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 a colored border or decorative frame around an image
Text overlay with position and opacity control
Blur or redact sensitive areas in your photos
Reduce file size while maintaining quality
Pixel-precise cropping with presets
Mirror an image horizontally or vertically
Erase image backgrounds and download a transparent PNG
Change dimensions with smart presets
Rotate and flip with live preview
Decode a Base64 string back to a downloadable image
Convert between JPG, PNG, WebP, and HEIC in your browser
Extract a GIF frame as a static PNG or JPG image
Convert iPhone HEIC photos to JPG
Convert iPhone HEIC photos to PNG
Convert any image to a Base64 encoded string
Convert JPG images to lossless PNG format
Convert JPG images to smaller WebP format
Convert PNG images to JPG format
Convert PNG images to smaller WebP format
Convert SVG vector files to PNG or JPG raster images
Convert WebP images to JPG format
Convert WebP images to PNG format
Adjust brightness, contrast, and saturation levels
Pick any color from an image: get HEX, RGB, HSL values
Convert color photos to black and white or grayscale
Invert all colors in an image to create a negative effect
Add rounded corners or make images perfectly circular
Apply sepia, warm, cool, or vintage filter to photos
Convert any image to favicon ICO or app icon sizes
Place one image on top of another with opacity control
Crop and resize photos to passport and visa dimensions
Generate QR codes from URLs, text, WiFi, and more
Add page numbers to every page of a PDF
Diff extracted plain text from two PDFs in a unified patch view
Shrink one PDF or batch-compress many into a ZIP
Draw the keep region on a preview. Updates CropBox without re-encoding pages
Combine multiple images into a single PDF
Combine multiple PDF files into one document
Add an open password by re-encoding, or remove one with the correct password
Convert PDF pages to JPG or PNG images
Extract all text content from a PDF document
Draw regions on a live preview and burn in black or blur. Visual redaction only, not forensic.
Delete unwanted pages from any PDF
Rearrange pages within a PDF by drag and drop
Change page dimensions to A4, Letter, A5, or custom size
Fix sideways or upside-down PDF pages
Paste a screenshot or upload an image and convert to PDF
Extract specific pages or page ranges
Preview PDF, drag a stamp (upload, draw, or type) on every page
Add text watermark across all pages of a PDF
Strip hidden metadata and GPS from photos
Prepend line numbers to each line of text
Convert text between uppercase, lowercase, title case, camelCase, snake_case, and more
Count characters with live limits for Twitter, SMS, and more
Encode or decode HTML entities like &, <, and >
Generate placeholder text in paragraphs, sentences, or words
Convert Markdown text to HTML with live preview
Remove duplicate lines from text, keeping only unique entries
Reverse text by characters, words, or lines
Sort lines of text alphabetically, numerically, by length, or reverse
Compare two text blocks and highlight word-level differences
Repeat a text string N times with a custom separator
Convert any text into a clean, URL-friendly slug
Count words, characters, sentences, paragraphs, and reading time
Encode text to Base64 or decode Base64 back to text
Convert between HEX, RGB, HSL, and CMYK color formats
Parse cron expressions into human-readable descriptions and next run times
Minify CSS by stripping comments and collapsing whitespace
Convert CSV data to JSON format with automatic header detection
Compare two text or code blocks and highlight line-by-line differences
Generate MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes from text
Remove comments and whitespace from JavaScript code
Format, validate, and minify JSON with syntax highlighting
Convert JSON arrays to CSV format for spreadsheet import
Decode and inspect JSON Web Tokens: header, payload, expiry
Convert numbers between binary, octal, decimal, and hexadecimal
Test regular expressions against text with real-time match highlighting
Convert Unix timestamps to human-readable dates and vice versa
Percent-encode or decode URL strings and query parameters
Generate random UUIDs (v4) in bulk with format options
Calculate exact age in years, months, and days from date of birth
Calculate Body Mass Index with metric and imperial support
Calculate days between dates or add/subtract days from any date
Calculate discounted price, savings, and original price from any two values
Calculate monthly EMI, total interest, and amortization schedule
Calculate percentages: what is X% of Y, % change, and more
Full scientific calculator with trig, log, and exponential functions
Convert times between timezones with live clocks
Calculate tip amount and split the bill between people
Convert between units of length, weight, temperature, volume, and more
Generate strong random passwords with customisable rules
Analyse password strength with a detailed score and improvement tips
Generate cryptographically secure random numbers in any range
Generate harmonious color palettes from any base color
Count down to any date and time with a shareable live display
Distraction-free notepad with auto-save to your browser
Productivity timer with work/break cycles and audio alerts
Scan QR codes from uploaded images or live camera feed
Check your screen resolution, viewport size, and device pixel ratio
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.