# Developers

> Utilities for developers — UUIDs, timestamps, Base64, number bases and codes, all working offline in the browser.

URL: https://acrafto.com/en/developers/

Tools are interactive browser apps; there is no public API, no endpoints to call and no server-side processing. To use a tool, open its HTML page in a browser.

## IDs & time

- [UUID Generator](https://acrafto.com/en/uuid-generator/index.md): Generate Universally Unique Identifiers (UUIDs) online for free. Our tool supports all UUID versions (v1, v3-v7) and can generate thousands of IDs at once.
- [UUID Decoder and Validator](https://acrafto.com/en/uuid-decoder-validator/index.md): Decode UUIDs online. Analyze version, extract timestamp (v1, v7), and validate format. Supports UUID v1, v3, v4, v5, v6, v7. Free & easy to use.
- [UNIX Timestamp Converter](https://acrafto.com/en/unix-timestamp-converter/index.md): Convert UNIX timestamps to human-readable dates and back. Displays current epoch time in real-time, local time, UTC, and relative time. Completely free online.

## Encoding

- [Base64 Encoder and Decoder](https://acrafto.com/en/base64-encoder-decoder/index.md): Advanced online Base64 encoder/decoder. Handles UTF-8 issues, supports URL-safe format, and explains the encoding principle. Free to use.
- [URL Encoder and Decoder](https://acrafto.com/en/url-encoder-decoder/index.md): URL encode and decode text online as you type, choose %20 or + for spaces, split any URL into editable query parameters and strip UTM tags in one click.
- [JSON Formatter and Validator](https://acrafto.com/en/json-formatter-validator/index.md): Format, validate and minify JSON online. Live error check with line and column, one-click repair of trailing commas and single quotes, sorted keys, big numbers kept intact.
- [Base64 to Image Converter](https://acrafto.com/en/base64-to-image-converter/index.md): Instantly convert Base64 strings or HTML tags to images. Decode Data URI and download as JPG, PNG, or WebP. Free, secure, and works directly in your browser.
- [Number System Converter](https://acrafto.com/en/number-system-converter-negative-numbers/index.md): Convert between BIN, HEX, DEC, OCT number systems. Supports two's complement, 8-64 bit widths, and large numbers. Free online tool for developers.

## Colors & text

- [Color Picker](https://acrafto.com/en/color-picker-online/index.md): Pick colors on an HSV, HSL or painter's RYB wheel, get ready made color harmonies and convert HEX, RGB, HSL, OKLCH and CMYK. Nearest Tailwind token included.
- [Image Color Picker](https://acrafto.com/en/online-image-color-picker/index.md): Upload an image, click a color and its HEX, RGB or HSL code is on your clipboard. Pixel loupe, zoom and dominant color palette. Free, private, no signup.
- [Case Converter](https://acrafto.com/en/case-converter/index.md): Convert text to camelCase, snake_case, PascalCase & kebab-case, or just quickly to UPPERCASE or lowercase. For developers and everyday writing. Free and online.
- [Compare Text](https://acrafto.com/en/compare-text-diff-checker/index.md): Compare two texts online and see every difference highlighted side by side, line by line or word by word. Free diff checker, nothing leaves your browser.
- [Markdown Editor](https://acrafto.com/en/markdown-editor/index.md): Write Markdown online with a live preview side by side. Toolbar, shortcuts, tables, task lists, footnotes, paste from Word or Google Docs, save as PDF or Word.
- [Markdown Converter](https://acrafto.com/en/markdown-converter/index.md): Free Markdown converter: MD to PDF, Word, EPUB, LaTeX, HTML or text, tables to Excel and CSV, plus Jira, Slack and BBCode. Everything runs in your browser.