Developer & Writer Tools

A curated suite of fast, offline-first client-side utilities. Format code, encrypt strings, convert HEIC photos, and decode web tokens securely inside your browser.

⚡ Explore All Tools 🔄 Convert Files

🔥 Most Popular Utilities

🔐

Password Generator

Generate secure random passwords with custom lengths and character configurations.

📄

JSONifier

Prettify, validate, parse, and auto-heal broken JSON string arrays locally.

📸

HEIC to JPG

Convert Apple's HEIC photos from your iPhone to standard JPG/PNG completely in memory.

🆔

UUID Generator

Generate bulk unique identifiers (v1, v4, and v7 timestamp ordered) instantly.

✍️

Word Counter

Analyze word counts, character frequencies, keyword densities, and reading/speaking times.

📄

Compress PDF

Shrink PDF files locally using structural optimizations or canvas image downsampling.

📲

QR Generator

Design custom vector QR codes with embedded branding logos, custom colors, and SVG export.

🛡️

JWT Decoder

Safely decode JSON Web Tokens, inspect header claims, and verify signatures locally.

View All Tools ➔

🛡️ Safe & Private by Design

🔒

100% Client-Side

Your files and credentials never leave your browser sandbox, keeping your data secure.

⚡

Zero Latency

🆓

Completely Free

Enjoy unlimited tools access with zero signup walls, ads, or cookies limits.

🌓

Dual Themes

Smoothly shifts between elegant Light and dark modes to respect your system setup.

About Toolsner

Toolsner is a catalog of free online tools created to simplify everyday tasks. Here you will find generators, parsers, and assistants for working with text, code, SEO, and web development. We strive to make our service fast, simple, and convenient so that every user can get results in just a few clicks.

FAQ

No, all tools on the Toolsner website are completely free.

Yes, the website is adapted for mobile devices and works in any modern browser.

Yes, we regularly update the catalog and add new generators and utilities.

🎮 New games

Free browser games that run entirely on your device.

🐍 Snake Guide the snake, eat apples and grow longer. Collect golden apples for bonus points. Free, no install, runs in your browser.

🔢 2048 Slide the tiles, merge equal numbers and reach the 2048 tile. Free, no install, runs entirely in your browser.

All games ➔