100% Client-Side Processing & Secure

RezanToolbox — Free
Online Tools for Everyone

102+ free online tools — image resizer, word counter, JSON formatter, QR code generator, password generator & more. No download, no signup. 100% private browser tools.

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102+
Free Online Tools
100%
Client-Side & Private
Instant
Real-Time Processing

Recently Used Tools

Text Tools Suite

Format, clean, encode, cipher, and analyze text documents

31 Tools
Word Counter

Analyze text to count words, characters, sentences, paragraphs, and estimate reading time.
Character Counter

Check character counts, with and without spaces, to fit character limits.
Sentence Counter

Count the number of sentences in your writing for readability and style.
Paragraph Counter

Count the paragraphs in your articles, blog posts, or school essays.
Reading Time Calculator

Estimate how long it will take to read a piece of text based on standard reading speed.
Text Case Converter

Convert text between UPPERCASE, lowercase, Title Case, Sentence case, camelCase, snake_case, etc.
Remove Extra Spaces

Clean up your text by stripping leading, trailing, and duplicate spaces.
Remove Empty Lines

Instantly delete all blank or empty lines from your text or code snippet.
Remove Duplicate Lines

Filter out redundant, duplicate lines from lists, logs, or plain text.
Sort Lines

Sort text lines alphabetically, reverse-alphabetically, numerically, or by length.
Reverse Text

Flip your text backward. Reverses every individual letter or character.
Reverse Words

Reverse the order of words in a sentence while keeping individual words readable.
Alphabetize Text

Sort the words, items, or lines in your text in alphabetical order.
Random Text Generator

Generate random alphanumeric strings, characters, or secure custom passwords.
Lorem Ipsum Generator

Generate placeholder text in words, sentences, or paragraphs for design mockups.
Slug Generator

Convert text into URL-friendly, SEO-safe slugs (e.g. 'slug-generator').
URL Encoder

Encode query parameters and URLs to be safe for transmission over HTTP.
URL Decoder

Decode URL-encoded parameters back into human-readable plain text.
Base64 Encoder

Convert standard plain text or binary data into Base64 format.
Base64 Decoder

Decode Base64 formatted strings back into readable UTF-8 text.
HTML Encoder

Convert special characters into HTML entities to safely display code in browser.
HTML Decoder

Decode HTML entities back to their normal character representations.
ROT13 Encoder

Obfuscate or cipher text using the classic ROT13 letter substitution cipher.
Text Diff Checker

Compare two text snippets side-by-side to highlight differences and changes.
Find and Replace

Search for specific strings or regex patterns and replace them in your text.
Unicode Converter

Convert text characters to Unicode escape sequences (e.g. \uXXXX) and vice versa.
ASCII Converter

Convert text letters into their decimal ASCII codes, or translate numbers back to text.
Morse Code Encoder

Translate english alphanumeric text into Morse Code dots and dashes.
Morse Code Decoder

Translate Morse Code (dots and dashes) back into standard text characters.
Binary Converter

Convert text to binary format (ASCII 1s and 0s) and binary back to text.
Hex Converter

Convert text into hexadecimal notation, and decode hexadecimal back to text.

Image Tools Suite

Resize, crop, convert, compress, extract EXIF, and generate codes

30 Tools
Image Resizer

Change image width and height dimensions with aspect ratio lock.
Image Cropper

Crop images interactively with precise bounding boxes and pre-set aspect ratios.
Image Compressor

Reduce image file sizes by optimizing JPEG/PNG quality client-side.
Image Converter (PNG ↔ JPG ↔ WebP)

Convert images from and to PNG, JPG, and WebP formats instantly.
WebP Converter

Convert standard PNG/JPG/GIF files into modern, optimized WebP format.
PNG to JPG

Convert transparent or solid PNG files into standard JPG format.
JPG to PNG

Convert JPG files to PNG format to support transparency overlays.
Image Rotator

Rotate images clockwise or counterclockwise by 90, 180, or 270 degrees.
Image Flipper

Flip images horizontally or vertically to create mirror effects.
Image Watermark

Overlay text or image watermarks onto your photos with transparency.
Blur Image

Apply custom Gaussian blur filters to soften details or hide information.
Sharpen Image

