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Free online tools

15+ tools for developers and creators. Every tool runs in your browser — no upload, no signup, no telemetry.

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Developer tools

3 tools

Format, encode, and inspect data the way developers actually do.

JSON Formatter & Validator
Beautify, minify, and validate JSON instantly in your browser. 100% client-side, no upload.
Hash Generator
Compute MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes in your browser. No upload.
JWT Decoder
Decode JSON Web Tokens in your browser — inspect header, payload, and signature without a server round-trip.

Encoders & decoders

2 tools

Move data between encodings — Base64, URL, percent — without leaving the browser.

Base64 Encode / Decode
Encode text or bytes to Base64 and decode Base64 back to text. UTF-8 safe, runs locally.
URL Encode / Decode
Percent-encode and decode URLs and components. Handles UTF-8, query strings, full URLs.

Generators

2 tools

Spin up passwords, UUIDs, and other identifiers with cryptographic randomness.

UUID Generator
Generate RFC 4122 v4 UUIDs in bulk using the browser crypto API. No server, no duplicates.
Password Generator
Generate strong, random passwords with custom length and character sets. Client-side only.

Image tools

3 tools

Create and tweak images for web, print, and mobile.

QR Code Generator
Generate QR codes for URLs, text, Wi-Fi, and contacts. Download as PNG or SVG.
Image Compressor
Shrink JPG, PNG, or WebP images in your browser — pick quality and max width, see the savings before download.
Color Picker
Pick a color and see HEX, RGB, HSL, and HSV values instantly. Browser-native, no upload, no signup.

Text tools

3 tools

Manipulate text — case, count, placeholder, transform.

Lorem Ipsum Generator
Generate placeholder text by paragraph, sentence, or word count. Classic Lorem Ipsum source.
Case Converter
Convert text between UPPER, lower, Title, camelCase, snake_case, kebab-case, PascalCase, and CONSTANT_CASE.
Word & Character Counter
Count words, characters, sentences, paragraphs, and estimated reading time. Runs locally, no upload.

Converters

2 tools

Convert between units, formats, and markup — length, mass, temperature, Markdown, and more.

Unit Converter
Convert between metric and imperial units — length, mass, temperature, volume, time, and digital storage.
Markdown to HTML
Render Markdown to HTML in your browser. Live preview, sanitized output, and one-click copy.