DOCX, Excel XLSX, text, code, CSV and JSON stay on your device. KitLumo never receives or stores a copy.

PDF · Word · Excel · Images

Free online utilities

Free online image tools.

Straightforward tools that work right here on your phone, tablet or computer. No account, no AI, no nonsense.

Your tool data stays on this device. Anything you type, paste, calculate or open in a tool is not sent to us. KitLumo does not receive it or save a copy.
141 free tools Browser-first No account

KitLumo Image tools

Prepare an image for its real destination

Image tools solve different problems. Resize when the pixel dimensions are wrong, crop when the composition needs a different shape, and compress when the file is too large. Converting formats can also affect transparency, metadata and quality.

The current image tools process files in the browser on your device. Downloaded copies should be opened and checked at the size where they will actually be used before you replace an original.

How to resize an image Browse all image tools

Browse by category

Practical guides

Understand the result, not just the number.

Short, plain-language guides explain the assumptions, privacy and limits behind the most important KitLumo tools.

View all guides
PDF to WordWhat text reflow preserves PDF to ExcelHow pages become worksheets Mortgage paymentsWhat the estimate includes Percentage changeWhich formula answers the question Unit conversionHow to check measurements Calculator checklistHow to check a result

Available now

Useful from the first click

4 tools

⇄

Images

Universal File Converter

Convert images, whole PDFs, Word DOCX, Excel XLSX, text, CSV and JSON on your device.

Open →
▧

Images

Image Resizer

Resize JPG, PNG and WebP images on your own device.

Open →
↓KB
New

Images

Image Compressor

Reduce JPG or WebP file size locally with a quality control.

Open →
✂
New

Image

Image Cropper

Crop an image in your browser and download a PNG copy.

Open →

Tool workspace

Word Counter

Help shape KitLumo

Don’t see what you need?

Tell us the task you are trying to solve. The most-requested tools guide what we build next.

How KitLumo stays free

Supported by ads. Helped by people.

Clearly labelled ads fund the website so everyone can use every tool for free. If KitLumo saves you time, you are also welcome to make an optional donation to help pay for hosting and keep the tools available.

Donating never unlocks extra features. Every tool remains free for everyone.
Donations are not enabled right now.

How it works

Free means free.

KitLumo is built around small, focused utilities. No login walls, no artificial limits and no AI layer where a reliable tool will do.

Every tool currently available works directly on the phone, tablet or computer you are using. Anything you type, paste, calculate or open in a tool is not sent to us, and KitLumo does not save a copy.

Your saved and recently used tool shortcuts are stored only in your browser on this device. When you use “Report a problem” or “Request a free tool,” only that message and any email address you choose to add are sent to KitLumo.

Help shape KitLumo

Request a tool