About Nixrey

Our Mission

Nixrey was built to offer useful everyday tools without handing your documents to a remote processor. Many similar sites upload files to a server; we run the heavy work in your browser whenever possible so your content stays on your device for those features.

100% Client-Side Processing

For our client-side tools, files and inputs you use stay in your browser: images, PDFs, and text are processed with JavaScript, Canvas, WebAssembly-backed libraries, and in-browser PDF engines. Results are generated locally, with no upload to us for that processing, no waiting on a remote queue.

For those tools, we do not receive your files on our servers to run them. We use optional analytics (with consent) and hosting metrics to improve the site; see our Privacy Policy.

What You Can Do

Nixrey currently offers 100 free tools:

Add Border

Add a colored border or decorative frame around an image

Add Watermark

Text overlay with position and opacity control

Blur Image

Blur or redact sensitive areas in your photos

Compress Image

Reduce file size while maintaining quality

Crop Image

Pixel-precise cropping with presets

Flip Image

Mirror an image horizontally or vertically

Remove Background

Erase image backgrounds and download a transparent PNG

Resize Image

Change dimensions with smart presets

Rotate Image

Rotate and flip with live preview

Base64 to Image

Decode a Base64 string back to a downloadable image

Convert Image

Convert between JPG, PNG, WebP, and HEIC in your browser

GIF to PNG

Extract a GIF frame as a static PNG or JPG image

HEIC to JPG

Convert iPhone HEIC photos to JPG

HEIC to PNG

Convert iPhone HEIC photos to PNG

Image to Base64

Convert any image to a Base64 encoded string

JPG to PNG

Convert JPG images to lossless PNG format

JPG to WebP

Convert JPG images to smaller WebP format

PNG to JPG

Convert PNG images to JPG format

PNG to WebP

Convert PNG images to smaller WebP format

SVG to PNG

Convert SVG vector files to PNG or JPG raster images

WebP to JPG

Convert WebP images to JPG format

WebP to PNG

Convert WebP images to PNG format

Brightness & Contrast

Adjust brightness, contrast, and saturation levels

Color Picker

Pick any color from an image: get HEX, RGB, HSL values

Grayscale Image

Convert color photos to black and white or grayscale

Invert Colors

Invert all colors in an image to create a negative effect

Round Corners

Add rounded corners or make images perfectly circular

Sepia Filter

Apply sepia, warm, cool, or vintage filter to photos

Image to Favicon

Convert any image to favicon ICO or app icon sizes

Overlay Images

Place one image on top of another with opacity control

Passport Photo Maker

Crop and resize photos to passport and visa dimensions

QR Code Generator

Generate QR codes from URLs, text, WiFi, and more

Add Page Numbers

Add page numbers to every page of a PDF

Compare PDF

Diff extracted plain text from two PDFs in a unified patch view

Compress PDF

Shrink one PDF or batch-compress many into a ZIP

Crop PDF

Draw the keep region on a preview. Updates CropBox without re-encoding pages

Images to PDF

Combine multiple images into a single PDF

Merge PDF

Combine multiple PDF files into one document

PDF Password

Add an open password by re-encoding, or remove one with the correct password

PDF to Image

Convert PDF pages to JPG or PNG images

PDF to Text

Extract all text content from a PDF document

Redact PDF

Draw regions on a live preview and burn in black or blur. Visual redaction only, not forensic.

