Fast, Free & Private Web Utilities
25 specialized developer, text, image, calculator, and security utilities that process data 100% locally in your browser. Zero server processing, zero tracking, instant performance.
Type text or numbers for instant word count, character length, & URL slug preview
Image Tools
Compress, resize, convert, crop, and encode images locally in your browser using Canvas and Blob APIs without uploading files.
Image Compressor
Compress JPEG, PNG, and WebP images in your browser with adjustable quality and instant before/after size comparison.
Image Resizer
Resize images to exact pixel dimensions with optional aspect-ratio lock and clean local export.
Image Converter
Convert images between PNG, JPEG, and WebP formats in your browser with transparency handling.
Image Cropper
Crop images interactively or by preset aspect ratios (1:1, 16:9, 4:3, freeform) and download the cropped region.
Image to Base64
Encode images into Base64 Data URLs or raw Base64 strings for inline HTML, CSS, and JSON payloads.
Developer Tools
Format and validate JSON, encode/decode Base64 and URLs, and generate RFC-compliant UUIDs with instant client-side feedback.
JSON Formatter
Pretty-print or minify JSON with configurable indentation (2 spaces, 4 spaces, or tabs) and exact syntax error diagnostics.
JSON Validator
Validate JSON syntax against RFC 8259, pinpoint parse error locations, and inspect root type and key metrics.
Base64 Encoder / Decoder
Encode and decode UTF-8 text to and from standard or URL-safe Base64 without mangling multi-byte Unicode characters.
UUID Generator
Generate cryptographically random RFC 4122 v4 UUIDs in bulk with uppercase, hyphenless, and brace formatting options.
URL Encoder / Decoder
Percent-encode and decode URL query components or full URIs with safe handling of malformed percent sequences.
Text Utilities
Count words and reading time, convert letter case, remove duplicate lines, compare text diffs, and generate clean placeholder copy.
Word Counter
Count words, characters (with and without spaces), sentences, lines, paragraphs, and estimated reading/speaking time.
Case Converter
Convert text between UPPERCASE, lowercase, Title Case, Sentence case, camelCase, PascalCase, snake_case, and kebab-case.
Remove Duplicate Lines
Deduplicate lists line-by-line while preserving original order, with toggles for case sensitivity, whitespace trimming, and empty lines.
Text Diff Checker
Compare two blocks of text line-by-line with accessible visual markers for added, removed, and unchanged lines.
Lorem Ipsum Generator
Generate bounded paragraphs, sentences, or words of classic placeholder text for wireframes and layout testing.
Everyday Calculators
Calculate percentages, chronological age, BMI, date differences, and unit conversions with transparent formulas.
Percentage Calculator
Solve three everyday percentage problems: X% of Y, X is what % of Y, and percentage increase/decrease from X to Y.
Age Calculator
Calculate exact chronological age in years, months, and days between a birth date and any target date.
BMI Calculator
Calculate Body Mass Index (BMI) using Metric (kg/cm) or Imperial (lb/ft/in) units with WHO adult reference ranges.
Date Difference Calculator
Calculate the exact duration between two calendar dates in years, months, days, weeks, and business days.
Unit Converter
Convert between common Length, Weight/Mass, and Temperature units with exact conversion factors and formulas.
Security & Converters
Generate CSPRNG passwords, compute SHA-256 hashes, create downloadable QR codes, convert HEX/RGB/HSL colors, and inspect Unix timestamps.
Password Generator
Generate high-entropy random passwords in your browser using Web Crypto CSPRNG with customizable length and character sets.
SHA-256 Hash Generator
Compute cryptographic SHA-256 digests of UTF-8 text in your browser using SubtleCrypto (`crypto.subtle.digest`).
QR Code Generator
Create scannable QR codes for URLs, plain text, or Wi-Fi credentials in your browser with SVG and PNG download.
Color Converter
Convert colors between HEX, RGB, and HSL formats with live swatch preview, contrast ratio check, and CSS copy.
Timestamp Converter
Convert Unix epoch timestamps (seconds or milliseconds) to ISO 8601, UTC, and local date/time—and vice versa.