API Reference

Format, minify, and validate JSON in one place.

Fix broken JSON — trailing commas, single quotes, unquoted keys, and more.

Escape special characters in a string for safe embedding in JSON.

Unescape a JSON-encoded string back to human-readable text.

Convert a JavaScript object literal to valid, spec-compliant JSON.

Sort all object keys alphabetically (A→Z or Z→A), deeply nested.

Compare two JSON objects and highlight added, removed, and changed fields.

Run JSONPath expressions to extract data from JSON.

Flatten nested JSON into a single-level object with dot-notation keys.

Restore a flat dot-notation object back to a nested JSON structure.

Analyze JSON byte size, key count, nesting depth, and type breakdown.

Search for keys or values anywhere in a JSON document.

Convert JSON to YAML format.

Convert YAML to JSON format.

Convert a JSON array of objects to CSV rows.

Parse CSV and convert each row to a JSON object.

Convert JSON to well-formed XML with a configurable root tag.

Parse XML and convert it to JSON.

Convert JSON config objects to TOML format.

Generate SQL INSERT statements from a JSON array.

Generate TypeScript interfaces from JSON.

Generate Python dataclasses from JSON.

Generate Go structs with JSON tags from JSON.

Generate Java POJOs from JSON.

Generate C# classes from JSON.

Generate Rust structs with Serde from JSON.

Generate a Zod validation schema from JSON.

Validate JSON data against a JSON Schema (Draft 7/2019/2020).

Infer a JSON Schema from an example JSON document.

Decode and inspect JWT header, payload, and expiry.

Count GPT tokens in any JSON or text (cl100k_base encoding).

Generate QR codes for URLs, WiFi, vCards, SMS, and more.

Generate barcodes in Code128, EAN-13, UPC-A, and more formats.

Generate secure, random passwords with custom rules.

Encode text to Base64 or decode Base64 back to text.

Encode text to Base32 or decode Base32 back to text.

Convert text to hexadecimal or decode hex back to text.

Convert text to binary bits or decode binary back to text.

Convert text to Unicode char codes or decode char codes back to text.

Percent-encode URLs or decode %xx sequences back to text.

Encode special chars to HTML entities or decode them back.

Generate MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes.

Generate HMAC signatures using SHA-1, SHA-256, SHA-384, or SHA-512.

Encrypt or decrypt text using the Caesar shift cipher.

Apply ROT47 rotation to all printable ASCII characters.

Encrypt or decrypt text using the Vigenère polyalphabetic cipher.

Apply the Atbash cipher — A↔Z, B↔Y, C↔X, etc.

XOR text against a key — supports UTF-8, hex, or decimal keys.

Encode text to Morse code or decode Morse code back to text.

Convert text to NATO phonetic alphabet words or reverse.

Substitute letters with their position in the alphabet (A=1, B=2, …).

Parse IPv4 or IPv6 addresses and show type, hex, binary, and decimal.

Break a URL into its components: protocol, host, path, query params, and hash.

Make URLs and IPs safe to share in reports by defanging them.

Convert MAC addresses between colon, hyphen, dot, and plain formats.

Extract all IPv4 and IPv6 addresses from a block of text.

Extract all URLs from a block of text.

Extract all email addresses from a block of text.

Query any DNS record type for a domain using DNS-over-HTTPS.

Look up domain registration and ownership details via RDAP.

Calculate network and host ranges from a CIDR or IP + mask.

Check if an IP address appears on 15 common DNS blacklists.

Inspect HTTP response headers and audit security headers.

Detect your public IPv4 and IPv6 addresses.

Check DNS propagation across Google, Cloudflare, and Quad9.

Check whether an IP address falls inside a given subnet (CIDR).

Look up ASN, organization, and geolocation for an IP address.

Comprehensive domain report: WHOIS, DNS records, and IP geolocation in one view.

Check if a domain name is available for registration.

Validate an email address: syntax, MX records, SPF, and DMARC.

See what your browser reveals: IP, user agent, screen, timezone, and more.

Check if a host is reachable and measure round-trip latency.

Trace the network path from this server to any host.

Look up and parse the SPF record for a domain.

Look up a DKIM public key record for a domain and selector.

Look up and parse the DMARC policy for a domain.

Check if a TCP port is open on a host.

Connect to any host and port and see the service banner — like telnet.

Look up MX records for a domain to find its mail servers.

Check SPF records for a domain and parse the policy.

Check DMARC policy for a domain.

Look up DKIM public key for a domain and selector.

Look up BIMI record for a domain's brand logo indicator.

Check MTA-STS policy for a domain to enforce TLS for email.

Look up SMTP TLS Reporting (TLSRPT) record for a domain.

Paste raw email headers to analyze routing, delays, and auth results.

Build a valid SPF TXT record from a form.

Build a valid DMARC TXT record from a form.

Run a full email health report for a domain.

Convert text between UPPER, lower, Title, camelCase, snake_case, and more.

Find and replace text with optional regex, case sensitivity, and global mode.

Sort lines alphabetically, numerically, or in reverse.

Remove duplicate lines from text, with optional case-insensitive matching.

Keep or remove lines that match a pattern or regex.

Count words, characters, lines, sentences, and paragraphs.

Reverse characters, words, or lines.

Compare two texts side-by-side and highlight added, removed, and unchanged lines.

Prefix each line with its line number.

Convert Unix timestamps to human-readable dates and vice versa.

Calculate the exact difference between two dates.

Resize images to exact dimensions or by percentage in your browser.

Compress images with adjustable quality and format selection.

Convert images between JPEG, PNG, and WebP formats instantly.

Crop images by specifying exact pixel coordinates and dimensions.

Rotate images by any angle and flip horizontally or vertically.

Apply filters and adjustments to images with live preview.

Add text watermarks to images with custom font, position, and opacity.

Convert images to Base64 data URIs and decode Base64 back to images.

Inspect image metadata: dimensions, size, type, aspect ratio, and more.

Create custom logos with text, shapes, and gradients

Crop and export photos to official passport dimensions for any country.

Tile one image into a print-ready grid sheet at any size.

Decode and inspect X.509 PEM certificates.

Decode and verify a Certificate Signing Request.

Compute SHA-1, SHA-256, and SHA-512 fingerprints of a certificate.

Convert between PEM, DER, and Base64 certificate formats.

Generate a self-signed X.509 certificate and key pair in your browser.

Generate a Certificate Signing Request and private key.