Private by design.Everything in your browser.

Developer utilities, with no accounts or telemetry.

LocalTools is a curated collection of developer utilities that run entirely in your browser. No accounts. No telemetry. Just reliable tools that respect your workflow and your data.

100% LocalEverything runs in your browser.
Open SourceTransparent by design. Built in the open.
Developer FirstFast, focused, and built for real workflows.
Cross PlatformmacOS, Windows, and Linux.
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TOOLFLOW JOURNEY

Built for developers.Evolving with the community.

Free, ad-free, and account-free. A clean environment to solve technical microtasks without friction or noise.

100% BROWSER · NO UPLOADS · NO ACCOUNT

Files / Media

Convert formats and prepare deliverables in seconds.

Compress images, PDFs, or video without leaving the browser.

Data / Encoding

Validate structures and clean payloads before sending.

Encode and decode values for APIs without mistakes.

Text / Code

Transform content to write faster.

Generate clean, copy-ready outputs for daily work.

Utilities / Visual

Handle daily technical microtasks with less friction.

Validate color, contrast, and gradients with direct controls.

Output / Continuity

Copy or download results ready to share.

Chain steps with no accounts and no uploads.

Data banner

Data

Format, validate, and convert data directly in your browser.

Perfect for cleaning inputs before sending them to APIs.

JSON Formatter & Validator, JSON Prompt Composer, Contrast Checker, Test Colors, ...

Explore Data tools

Web

Debug, inspect, and interact with web services and content without leaving your machine.

Ideal for validating URLs, payloads, and responses.

JSON Formatter & Validator, JSON Prompt Composer, Contrast Checker, Test Colors, ...

Explore Web tools
Web banner
Development banner

Development

Ship better code with helpers that speed up your daily development tasks.

Built for documentation, text transformations, and practical copy-ready snippets.

Data to Markdown, Focus Reader, llms.txt Generator, Text Transformer, ...

Explore Dev tools

Utilities

Small utilities with a big impact on your productivity, every single day.

For those moments when you need a microtask solved in seconds, with no extra software.

Simple Custom Timer, Mesh Gradient Generator, Progressive Blur Effect, Liquid Glass Effect, ...

Explore Utils tools
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EXPLORE SOME TOOLS

Discover. Try. Stay local.

Discover useful tools built for developers.

PRIVATE · RELIABLE · 100% LOCAL

JSON Formatter icon
JSON FormatterFormat and validate JSON instantly. Ideal for API payload debugging.DATA
URL Encoder icon
URL EncoderEncode and decode URLs safely for routes, query strings, and requests.WEB
Text Transformer icon
Text TransformerTransform text in seconds for docs, snippets, and dev workflows.CODE
UUID Generator icon
UUID GeneratorGenerate unique UUID v4 values for databases, tests, and systems.UTILS
Base64 Encoder icon
Base64 EncoderEncode and decode Base64 data quickly for integrations and testing.DATA
Contrast Checker icon
Contrast CheckerValidate WCAG color contrast for accessible and readable interfaces.WEB
QR Generator icon
QR GeneratorGenerate local QR codes and export quickly for links or data sharing.UTILS
Custom Timer icon
Custom TimerSet quick timers for focused work sessions and practical checks.CODE

100% local

Your data never leaves the browser.

No telemetry

No tracking, no analytics, no monitoring.

No accounts

No sign-up and no login required.

Open source & auditable

Transparent code, built in the open.

PRIVACY YOU CAN TRUST

Your data never leaves your browser.

Work with files, text, and data without sending them to external servers.

LocalTools is built on a simple principle: you stay in control. Everything runs in the browser, so there is no backend.

  • 100% local execution
  • No telemetry or tracking
  • No accounts or logins
  • Open source and auditable

COMMUNITY OPEN SOURCE

Built by developers,for developers.

Open community, real feedback, and visible decisions.

LocalTools comes from small tasks that repeat every day: preparing files, reviewing payloads, or validating an interface.

If something breaks or could be clearer, open an issue with real context.

View on GitHub

ROADMAP PLAN

What's coming next

A practical roadmap, with no empty promises.

The priority is adding tools that fit real product usage: more converters, better presets, faster flows, and small improvements that reduce repeated steps.

  • New feature or category
  • Workflow or interface improvement
  • Real-world use case
  • General product feedback
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STAY IN THE LOOP

New tools. No noise.

Clear notices when important versions ship.

The subscription will help you hear about new tools, relevant changes, UX improvements, and release notes when the project has something useful to share.

No spam and no filler emails. Only concrete updates, for people who want to follow the project without checking the repository every week.