Fair Toolbox

Free online tools that run in your browser. No signup. No tracking links.

QR Code Generator

Paste a URL and instantly generate a downloadable QR code. No tracking links added.

JSON Formatter

Paste minified or messy JSON and get clean, indented output. Shows errors for invalid JSON.

Base64 Encoder

Encode any text or string to Base64 instantly. Useful for embedding data, APIs, and more.

Base64 Decoder

Decode a Base64 string back to plain text. Inspect tokens, payloads, and encoded data.

URL Encoder

Encode text for safe use in URLs and query parameters. Handles special characters and Unicode.

URL Decoder

Decode percent-encoded URLs back to readable text. See what's behind %20 and %3D.

Markdown to HTML

Convert Markdown syntax to clean HTML. Supports headings, lists, links, code blocks, and more.

HTML to Markdown

Convert HTML markup back to clean Markdown syntax. Great for migrating content.

Word Counter

Count words, characters, sentences, and paragraphs in any text. Live updating.

Color Picker

Pick a color and convert between HEX, RGB, and HSL formats instantly.

CSV to JSON

Convert CSV data to JSON format. Uses the first row as keys.

JSON to CSV

Convert JSON arrays to CSV format for spreadsheets and data tools.

Lorem Ipsum Generator

Generate placeholder text by paragraph, sentence, or word count.

Password Generator

Generate strong, random passwords with customizable length and character types.

Hash Generator

Generate SHA-256, SHA-1, and SHA-512 cryptographic hashes from any text.

UUID Generator

Generate one or many random UUIDs (v4) instantly. Copy with one click.

Case Converter

Convert text between UPPER, lower, Title, camelCase, snake_case, and more.

Text Diff Checker

Compare two texts side by side and see differences highlighted line by line.

Regex Tester

Test regular expressions against text. See matches highlighted in real time.

YAML / JSON Converter

Convert between YAML and JSON formats in either direction.

JWT Decoder

Decode JSON Web Tokens and inspect the header, payload, and expiration.

JSON Minifier

Compress JSON by removing all whitespace and formatting. Opposite of formatter.

HTML Entity Converter

Encode special characters to HTML entities and decode them back.

Number Base Converter

Convert numbers between binary (base 2), octal (8), decimal (10), and hex (16).

Cron Expression Parser

Parse cron expressions and see them explained in plain English with next run times.

Markdown Preview

Write Markdown and see the rendered HTML preview updating in real time.

Aspect Ratio Calculator

Enter a width and ratio (16:9, 4:3, etc.) to calculate the matching height.

Text to Speech

Read any text aloud using your browser's built-in speech synthesis. Choose voice and speed.

Unit Converter

Convert between units of length, weight, and temperature. Metric and imperial.

Timecode Writer

Log timestamped editing notes while a timer runs. Export as text for video and podcast review.

JSON Validator

Validate JSON syntax and find errors with line numbers.

XML Formatter

Pretty-print and format XML with proper indentation.

CSS Minifier

Minify CSS by removing comments, whitespace, and unnecessary characters.

SQL Formatter

Format and beautify SQL queries with proper indentation.

HTML Formatter

Beautify and format HTML code with proper indentation.

Email Signature Generator

Create a professional HTML email signature with your details.

Barcode Generator

Generate barcodes in CODE128, EAN-13, UPC, and other formats.

Chmod Calculator

Calculate Unix file permissions in numeric and symbolic notation.

Text Reverser

Reverse any text backwards, character by character.

Binary Translator

Convert text to binary code and binary back to text.

CSS Gradient Generator

Create linear and radial CSS gradients with a visual editor.

Roman Numeral Converter

Convert numbers to Roman numerals and Roman numerals to numbers.

Number to Words

Spell out any number in English words.

PNG to JPG Converter

Convert PNG images to JPG format. Reduce file size while keeping good quality.

JPG to PNG Converter

Convert JPG images to PNG format. Get lossless quality and transparency support.

WebP to PNG Converter

Convert WebP images to widely compatible PNG format. Open WebP files anywhere.

Image to Base64

Convert any image to a Base64 data URI for embedding in HTML, CSS, or JSON.

SVG to PNG Converter

Convert SVG vector graphics to PNG images at any size. No upload needed.

