Encode or decode URLs with percent-encoding. Swaps input/output for quick bidirectional conversion. Code never leaves your device — formatting and validation run locally in your browser.
Content reviewed October 2026 · About Toolzum
Encode or decode text using Base64, Base64URL, URL encoding, HTML entities, Hex, Binary, ROT13, UTF-8, and Unicode escape schemes.
Encodes text or small files into Base64 strings and decodes them back with automatic MIME-type detection for binary safety. Code never leaves your device — formatting and validation run locally in your browser.
Convert between hexadecimal bytes and ASCII text. Supports custom delimiters and real-time bidirectional conversion. Code never leaves your device — formatting and validation run locally in your browser.
Renders a scannable QR code from any text or URL with a client-side Reed-Solomon encoder at fixed high error correction. Customize size, colors, and center logo, then download the PNG — free, local, no signup.
TIFF to HEIC output is not produced here — TIFF input may not decode in browsers, and Canvas has no HEIC encoder, so conversion fails locally. Convert TIFF to PNG/JPG/WebP instead — local, unlimited saves.
Percent-encoding (URL encoding) replaces unsafe URL characters with % followed by two hex digits. Spaces become %20, special characters become %XX. This ensures URLs are transmitted correctly over HTTP.
Encode when building URLs programmatically — query strings, form data, redirect URLs. Decode when reading encoded URLs you received from APIs or webhooks.
Yes. Non-ASCII characters like emojis, accented letters, and CJK characters are properly encoded as UTF-8 byte sequences (e.g., é becomes %C3%A9).
Yes. Paste a full URL or just the query parameters. The tool can encode/decode the entire string or just specific parts.
Yes. All encoding and decoding happens in your browser. No data is sent to any server.
Query String Parser
Parse and inspect URL query parameters as structured key-value pairs. Decodes URL-encoded values and displays them in a readable JSON format.
URL Parser
Parse any URL into its components — protocol, hostname, path, query parameters, hash, and more with copy-to-clipboard. Host, path, query, and fragment split with decoding — debug redirect chains precisely. Runs locally, free, no signup.