Free Developer and Text Tools
JSON formatter, regex tester, base64 encoder, UUID generator, password generator and more. No signup. Instant results. Works on mobile.
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Pick a category to find the tool you need
Developer Tools
JSON formatter, regex tester, base64, UUID generator, password generator and more
Browse Developer Tools →Text Tools
Word counter, case converter, character counter, lorem ipsum and more
Browse Text Tools →Unit Converters
Length, weight, temperature, speed, area and volume
All 6 Converters →What IWantFreeTools Offers
IWantFreeTools is a collection of small utilities grouped into three families. The developer set covers a JSON formatter, a regex tester, base64 encoding, a UUID generator, a password generator, a hash generator, a CSS minifier, and an HTML encoder. The text set handles case conversion, character and word counting, and text comparison. The converter set deals with units, colors between hex and RGB, and similar everyday conversions. Each one loads in a second and works the moment you paste something in. It is built for developers, writers, and students who need one answer quickly rather than another application to manage.
Doing these jobs by hand is where mistakes come from, because most of them implement a written specification that is easy to approximate and hard to get exactly right. Passwords are a good example: the NIST digital identity guidelines point toward length as the property that matters most, which is the opposite of the character substitution habits most people learned. UUIDs are another, since the format and version bits are defined precisely in RFC 9562 rather than being any random looking string of hex digits, so a hand written one is often rejected outright by software that actually validates the format.
Use the search box at the top rather than scrolling the categories, since typing what you want is faster than deciding which family it belongs to. Beyond that, know what each tool actually does before you rely on it. Base64 is the clearest trap: it is an encoding that makes binary data safe to move through text channels, and as the MDN glossary entry makes plain, it provides no confidentiality at all. Anything base64 encoded can be decoded by anyone in one step, so it is not a way to hide a value from anybody who happens to have the encoded string.
Why Use Free Tools Online
Browser based tools remove nearly everything that sits between a question and an answer. There is nothing to install, no package to add to a project you will not keep, and no version to check against your runtime. Much of what these tools do is already built into the browser itself: the hash generator and the password generator both call the Web Crypto API that ships with every current browser, so the capability is on your machine and the page is simply an interface onto it. That is also why these work identically on a locked down work laptop where you cannot install anything.
There is no account, no email address, and no payment step. That matters more in this category than most, because of what people actually paste into a formatter: API responses holding customer records, tokens, configuration files, and error dumps from production. Pasting any of that into a tool that processes server side means it has been transmitted to a third party, whatever the retention policy says afterward. Here the work happens on your own machine, nothing is sent anywhere, and closing the tab ends it. There is no log to request, because there is no server anywhere that could write one.
How to Get Started
- Type what you need into the search box at the top of the page. Searching for a word like json, regex, hash, or uuid gets you there faster than working out which of the three categories a given tool belongs to.
- Paste your input and read the result as it appears. These tools update as you type rather than waiting for a submit button, so a malformed JSON payload shows you its error the moment the problem character is entered.
- For the regex tester, build your pattern against real sample text rather than an idealized example. Patterns that work on tidy input routinely fail on the messy strings your actual data contains, and testing against the real thing surfaces that early.
- When generating passwords, favor length over complicated character substitutions. A longer passphrase is both stronger and easier to type correctly, and the generator here draws from the browser's cryptographic random source rather than an ordinary one.
- Copy your result with the copy button and verify it in context before moving on. A minified stylesheet, an encoded string, or a converted unit is easy to paste into the wrong place, and checking once is cheaper than debugging later.
Frequently Asked Questions
Are these tools free?
Yes, every one of them, with no paid tier, no trial that expires, and no feature held back for an upgrade. There is no signup and no limit on how many times you can use anything. The site is funded by advertising, which is why ad slots appear on some pages. No tool processes your input and then asks for payment before showing the result.
Can you see what I paste into these tools?
No. Every tool runs in your browser, and your input is never transmitted anywhere. There is no server that receives it, no database that stores it, and no log that records it, so there is nothing on our side that could be read, breached, or handed over. Closing the tab ends the session completely. That is the reason these are safe for API responses and configuration files.
Is base64 a way to encrypt something?
