ONTOOLS

Tools

Image Tools
Resize, crop, compress, convert, rotate, and watermark images.
PDF Tools
Create PDFs from images and handle simple PDF tasks.
Text Tools
Clean, format, and generate text for content and design.
Developer Tools
JSON, CSV, timestamps, regex, and code utilities.
Security & Utility
Passwords, hashes, QR codes, and color utilities.

All Tools

Image Resizer
Resize images to any size — no uploads.
Image Compressor
Reduce image file size while keeping quality.
Image Cropper
Crop images by selecting an area.
Rotate / Flip Image
Rotate and flip images quickly.
Add Watermark
Add a text watermark to images in your browser.
PNG to JPG
Convert PNG images to JPG instantly.
JPG to PNG
Convert JPG images to PNG instantly.
Convert to WEBP
Convert images to WEBP for smaller sizes.
WEBP Converter
Convert WEBP to JPG/PNG quickly.
Image to PDF
Combine one or more images into a single PDF.
Text Case Converter
UPPER/lower/Title/Sentence case conversions.
Lorem Ipsum Generator
Generate placeholder text for layouts and mockups.
JSON Formatter
Format, validate, and minify JSON.
JSON to CSV
Convert JSON arrays of objects into CSV.
Timestamp Converter
Convert Unix timestamps ↔ ISO and local/UTC time.
Regex Tester
Test regex matches and replacement output.
URL Encoder/Decoder
Encode/decode URL parameters safely.
Base64 Encode/Decode
Convert text to Base64 and back.
UUID Generator
Generate multiple UUIDs quickly.
Code Beautifier
Beautify HTML/CSS/JS (basic).
Password Generator
Generate strong random passwords securely.
Hash Generator
Generate MD5 / SHA-1 / SHA-256 hashes.
QR Code Generator
Create QR codes from text or URLs.
Color Picker
Pick colors and get HEX/RGB values.
HEX ↔ RGB Converter
Convert HEX and RGB instantly with preview.

Welcome to OnTools — a fast, privacy-friendly collection of online tools for everyday work. Here you’ll find simple utilities for images, PDFs, text, developer tasks, and security helpers — all organized by category so you can get results quickly without installing heavy software.

Most tools are designed to run directly in your browser, which means you can resize images, format data, generate passwords, or convert files with minimal steps. Our focus is speed, clarity, and usability on both desktop and mobile. Whether you’re preparing content for a website, optimizing images for performance, converting data formats, or handling quick technical tasks, OnTools helps you finish the job in seconds.

Browse categories below to find the right tool. If you’re not sure where to start, check the most popular tools, or search by keyword. Each tool page includes a short guide, common use cases, and notes on privacy and best practices.

How it works

FAQ