Online Developer Tools
— Fast, Private, Free
In-Browser Developer Tools
Format, convert, and process text, code, images and PDFs
— entirely in your browser and with zero sign-up.
Why Choose WebUtils?
Lightning‑Fast
Instant results with 100% client‑side processing.
Privacy‑First
Your data stays on your device; nothing is uploaded to our servers.
Developer‑Friendly
Clean UI and intuitive flows help you work faster with fewer errors.
Multi-Window Workflow
Detach tools into separate windows to view input and output simultaneously on different screens with real-time sync.
Popular Developer Tools
Open the most useful browser-based tools for formatting, encoding, PDFs, authentication, and data conversion.
JSON Formatter and Validator Online | Format, Minify, Debug
Format, validate, minify, and inspect JSON with examples and local processing.
Base64 Encoder and Decoder Online | UTF-8 Text Tool
Encode or decode Base64 text with UTF-8 support for APIs, JSON, and debugging.
MD5, SHA-256 and SHA-512 Hash Generator Online
Generate MD5, SHA-1, SHA-256, and SHA-512 digests for checksums and fingerprints.
URL Encoder and Decoder Online | UTF-8 Percent Encoding
Encode and decode URL components, query strings, and UTF-8 percent-encoded text.
JWT Decoder Online | Decode Header, Payload and Claims
Decode JWT headers and payload claims locally for auth and API debugging.
UUID v4 Generator Online | Bulk Secure UUIDs
Generate secure UUID v4 identifiers in bulk with case and hyphen options.
QR Code Generator Online | URL, Wi-Fi and vCard
Create QR codes for URLs, text, Wi-Fi, and contact data with downloadable output.
CSV to JSON and JSON to CSV Converter Online
Convert CSV to JSON or JSON to CSV for spreadsheets, APIs, and data cleanup.
PDF Merge Online | Combine PDF Files Locally
Merge multiple PDF files locally with drag-and-drop ordering and no upload.
Image to PDF Converter Online | JPG and PNG to PDF
Convert JPG and PNG images into a PDF with page size, order, and rotation controls.
Popular Tools
Discover our most‑used developer tools
Base64 Encoder and Decoder Online | UTF-8 Text Tool
Encode text to Base64 or decode Base64 to text with full UTF-8 support.
QR Code Generator Online | URL, Wi-Fi and vCard
Generate static QR codes for URLs, text, Wi-Fi, and contacts. Customize size/colors and download PNG/SVG—processed locally.
Color Converter & Picker | HEX, RGB, HSL, HSV, CMYK
Convert colors between HEX, RGB, HSL, HSV, and CMYK with a live picker and copy-ready values.
Get Started Free
No install or sign-up. Everything runs locally in your browser for speed and privacy.
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