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Free web tools that run right in your browser. No sign-up or install needed. Free web tools. No installation needed.
JSON Formatter
Format JSON data for easier reading.
Word Counter
Count characters, words, sentences, and lines in text.
Image Resizer
Resize image width and height directly in your browser.
PDF Merger
Merge multiple PDF files into one directly in your browser.
BMI Calculator
Calculate body mass index from height and weight.
JPG to PNG Converter
Convert JPG images to PNG directly in your browser.
Password Strength Checker
Check password strength safely in your browser.
My IP Address
Check the public IP address of your current connection.
JSON Validator
Validate JSON syntax directly in your browser.
Whitespace Remover
Clean unnecessary spaces and blank lines in your browser.
Image Cropper
Crop a selected image area directly in your browser.
PDF Splitter
Split a PDF by individual pages or custom ranges in your browser.
Age Calculator
Calculate calendar age from a birth date to a selected date.
PNG to JPG Converter
Convert PNG images to JPG directly in your browser.
Password Breach Checker
Check whether a password appears in public breach data safely.
Base64 Encoder & Decoder
Encode UTF-8 text as Base64 or decode Base64 back to text.
Line Break Remover
Remove line breaks and join text into one line in your browser.
Image Rotator
Rotate PNG, JPEG, and WebP images directly in your browser.
PDF Page Remover
Remove selected pages from a PDF directly in your browser.
Date Difference Calculator
Calculate the elapsed time between two calendar dates.
JPG to PDF Converter
Convert multiple JPG images into one PDF directly in your browser.
JWT Decoder
Decode JWT header and payload directly in your browser.
DNS Lookup
Check DNS records and TTL values for a domain.
URL Encoder & Decoder
Encode or decode URL components directly in your browser.
Duplicate Line Remover
Remove duplicate lines while preserving their first occurrence and order.
Telnet Connection Test Command Generator
Generate Telnet and TCP test commands for an IP address and port on your computer.
Image Compressor
Compress images to JPEG or WebP directly in your browser.
PDF Page Extractor
Extract selected pages from a PDF into a new PDF in your browser.
D-Day Calculator
Calculate days remaining until or elapsed since a target date.
PNG to WebP Converter
Convert PNG images to WebP directly in your browser.
TLS Configuration Checker
Check a domain's TLS 1.2 and TLS 1.3 support and connection details.
QR Code Generator
Create QR codes for text, URLs, Wi-Fi, and more in your browser.
Barcode Generator
Create CODE, EAN, and UPC barcodes in your browser.
Random Number Generator
Generate random integers within a range directly in your browser.
HTTP Header Checker
Check the status and HTTP response headers of a public web URL.
UUID Generator
Generate UUID v1, v4, and v7 values directly in your browser.
Hash Generator
Generate MD5, SHA-1, and SHA-2 hashes for text in your browser.
Case Converter
Convert English text between common letter-case styles.
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See allWhat Utilook offers
Free to use
Use every tool without an account or payment.
No install
Use the tools directly in your browser without installing software.
Safe by design
Where supported, files and inputs are processed in your browser.
Simple workflow
Each tool focuses on the inputs and settings needed for the task.
Tools with clear boundaries
Utilook combines practical browser utilities with enough context to understand the result, choose the right option, and recognize a tool's limits.
Choose by task
Developer, text, image, PDF, calculator, converter, generator, security, and network categories group tools by the work they complete—not by search terms.
Browser first
Files and sensitive inputs stay in the browser whenever the job can be completed locally. A tool page states when a public network lookup requires a server or external service.
Reviewed before release
Released tools are checked for working inputs and results, mobile usability, Korean and English content, privacy behavior, limitations, and independent user value.
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