Developer Tools for Everyone
32 fast, private utilities for passwords, data, images and text โ all running securely inside your browser. Nothing is uploaded, nothing is stored.
Create cryptographically secure passwords with custom length and character sets.
Estimate how strong a password is and get specific advice to improve it.
Beautify, minify and validate JSON with clear error messages.
Encode text to Base64 or decode it back, with full UTF-8 support.
Generate SHA-1, SHA-256, SHA-384 and SHA-512 hashes from any text.
Generate one or many random version-4 UUIDs instantly.
Live counts of characters, words, sentences, paragraphs and reading time.
Turn any title into a clean, lowercase, SEO-friendly URL slug.
Convert text between UPPER, lower, Title, Sentence, camelCase, snake_case and more.
Generate placeholder text by paragraphs, sentences or words.
Pick a color and get HEX, RGB and HSL values instantly.
Build linear or radial CSS gradients and copy production-ready code.
Convert length, weight, temperature, area and volume with precision.
Convert Unix timestamps to human dates and back, in local and UTC time.
Write Markdown and see a live HTML preview side by side.
Percent-encode or decode URLs and query-string components safely.
Re-indent messy HTML or compress it for production.
Format CSS with clean indentation or compress it for faster loading.
Remove comments and extra whitespace to shrink JavaScript.
Test regex patterns live with match highlighting and capture groups.
Compare two blocks of text and highlight added and removed lines.
Convert numbers between binary, octal, decimal and hexadecimal.
Convert images between PNG, JPEG and WebP right in your browser.
Resize images to exact pixel dimensions, optionally keeping the aspect ratio.
Shrink image file size by adjusting quality, with a live size comparison.
Turn any URL or text into a downloadable QR code.
Decode a JSON Web Token's header and payload without the secret key.
Convert a JSON array of objects into CSV for spreadsheets.
Convert CSV data into a structured JSON array of objects.
Count total, non-empty and blank lines plus characters.
See how often each character appears in your text.
Look up the approximate location, ISP and timezone of an IP address.
Free developer tools that genuinely work
KwikTools is a suite of 32 professional utilities that all run entirely inside your browser. Every tool here does exactly what it promises โ a cryptographically secure password generator, a real JSON formatter and validator, SHA-256/512 hashing via the Web Crypto API, image conversion and compression on an HTML canvas, scannable QR codes, a live regular-expression tester, and more.
Because all processing happens locally, the data you paste never leaves your device. Nothing is uploaded to a server and nothing is stored. That means complete privacy, instant results, and no account required.
Why a browser-based toolkit?
Copying sensitive data โ API tokens, JWTs, passwords, private JSON payloads โ into a random website is a real risk. KwikTools sidesteps that entirely: open the page, do the work, close the tab. There is no backend that could leak your input because there is no backend at all.