No, and treating it as one is a genuine security mistake. Base64 is an encoding that represents binary data using text safe characters so it can travel through systems that expect text. It provides no secrecy whatsoever, because anyone can decode it instantly without a key. Use it to move data, never to protect it. If you need confidentiality, you need actual encryption.
Are the generated passwords actually random?
The password generator uses the browser's cryptographic random number source rather than the ordinary one, which is the right primitive for this purpose. Generation happens entirely on your device, so no password you create here is ever transmitted or recorded. As a general habit, though, generate passwords directly inside your password manager where possible, since that avoids moving them between applications at all.
Why do results appear before I press anything?
The tools process your input as you type rather than waiting for a submit button, which is possible precisely because nothing is being sent to a server. There is no network round trip to wait on, so the result can update on every keystroke. It also means an error in your input surfaces immediately rather than after you have finished typing the whole thing.
Popular Tools
The tools people use most
How It Works
Three steps to your result
Search above or browse the categories. All tools are free and need no account.
Type in your input. Results appear instantly as you type, no button press needed.
Hit the Copy button and paste your result wherever you need it.
Developer Tools
JSON, regex, base64, UUID, passwords, test data and more
JSON Formatter
Beautify, minify and validate JSON
Regex Tester
Test regular expressions with live match highlighting
Base64 Encoder
Encode and decode Base64 strings
UUID Generator
Generate UUID/GUID v1 and v4 online
Password Generator
Create strong, secure random passwords
Text Diff
Compare two texts and highlight differences
Slug Generator
Convert titles to SEO-friendly URL slugs
UTM Builder
Build campaign URLs with UTM tracking parameters
Random Number
Generate random numbers in any range for testing or sampling
Random Color
Get random hex codes and color palettes
Random Date
Generate random dates in any format for test data
Mock Name Generator
Generate realistic mock names for databases and seed data
Markdown Editor
Write and preview Markdown with real-time rendered HTML output
HTML Encoder / Decoder
Convert special characters to HTML entities and back
URL Encoder / Decoder
Percent-encode URLs and decode encoded strings instantly
Hash Generator
Generate MD5, SHA-1, SHA-256 and SHA-512 hashes from text
CSS Minifier
Compress CSS by removing whitespace and comments
JSON to CSV
Convert a JSON array to CSV with nested key support
Color Code Converter
Convert colors between HEX, RGB and HSL instantly
Code Formatter
Beautify or minify JSON, CSS, HTML, JavaScript, SQL and Markdown
Tool Finder Quiz
Eight questions to narrow twenty tools down to the ones you need
All Tools
Every tool on the site, grouped by what you are trying to do
Text Tools
Clean, format and analyse text instantly
JSON Formatter
Beautify, minify and validate JSON
Word Counter
Count words, characters and reading time
Case Converter
UPPER, lower, Title and Sentence case
Regex Tester
Test regular expressions with live match highlighting
Base64 Encoder
Encode and decode Base64 strings
Lorem Ipsum Generator
Generate placeholder text for mockups
Slug Generator
Convert titles to SEO-friendly URL slugs
Character Counter
Count against Twitter, meta title and ad limits
UTM Builder
Build campaign URLs with UTM tracking parameters
Remove Line Breaks
Strip or replace line breaks from pasted text
Remove Duplicate Lines
Deduplicate and sort lists of text lines
Text Diff
Compare two texts and highlight differences
Text Repeater
Repeat any text a set number of times with a custom separator
Unit Converters
Convert length, weight, temperature and more instantly
How We Built These Tools
Why everything here runs in your browser
Every tool on this site runs entirely in your browser. When you paste a JSON payload into the formatter, or drop two versions of a file into the text diff, that content never leaves your machine. There is no upload step, no server processing, and no account to create. Close the tab and nothing persists.
That came from a specific frustration. Most quick jobs do not justify installing a package or signing up for a service. You need to check one thing, once, and get back to work. So every tool here is paste, click, done.
Three examples of how that plays out. A backend developer pastes an API response into the JSON formatter to find the missing comma before parsing it. Someone comparing a furniture listing in centimetres checks it against inches in the length converter without opening a calculator app. A developer seeding a test database generates fifty UUIDs in one click instead of writing a loop.
We review the tools monthly, fix anything reported as broken, and add new ones when there is a genuine gap rather than to inflate the count. If a tool you need is missing, email support@skillnestmarket.com and tell us what you were trying to do.