The Best Free Online Tools in 2026

140+ free online tools — Compress PDF, Remove Background, Image Upscaler, Resume Builder, QR Code Generator, AI Writing Tools, and more. No signup required. Runs in your browser.

Popular Tools

ChatGPT Prompt Generator

Generate structured, high-performing ChatGPT prompts online free. Build role, context, task instructions, and format rules for GPT-4o.
Sharpen Image

Sharpen blurry photos and enhance image detail online for free. Adjust unsharp mask intensity, radius, and strength with 100% private browser processing.
AI Prompt Improver

Transform basic ChatGPT & Claude text prompts into structured system prompts with role, context, constraints, and output format rules.
Prompt to JSON Converter

Convert freeform text instructions into valid JSON schema prompts for OpenAI Function Calling & Structured Outputs.
AI Prompt Optimizer

Optimize token usage and remove redundant fluff from prompts for GPT-4o, Claude 3.5 Sonnet, and Gemini 1.5 Pro.
Prompt Token Counter

Calculate exact BPE token count and estimated API cost for OpenAI GPT-4o, Claude 3.5, and Llama 3.
.env File Generator

Generate secure, formatted .env environment variable files with random JWT secrets, database connection strings, and API keys.
Docker Compose Generator

Visual generator for docker-compose.yml files. Configure PostgreSQL, Redis, Nginx, Node.js, and Python services with environment ports.
Gitignore Generator

Generate customized .gitignore files for Node.js, Python, Go, Rust, React, Next.js, and macOS/Windows system files.
README Generator

Create professional GitHub & GitLab README.md files with tech stack badges, license notices, installation steps, and shields.io tags.
SQL Query Builder

Visual query builder for SQL SELECT, INSERT, UPDATE, and DELETE statements with JOIN clauses and WHERE filters.
JWT Inspector & Decoder

Decode and inspect JSON Web Token (JWT) header, payload claims, expiration timestamps, and signature algorithms safely in your browser.