Enhance edges and highlight details in images using high-pass filters.
Brightness Adjuster

Brighten or darken pictures with custom percentage sliders.
Contrast Adjuster

Modify tonal ranges to make the light areas lighter and dark areas darker.
Grayscale Converter

Convert colored images into professional black-and-white photos.
Sepia Filter

Apply a nostalgic, warm brown sepia tone to your digital images.
Image Border Generator

Add custom borders to images with adjustable width, color, and padding.
Image Rounded Corner Generator

Round image corners with customizable radius size (circular or square).
Thumbnail Generator

Generate standard custom-sized thumbnail images quickly.
Social Media Image Resizer

Fit images to exact dimensions for Facebook, Instagram, Twitter, and YouTube.
Image Metadata Viewer

Read hidden EXIF, TIFF, and JPEG metadata tags inside digital photos.
EXIF Remover

Protect your privacy by stripping EXIF geo-tags and metadata from images.
Image Color Picker

Hover and click on an image to extract exact colors in Hex, RGB, or HSL.
Dominant Color Extractor

Analyze an image to find its single most dominant primary color.
Palette Generator

Generate a matching, harmonious 5-color palette from any uploaded image.
Image Splitter

Slice a single image into a grid of smaller tile images and download as a zip.
Image Merger

Combine multiple pictures horizontally, vertically, or into a grid layout.
Meme Generator

Make custom memes by adding top and bottom text overlay on images.
QR Code Generator

Create customizable QR codes for text, URLs, phone numbers, and download PNG.
QR Code Reader

Upload a QR code image to read, decode, and copy its hidden text contents.

Developer Tools

Format, validate, and transform JSON, XML, YAML, Markdown, SQL, and code snippets.

27 Tools
JSON Formatter

Format raw JSON into easy-to-read indented output.
JSON Viewer

View and inspect JSON data in a readable formatted structure.
JSON Minifier

Compress JSON by removing whitespace and line breaks for fast transmission.
JSON Diff

Compare two JSON documents side-by-side and highlight structural differences.
JSON Validator

Validate JSON syntax and report exact parsing errors instantly.
XML Formatter

Format XML with proper indentation and readable nesting.
XML Validator

Validate XML documents and identify syntax problems quickly.
YAML Formatter

Format YAML documents with clean indentation and structure.
CSV to JSON

Convert comma-separated values into JSON arrays or objects.
JSON to CSV

Convert JSON arrays or objects into comma-separated CSV format.
JWT Decoder

Decode JSON Web Tokens to inspect header, payload, and signature data.
Regex Tester

Test regular expressions against sample text and visualize matches.
Unix Timestamp Converter

Convert between Unix timestamps and human-readable date/time values.
URL Encoder

Encode plain text into URL-safe percent-encoding format.
URL Decoder

Decode percent-encoded URLs back into readable text.
HTML Encoder

Encode text to HTML entities so code displays safely in browsers.
HTML Decoder

Decode HTML entities back into human-readable characters.
HTML Formatter

Beautify HTML code with indentation and readable structure.
CSS Formatter

Format CSS with consistent spacing, indentation, and readability.
JavaScript Beautifier

Beautify JavaScript code with clean indentation and consistent formatting.
SQL Formatter

Format SQL queries for readability and syntax clarity.
Case Converter

Transform text between uppercase, lowercase, title case, and more.
Slug Generator

Create SEO-friendly slugs from titles, headings, and page names.
Lorem Ipsum Generator

Generate placeholder copy for mockups, wireframes, and layouts.
Markdown Editor

Write Markdown and preview rendered HTML in real-time.
Random Text Generator

Create random test strings, placeholders, or development sample text.
Password Generator

Generate strong passwords with custom length, symbols, and character sets.

Designed for Maximum Speed & Security

RezanToolbox uses modern web standards to execute computations locally in your browser.

100% Privacy Protected

Your photos, passwords, and documents never touch a web server. All calculations run strictly client-side on your processor.

Instant Offline Performance

Zero network latency. Files and inputs process instantly in milliseconds without downloading heavy payloads.

Fully Responsive Layout

Enjoy the same smooth developer tools suite on your laptop, iPad, or mobile phone. Built using flexible grids.