All 108 tools

The complete index of 108 free in-browser tools on OmniWebTools, grouped by category: encoders, formatters, converters, generators, color, time, network, device tests and image tools.

Strings & Text

Case Converter: camelCase, snake_case, kebab & more
Slugify: URL-safe slugs from any string
Word & Char Count: Chars, words, lines, read time
Line Tools: Sort, reverse, dedupe, trim lines
Find & Replace: Bulk replace with regex support
Regex Tester: Live match highlighting, groups, flags
Text Diff: Compare two blocks line by line
Reverse Text: Flip characters, words or lines
Whitespace Cleaner: Trim, collapse, strip blank lines
Word Frequency: Rank words, chars or lines by count
NATO Phonetic: Spell text as Alfa Bravo Charlie

Encode & Crypto

Base64: Encode / decode, UTF-8 safe
URL Encode: Percent-encode & decode URIs
Hash Generator: SHA-1 / 256 / 384 / 512 digests
JWT Decoder: Inspect header & payload claims
JWT Signer: Build & HMAC-sign a token
Image → Data URI: Drop an image, get a Base64 URI
HTML Entities: Escape & unescape entities
Hex ↔ Text: Bytes to text and back, any base
ROT / Caesar: Rotate letters, ROT13 & shifts
Morse Code: Translate text ↔ Morse, with audio
Backslash Escape: Escape \n \t \" for code literals
Binary ↔ Text: Text to 8-bit binary and back
Unicode Inspector: Code points, UTF-8 bytes & entities

Math & Calculators

Base Converter: Bin / oct / dec / hex live convert
Calculator: Expression evaluator with history
Random Number: Ranged, batches, copy out
Unit Converter: Length, mass, data, temperature
Percentage: Change, of-total, tip & discount
Roman Numerals: Arabic ↔ Roman, up to 3999999
Aspect Ratio: Solve W:H ratios & resize
Number Formatter: Grouping, decimals, scientific
Number to Words: Spell out numbers & currency
Prime & Factors: Primality test & factorization
CSS Unit Converter: px ↔ rem ↔ em ↔ pt ↔ %

Data & Format

JSON Formatter: Pretty-print, minify & validate
JSON → YAML: Convert JSON to readable YAML
CSV ↔ JSON: Tabular to objects and back
SQL Formatter: Format SQL for 20 dialects
Byte Size: Humanize & convert data sizes
XML Formatter: Pretty-print & indent XML / HTML
Markdown → HTML: Live split preview & HTML source
Markdown Viewer: Read .md files rendered, with an outline
.env ↔ JSON: Convert config files both ways
List → MD Table: CSV / TSV to a Markdown table
JSON → TypeScript: Generate interfaces from sample JSON

Generators

UUID Generator: v4 IDs, bulk, with/without dashes
Password Gen: Strong, configurable, entropy meter
Lorem Ipsum: Words, sentences, paragraphs
QR Code: Encode links & text to a QR code
Mock Data: Fake people as JSON or CSV rows
Random String: Tokens by length & charset
ASCII Art Banner: Big figlet-style text banners

Color & Design

Color Converter: HEX ↔ RGB ↔ HSL with preview
Contrast Checker: WCAG AA / AAA pass checks
Palette Builder: Harmonious schemes from one color
Gradient Maker: CSS gradients with live stops
Color Mixer: Blend two colors at any ratio
Color Blindness Sim: Preview palettes under CVD types
Box Shadow: CSS box-shadow with live preview
SVG Pattern Generator: Seamless tiling backgrounds as SVG or CSS
SVG Blob Generator: Organic blob shapes with a copyable path

Time & Date

Timestamp: Unix ↔ human, ISO, relative
Cron Parser: Explain & preview cron schedules
Timezone: Compare clocks across the world
Date Diff & Age: Days between dates, age in detail
Date Info: Week no, day of year, quarter, leap
Duration Humanizer: Seconds ↔ human-readable spans
Online Timer: Countdown timer with an alarm
Stopwatch: Lap timer to the hundredth

Web & Network

Query String: Parse & build URL query params
Headers & UA: Your browser + header reference
IP & CIDR: Subnet math, ranges & masks
URL Parser: Break a URL into its parts
HTTP Status Codes: Searchable status code reference
Basic Auth Header: Build & decode Authorization: Basic

Device Test

Double-Click Tester: Catch a mouse switch double-firing
Key Chatter Tester: Detect keys that register twice
Key Rollover (NKRO): See every key you hold at once
Click Speed Test: Measure your clicks per second
Mouse Button Tester: Every button & the scroll wheel
Gamepad Tester: Live buttons, sticks & triggers
Screen / Dead Pixel: Full-screen fields to spot dead pixels
Multi-Touch Tester: Visualize every touch point
Webcam Test: Check your camera before a call
Microphone Test: Live level meter and playback
Speaker Test: Left, right and volume check
Typing Speed Test: Words per minute and accuracy

Image

Image Margin: Add colored padding to all 4 sides
Palette Extractor: Pull dominant colors from an image
Image Resize: Scale to exact px or by percentage
Photo Censor: Pixelate, blur or black out parts of an image
Image Compressor: Shrink JPG, PNG and WebP files
Image Converter: Convert between JPG, PNG and WebP
Photo Metadata Remover: Strip GPS, camera and date data
HEIC to JPG: Convert iPhone photos to JPG
Signature Maker: Draw a signature, download a PNG

PDF

Merge PDF: Combine PDFs into one file
Split PDF: Extract pages or split into files
Organize PDF: Reorder, rotate and delete pages
Images to PDF: Turn JPG or PNG images into a PDF

Random & Fun

Dice Roller: Roll any dice: d6, d20, 3d8…
Coin Flip: Flip one or many, track odds
Random Picker: Pick a winner from your list
List Shuffler: Shuffle or number any list
Magic 8-Ball: Ask a question, get an answer
Random Color: Roll surprise colors with hex
Spin the Wheel: Spin a wheel of names or options