Image Tools
Resize, filter, convert images, create ICO files, and work with Base64 image data in-browser.
ITools4U.com
Fast, private web tools that run in your browser.
ITools4U.com is a browser-based toolbox for common everyday work: image conversion and resizing, JSON utilities, text parsing, QR codes, network checks, media tools, coding helpers, authentication utilities, and office file tools.
Plan
Free for all users.
ITools4U is free for all users and remains available directly through ITools4U.com.
Toolbox
Useful utilities without installing another desktop app.
Network Tools
Check public IP, website availability, DNS records, and blacklist status from a quick web interface.
JSON & Text Tools
Validate JSON, view structures, compare JSON documents, parse text, preview Markdown, and generate QR codes.
Media, Coding & Office
Use local media players, screen recording, authenticator helpers, password generation, BSON conversion, DOCX editing, and spreadsheet viewing.
Privacy model
Designed for local browser workflows.
ITools4U focuses on quick tools where data can stay on the user device. For supported local tools, files and content are processed in the browser instead of being uploaded to a server.
Best for
- Developers cleaning JSON, text, and encoded data
- Admins checking DNS, IP, availability, and blacklist state
- Users resizing or converting images without installing software
- Quick office, media, password, QR, and authenticator tasks
Articles
Open blog
Latest ITools4U articles.
Password Complexity, Brute Force, and Dictionary Attacks
A practical guide to password complexity, entropy, brute-force attacks, dictionary attacks, and why browser-only password generation is safer for everyday accounts.
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ITools4U.com: Private Browser Tools for Images, JSON, Text, Network, Media and Coding
ITools4U.com is a browser-based toolbox for everyday image, JSON, text, network, media, coding, authentication, and office tasks, with a privacy-first approach that avoids saving user data.
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