Remove PDF Pages

Delete unwanted pages from any PDF

Reorder PDF

Rearrange pages within a PDF by drag and drop

Resize PDF

Change page dimensions to A4, Letter, A5, or custom size

Rotate PDF

Fix sideways or upside-down PDF pages

Screenshot to PDF

Paste a screenshot or upload an image and convert to PDF

Split PDF

Extract specific pages or page ranges

Stamp PDF

Preview PDF, drag a stamp (upload, draw, or type) on every page

Watermark PDF

Add text watermark across all pages of a PDF

Remove EXIF Data

Strip hidden metadata and GPS from photos

Add Line Numbers

Prepend line numbers to each line of text

Case Converter

Convert text between uppercase, lowercase, title case, camelCase, snake_case, and more

Character Counter

Count characters with live limits for Twitter, SMS, and more

HTML Entity Encoder

Encode or decode HTML entities like &, <, and >

Lorem Ipsum Generator

Generate placeholder text in paragraphs, sentences, or words

Markdown to HTML

Convert Markdown text to HTML with live preview

Remove Duplicate Lines

Remove duplicate lines from text, keeping only unique entries

Reverse Text

Reverse text by characters, words, or lines

Sort Lines

Sort lines of text alphabetically, numerically, by length, or reverse

Text Diff

Compare two text blocks and highlight word-level differences

Text Repeater

Repeat a text string N times with a custom separator

Text to Slug

Convert any text into a clean, URL-friendly slug

Word Counter

Count words, characters, sentences, paragraphs, and reading time

Base64 Encode / Decode

Encode text to Base64 or decode Base64 back to text

Color Code Converter

Convert between HEX, RGB, HSL, and CMYK color formats

Cron Expression Parser

Parse cron expressions into human-readable descriptions and next run times

CSS Minifier

Minify CSS by stripping comments and collapsing whitespace

CSV to JSON

Convert CSV data to JSON format with automatic header detection

Diff Checker

Compare two text or code blocks and highlight line-by-line differences

Hash Generator

Generate MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes from text

JS Minifier

Remove comments and whitespace from JavaScript code

JSON Formatter

Format, validate, and minify JSON with syntax highlighting

JSON to CSV

Convert JSON arrays to CSV format for spreadsheet import

JWT Decoder

Decode and inspect JSON Web Tokens: header, payload, expiry

Number Base Converter

Convert numbers between binary, octal, decimal, and hexadecimal

Regex Tester

Test regular expressions against text with real-time match highlighting

Unix Timestamp Converter

Convert Unix timestamps to human-readable dates and vice versa

URL Encode / Decode

Percent-encode or decode URL strings and query parameters

UUID Generator

Generate random UUIDs (v4) in bulk with format options

Age Calculator

Calculate exact age in years, months, and days from date of birth

BMI Calculator

Calculate Body Mass Index with metric and imperial support

Date Calculator

Calculate days between dates or add/subtract days from any date

Discount Calculator

Calculate discounted price, savings, and original price from any two values

Loan Calculator

Calculate monthly EMI, total interest, and amortization schedule

Percentage Calculator

Calculate percentages: what is X% of Y, % change, and more

Scientific Calculator

Full scientific calculator with trig, log, and exponential functions

Time Zone Converter

Convert times between timezones with live clocks

Tip Calculator

Calculate tip amount and split the bill between people

Unit Converter

Convert between units of length, weight, temperature, volume, and more

Password Generator

Generate strong random passwords with customisable rules

Password Strength Checker

Analyse password strength with a detailed score and improvement tips

Random Number Generator

Generate cryptographically secure random numbers in any range

Color Palette Generator

Generate harmonious color palettes from any base color

Countdown Timer

Count down to any date and time with a shareable live display

Notepad

Distraction-free notepad with auto-save to your browser

Pomodoro Timer

Productivity timer with work/break cycles and audio alerts

QR Code Reader

Scan QR codes from uploaded images or live camera feed

Screen Resolution Checker

Check your screen resolution, viewport size, and device pixel ratio

Stopwatch

Precise stopwatch with lap times and built-in countdown timer

Free to use

Nixrey is free to use with no accounts required for the tools. There are no artificial file-size limits imposed by our servers for client-side processing (practical limits are your device memory and browser). We use privacy-conscious analytics to understand usage; Google Analytics runs only if you accept it in the banner. See the Privacy Policy for details.

Contact

Have feedback, feature requests, or questions? Reach out at contact@nixrey.com.