Developer Utilities

A curated collection of fast, private developer tools running directly in your browser. Zero data uploads, zero tracking, and fully functional offline.

PDF Tools

4 tools

JSON Tools

6 tools

CSV & Excel Tools

5 tools

Image Tools

8 tools
Image Tools

Image Compressor

Compress and optimize your JPG, PNG, and WebP images directly in your browser. Dramatically reduce file sizes for web pages, emails, and apps while keeping your photos completely private.

Image Tools

Image Converter

Convert PNG, JPEG, WebP, GIF, SVG, and BMP images directly in your browser. Switch to modern web formats, preserve alpha transparency, or customize background fills.

Image Tools

Image to Base64 Converter

Convert any image into a Base64 encoded string or Data URI instantly. Embed graphics directly into HTML, CSS, JSON payloads, or JavaScript without external file hosting.

Image Tools

Image Resizer

Change image pixel dimensions or scale by percentage directly in your browser. Maintain original aspect ratios, choose standard social media presets, and process photos privately without server uploads.

Image Tools

Image Cropper

Crop images with exact pixel boundaries, preset aspect ratios (1:1, 4:3, 16:9), or circular avatar framing. Edit photos privately in your browser without uploading files to remote servers.

Image Tools

Favicon Generator

Convert any logo, image, or emoji into standard favicon packages for web browsers, iOS home screens, and Android PWAs. Includes HTML link tags and webmanifest code generation with 100% client-side privacy.

Image Tools

Custom QR Code Generator

Generate branded, fully customizable QR codes for websites, Wi-Fi networks, and contacts. Add custom colors, linear gradients, rounded module patterns, custom corner eyes, center logos, and 'SCAN ME' call-to-action frames with 100% client-side privacy.

Image Tools

Image Background Remover

Remove image backgrounds directly in your browser using color keying, corner-anchored flood fill algorithms, and adjustable edge feathering. Export cutouts with transparent alpha channels in PNG or WebP formats with zero server upload.

Encoding & Cryptography

6 tools
Encoding & Cryptography

Base64 Encode and Decode

Encode plain text to Base64 or decode Base64 strings back to plain text directly in your browser. Full support for international UTF-8 characters, emojis, and URL-safe formatting.

Encoding & Cryptography

JWT Decoder

Decode and inspect JSON Web Tokens (JWT) directly in your browser. View header parameters, payload data claims, human-readable expiration dates, and signature components with zero server uploads.

Encoding & Cryptography

URL Encode & Decode

Convert special characters, spaces, and Unicode into percent-encoded triplets (%XX) or decode URLs back to readable text according to RFC 3986 standards. Includes an interactive URL query parameter inspector and line-by-line batch processing.

Encoding & Cryptography

Hash Generator

Compute cryptographic message digests and file checksums in real time using SHA-256, MD5, SHA-512, SHA-384, SHA-1, and CRC-32. Includes HMAC key authentication and hash verification with 100% client-side privacy.

Encoding & Cryptography

UUID & GUID Generator

Generate cryptographically secure Universally Unique Identifiers (UUIDs / GUIDs) conforming to RFC 4122 and RFC 9562. Supports bulk generation for UUID v4 (random), UUID v7 (time-ordered Unix epoch), UUID v1 (timestamp), and includes a real-time UUID inspector and timestamp decoder.

Encoding & Cryptography

Unix Timestamp Converter

Convert Unix epoch timestamps to readable date and time strings across UTC and global timezones, or convert calendar dates into epoch timestamps with second, millisecond, and nanosecond precision. Conforms to POSIX IEEE Std 1003.1 and ISO 8601 standards.

Text Utilities

3 tools