Utilumo

Fast browser utilities.

Everything runs locally in your browser. No login. No uploads. Privacy-first.

Runs locally

Privacy-first

No login

Instant access

Popular

Popular tools.

Frequent utilities for quick browser-only work.

JSON FormatterFormat, validate, and sort JSON locally.Open tool Image CompressorCompress JPG, PNG, and WebP locally.Open tool Pixel FacePixelate faces and license plates locally.Open tool Merge PDFCombine PDF files and page ranges.Open tool Word CounterCount words and reading time locally.Open tool UUID GeneratorGenerate UUIDs locally.Open tool

Privacy spotlight

Image privacy tools that stay local.

Redact faces, license plates, screenshots, and image metadata directly in your browser before sharing.

Pixel FacePixelate faces and license plates locally.Open tool Blur FacesBlur faces and license plates locally.Open tool Remove EXIFRemove image metadata locally.Open tool

Choose a category.

Browse by the kind of problem you are trying to solve.

Available

View all tools12 categories

Images26 toolsCompress, convert, resize, clean, and protect images locally.View category PDF10 toolsMerge, split, rotate, and prepare PDFs with less friction.View category Developer63 toolsFormat, validate, decode, generate, and inspect data.View category Text30 toolsCount, clean, compare, convert, and reshape writing.View category Calculator13 toolsFast everyday calculators for work, money, dates, and ratios.View category Privacy Tools18 toolsHide sensitive details and remove metadata before sharing.View category Browser22 toolsInspect URLs, sessions, viewport details, and browser data safely.View category AI26 toolsClean, count, split, and validate AI workflow data locally.View category Audio18 toolsConvert, edit, and analyze audio locally in the browser.View category Video8 toolsCut, split, loop, mute, transform, compress, and convert videos locally in your browser where supported.View category Creator45 toolsPrepare titles, thumbnails, descriptions, captions, and social image exports.View category Productivity4 toolsTimers, planning helpers, and lightweight work utilities.View category

Trending

Trending now.

Useful tools for common privacy, image, and developer tasks.

Blur FacesBlur faces and license plates locally.Remove EXIFRemove image metadata locally.JSON FormatterFormat, validate, and sort JSON locally.Image CompressorCompress JPG, PNG, and WebP locally.

Recently added

Recently added.

The latest additions to your browser toolbox.

New

Invisible Character Inspector

Find hidden characters and preview removal.

Open tool New

QR Code Reader

Read a QR image before opening its link.

Open tool New

robots.txt Tester

See which robots.txt rule matches a URL.

Open tool New

Prompt Injection Scanner

Scan prompt-injection signals locally.

Open tool

Learn + Reference

Learn and reference.

Short guides and lookup pages connected to Utilumo tools.

Latest LearnView all

TutorialHow to test robots.txt rules for a URL ExplainerWhat is a robots.txt file?GuideHow to find and remove invisible characters

Quick ReferenceView all

26 entriesrobots.txt matching reference 19 entriesInvisible Unicode characters 13 entriesQR code payloads reference

Why Utilumo

Serious defaults.

Local-first tools with no account wall and no unnecessary uploads.

Fast

Open a tool, solve the small problem, move on.

Private

Local-first workflows reduce unnecessary exposure.

No login

No account wall between you and a quick utility.

Browser only

Interactive tools keep work in the tab whenever possible.