Developer Tools

Compare two texts instantly and see exactly what changed — line by line, color-coded, with summary stats. No server, no sign-up, no tracking. Everything runs in your browser. Compare ⇄ Swap Clear Ignore whitespace Case-insensitive Side by Side Unified Copy Result Original Modified 0 Added 0 Removed 0 Changed 0 Unchanged Diff Result Enter text above and click Compare to see the diff. Copied to clipboard! How It Works The tool implements a Longest Common Subsequence (LCS) algorithm in pure JavaScript — the same foundation used by git diff. It compares your texts line by line, then applies character-level diffing on changed lines so you can see exactly which characters were inserted or deleted. ...

Bill Details Bill Amount $ Tip Percentage 18% No Tip 15% 18% 20% 25% Number of People Options Round up per-person amount (to nearest dollar) Tip on pre-tax amount (toggle off = tip after tax) Tax Amount ($) $ Custom split (unequal amounts) Calculate Split ...

Convert TOML and INI configuration files to JSON — or convert JSON back to TOML. Paste your config, click Convert, and get clean output instantly. No installation, no server upload, everything runs in your browser. Presets: Cargo.toml pyproject.toml config.ini JSON Sample Pretty-print JSON Minify JSON output TOML / INI Input Clear Copy JSON Output Clear Copy TOML/INI → JSON ⇄ JSON → TOML How It Works TOML/INI to JSON — Paste your config file in the left panel and click TOML/INI → JSON. The tool auto-detects whether the input is TOML or INI format. ...

Browse and search the Unicode character set. Pick a category or type a character name — click any result to copy it, along with its code point, HTML entity, CSS value, and UTF-8 bytes. ✕ Related tools: HTML Entity Encoder Emoji Picker Morse Code Translator How to Use Browse by category — click a category button (Arrows, Math, Currency, etc.) to see all characters in that group. Search — type a character name like arrow left or a code point like U+2192 to filter across all categories. Click any character — the detail panel shows the character, Unicode code point, HTML entities (decimal and hex), CSS content value, and UTF-8 byte sequence. Each field has its own Copy button. What Each Field Means Field Example Use it when… Code Point U+2192 Referencing a character in documentation HTML (decimal) → Embedding in HTML without encoding issues HTML (hex) → Same as above, hex form CSS content '\2192' Using characters in ::before / ::after pseudo-elements UTF-8 bytes 0xE2 0x86 0x92 Working with raw byte streams or file encoding Related Tools HTML Entity Encoder — encode and decode HTML entities in bulk Emoji Picker — browse and copy emoji with skin-tone and keyword search Morse Code Translator — convert text to Morse code and back

Encoding Format Format: Base64 URL Encode HTML Entities Hex Binary Octal ASCII Codes Unicode Escape (\uXXXX) JWT Decode (header.payload) Chain: — Step 1 — Base64 URL Encode HTML Entities Hex Binary Unicode Escape → — Step 2 — Base64 URL Encode HTML Entities Hex Binary Unicode Escape Run Chain Auto-detect format AUTO Input 0 chars Encode Decode Clear ⇅ Swap Input / Output Output 0 chars Copy Output Recent Conversions (Last 5) No conversions yet. What is an Encoder/Decoder? Encoding transforms text or binary data into a different representation so it can be safely transported, stored, or embedded in a target medium. Decoding reverses the process to recover the original content. Unlike encryption, encoding is not a security mechanism — the transformation is entirely reversible and publicly defined. Common uses include transmitting binary data over text-based protocols, embedding special characters safely in HTML or URLs, and inspecting authentication tokens. ...

URL Encoder / Decoder Mode: Encode Decode Scope: Component (encodeURIComponent) Full URL (encodeURI) Input 0 chars Encoded Output 0 chars Encode Copy Result Clear ⇅ Swap Auto-detect ON encodeURIComponent — Encodes all characters except: A–Z a–z 0–9 - _ . ! ~ * ' ( ). Best for encoding individual query parameters or path segments. Encoded Character Breakdown Original Encoded Unicode Note How It Works URL encoding (percent-encoding) converts characters that are not safe for use in URLs into a %XX format, where XX is the hexadecimal value of the character’s UTF-8 byte(s). ...

Convert between YAML and JSON instantly in your browser. Paste your input and the tool auto-detects the format. YAML ↔ JSON Converter Convert Sample YAML Sample JSON Clear Indent: 2 spaces 4 spaces Input (YAML or JSON) Output Copy Related: Format JSON → JSON Formatter ...

Paste YAML or JSON below — validate, convert, or format it instantly. No data leaves your browser. ...