UD5 Toolkit
Image Steganography Encoder - Online Hide Text in Picture Pixels
Hide a secret message within an image by modifying LSB of pixels. Also decode. Pure canvas manipulation, local only. Fun privacy tool.
Encoder Tools - Text & Data Encoding
9+ toolsBase58 Encoder & Decoder - Online Bitcoin-Style Address Tool
Encode or decode data to/from Base58 (Bitcoin alphabet). Useful for cryptocurrency address generation testing. Fully local, no data sent.
SVG URI Encoder - Online Optimized for CSS Background
Paste an SVG and get an optimized, URL‑encoded data URI for use in CSS backgrounds. Reduces file size and escapes characters.
SVG to Data URI & CSS Background - Online Optimized
Optimize an SVG and convert it into a URL‑encoded data URI ready for CSS backgrounds. Strip unnecessary attributes. All local.
SVG to Data URI Encoder - Online Inline SVG Generator
Paste an SVG and get a ready‑to‑use data URI for CSS backgrounds or img tags. Optimized with URL encoding. All local.
MD5 Hash Generator - Online Quick Checksum
Generate the MD5 hash of any text string. For quick integrity checks. All local computation.
Audio to Base64 Converter - Online Embed Sound in HTML
Encode short audio clips into Base64 data URIs for direct embedding in HTML5 <audio> tags. No external files needed.
Batch Image to Base64 Encoder - Online Multiple Files
Convert multiple images to Base64 data URIs at once. Copy individually or as a JSON array. Great for inline assets. Local.
Image to Base64 Converter - Online Encode Picture to Text
Transform any image into a Base64 data URI for embedding directly into HTML, CSS, or JSON. Drag and drop support. Entirely browser-side conversion.