⚙️ Dev Tools Tools

Convert any title or phrase into a clean URL-safe slug.

Generate cryptographically random UUID v4 identifiers, one or many at a time.

Compute SHA-1, SHA-256, SHA-384 and SHA-512 hashes of any text in your browser.

Encode any text to Base64 or decode a Base64 string back to plain text.

Pretty-print, validate and minify JSON locally in your browser.

Test, debug and visualise JavaScript regular expressions with live match highlighting and capture groups.

Convert between HEX, RGB, HSL and OKLCH, check WCAG contrast ratios, and generate a tonal shade strip.

Decode, verify, and sign JSON Web Tokens locally in your browser — secrets never leave your device.

Percent-encode or decode URLs and query strings instantly in your browser.

Convert numbers between binary, octal, decimal and hexadecimal at once.

Convert CSV to a JSON array of objects, or JSON back to CSV, in your browser.

Build linear and radial CSS gradients visually and copy the code.

Convert text to binary and binary back to text, in your browser.

Convert an image to a Base64 data URI you can embed in HTML or CSS.

Translate text to Morse code and Morse code back to text.

Encode text to HTML entities or decode entities back to text.

Break a URL into its protocol, host, path, query parameters and more.

Convert text to hexadecimal and hex back to readable text.

Visually build a CSS box-shadow and copy the code.

Calculate width or height to keep an aspect ratio, or simplify a ratio.

Check text and background color contrast against WCAG accessibility levels.

Encrypt and decrypt text with classic ciphers: Caesar shift, ROT13 and Atbash.

Escape a string for use inside JSON, or unescape a JSON string.

Build campaign tracking URLs with UTM parameters.

Search and look up HTTP status codes and their meanings.

Look up ASCII character codes in decimal, hex and binary.

Calculate pixels per inch from screen resolution and size.

Generate a responsive CSS clamp() for fluid font sizes and spacing.

Convert between bytes, KB, MB, GB, TB in both decimal (SI) and binary (IEC) units.

Translate a cron expression into plain English and see the next scheduled run times.

Generate harmonious color palettes — complementary, analogous, triadic, and more.

Perform AND, OR, XOR, NOT, and bit-shift operations on integers with binary display.

Convert px to rem, em, vw, pt, and other CSS units with a configurable base font size.

Minify JSON by removing whitespace and comments, and see the size reduction.

Calculate the specificity of any CSS selector and compare multiple selectors.

Format, prettify, or minify XML with syntax validation and instant error feedback.

Generate random colors in hex, RGB, and HSL with one click or auto-generate on lock.

Decode 4-band and 5-band resistor color codes to find resistance and tolerance.

Calculate network address, broadcast, host range, and usable hosts from an IP and CIDR.