Useful tools, without the nonsense.

Format, validate and minify JSON directly in your browser.

Validate JSON syntax and pinpoint parsing errors.

Convert an array of JSON objects into CSV locally.

Convert CSV rows into JSON objects without uploading data.

Encode and decode UTF-8 text as Base64 locally.

Encode or decode URL components safely.

Escape HTML special characters or decode entities.

Inspect JWT header and payload locally without verifying or sending the token.

Generate one or many cryptographically random UUID v4 values.

Convert Unix timestamps to dates and dates back to Unix time.

Test JavaScript regular expressions against text with highlighted matches.

Compare two texts line-by-line and see additions, removals and changes.

Parse URL query parameters into readable JSON.

Convert integers between binary, octal, decimal and hexadecimal.

Resize JPG, PNG or WebP images locally in your browser.

Re-encode images at adjustable quality without uploading them.

Inspect image width, height, type and file size locally.

Convert a local image into a Base64 data URI.

Preview and download an image encoded as a data URI.

Calculate network, broadcast, mask and host range from an IPv4 CIDR.

Convert IPv4 addresses between dotted decimal, integer, hexadecimal and binary.

Convert IPv4 CIDR prefixes and subnet masks.

Quickly look up common TCP/UDP service port numbers.

Inspect a user-agent string and identify browser, OS and device class.

Convert bytes, KB, MB, GB, KiB, MiB and GiB.

Convert Celsius, Fahrenheit and Kelvin.

Calculate the precise difference between two dates.

Generate SHA-1, SHA-256, SHA-384 or SHA-512 hashes locally.

Generate secure random strings with configurable character sets.

Generate strong random passwords locally with configurable length and symbols.

Calculate SHA-256, SHA-384 or SHA-512 for a local file without uploading it.

Calculate cryptographic checksums for text.

Estimate password strength locally without sending the password anywhere.

Compare two hashes safely while ignoring case and whitespace.

Count words, characters, lines, sentences and estimated reading time.

Convert text to upper, lower, title, sentence, camel, snake or kebab case.

Turn titles into clean URL-friendly slugs.

Sort lines ascending, descending, numerically or by length.

Remove duplicate lines while preserving the first occurrence.

Normalize spaces, blank lines and line endings.

Reverse characters, words or line order instantly.

Generate placeholder paragraphs, sentences or words.

Replace plain text or regular-expression matches.

Convert lines into quoted, comma-separated or JSON-style lists.

Convert comma/JSON-style lists back into one-item-per-line text.

Build campaign URLs with UTM source, medium, campaign, term and content tags.

Break a URL into protocol, host, port, path, query and fragment.

Generate title, description, canonical and robots meta tags.

Create a simple robots.txt with crawl rules and sitemap location.

Turn a list of URLs into a basic sitemap.xml file.

Generate alternate-language hreflang link tags.

Generate and validate a canonical URL link tag.

Preview a social card and generate Open Graph/Twitter meta tags.

Build basic Organization, SoftwareApplication or Article JSON-LD.

Generate common favicon and web-app icon link tags.

Build a linear CSS gradient and copy the generated CSS.

Convert HEX colors to RGB/HSL and preview the result.