Image Resizer

Resize images to exact dimensions. Maintains aspect ratio by default.

Image Compressor

Reduce image file size with adjustable quality. See the size before and after.

Favicon Generator

Generate 16x16, 32x32, and 48x48 favicon PNGs from any image.

Image Cropper

Crop images visually by dragging a selection area on the image.

Image Rotator

Rotate images 90/180/270 degrees or flip them horizontally and vertically.

Image Watermark

Add a customizable text watermark to any image. Control size, position, and opacity.

Color Palette Generator

Upload an image and extract its dominant colors as a palette.

HEIC to JPG

Convert HEIC/HEIF images from iPhone to JPG format.

Video Frame Extractor

Capture a single frame from any video and download it as a PNG image.

PDF Splitter

Extract specific pages or page ranges from a PDF file. No upload needed.

PDF Merger

Combine multiple PDF files into a single document. Drag to reorder before merging.

PDF to Images

Convert each page of a PDF into a downloadable PNG image.

Images to PDF

Combine multiple images (JPG, PNG, WebP) into a single downloadable PDF.

PDF Compressor

Reduce PDF file size by removing unused objects and optimizing the structure.

PDF Page Rotator

Rotate all pages in a PDF by 90, 180, or 270 degrees.

PDF Password Protector

Add a password to any PDF file. The recipient must enter it to open the document.

PDF Password Remover

Enter a PDF's password to download an unlocked copy without it.

PDF Text Extractor

Extract and copy selectable text from any PDF file.

WAV to MP3 Converter

Convert WAV audio files to MP3 directly in your browser. No upload, no server processing.

MP3 to WAV Converter

Convert MP3 audio files to WAV directly in your browser. No upload, no server processing.

Audio Splitter

Trim audio files by setting start and end times. Export the segment as WAV.

Audio Merger

Combine multiple MP3 or WAV files into a single audio file.

Audio Speed Changer

Speed up or slow down audio files from 0.5x to 3x. Preview and download as WAV.

Audio Volume Booster

Increase or decrease audio volume by a percentage. Preview and download as WAV.

Audio Reverser

Reverse any audio file and play it backwards. Preview and download as WAV.

BMI Calculator

Calculate your Body Mass Index from height and weight. Metric and imperial.

Tip Calculator

Calculate tip amount and split the total bill between any number of people.

Interest Calculator

Calculate simple and compound interest. See total growth over time.

Inflation Calculator

Calculate what a USD amount from any year (1913–2025) is worth in today's dollars.

Age Calculator

Calculate your exact age in years, months, and days from your birthdate.

Percentage Calculator

Calculate what percent of a number, percentage change, and more.

Mortgage Calculator

Calculate monthly mortgage payments, total interest, and amortization.

Discount Calculator

Calculate the final sale price and how much you save after a discount.

Timestamp Converter

Convert Unix timestamps to human-readable dates and back. Shows your local timezone.

Day of Week Calculator

Find what day of the week any date falls on. Also shows days until/since and age.

Timer

Set a countdown timer for any duration. Plays a sound when time is up.

Date Difference Calculator

Calculate the exact days, weeks, months, and years between any two dates.

Countdown Timer

Count down to any date — see days, hours, minutes, and seconds remaining.

Timezone Converter

Convert time between any two timezones instantly.

Coin Flip

Flip a virtual coin — heads or tails. Uses cryptographic randomness.

Dice Roller

Roll a virtual 6-sided die. Uses cryptographic randomness. Tracks roll history.

Random Picker

Pick a random winner from a list of names or items. Great for raffles and giveaways.

Random Number Generator

Generate one or more random numbers within a custom range.

Pomodoro Timer

Stay focused with timed work sessions and breaks using the Pomodoro technique.

Stopwatch

A simple, accurate stopwatch with lap times.

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What Is Fair Toolbox?

Fair Toolbox is a collection of free, browser-based utilities. Every tool runs entirely on your device — your data is processed locally using JavaScript, never uploaded to a server.

There are no accounts, no email gates, and no tracking links injected into your output. Just tools that do what they say.

Why Use Fair Toolbox?

100% free — no premium tiers, no usage limits
No account or signup required
No email collection
No tracking links in generated output
Your data is processed on your device, not our servers