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Developer, security and utility tools that help us work smarter every day.
118 tools
Open a network recording to find the slowest and largest requests, failures, third-party calls and credentials left in headers.
Open toolSee the EXIF, GPS and camera data an image is carrying, then download a copy with all of it removed.
Open toolPull readable text out of any binary and measure its entropy, to see what a file references and whether it is packed or encrypted.
Open toolList what an archive contains and flag traversal paths, disguised executables, encrypted entries and extreme compression ratios before extracting it.
Open toolGenerate and check time-based 2FA codes from a base32 secret, with a live countdown and clock-drift detection.
Open toolTurn plain text into a paginated A4 or Letter PDF with a chosen built-in font and size, generated in your browser.
Open toolPeel stacked HTML entity, percent, hex, escape, fromCharCode and Base64 layers off a payload without executing it.
Open toolInspect an image for signs of editing with error level analysis, edge mapping, least-significant-bit and channel views.
Open toolBuild a layered CSS box-shadow visually, with inset support and a light or dark preview, then copy the declaration.
Open toolConvert length, mass, volume, area, speed, time and temperature, showing every unit in the family at once.
Open toolBuild and sign a JSON Web Token with HS256, HS384 or HS512, using your own claims and secret.
Open toolRasterize SVG to PNG at 1× to 4× scale, with a transparent or white background, using your browser’s own renderer.
Open toolIdentify an unknown timestamp by decoding it as Windows FILETIME, Chrome WebKit, Apple Cocoa, HFS+, OLE, FAT and six more encodings at once.
Open toolRender PDF pages to PNG or JPEG at up to 3× resolution, one downloadable image per page, without uploading the file.
Open toolCombine PNG, JPEG, WebP, GIF or BMP images into one PDF, in the order you choose, entirely in your browser.
Open toolScan code, config or logs for leaked API keys, tokens, private keys and database passwords before you commit or share them.
Open toolRe-indent minified or messy JavaScript and TypeScript into readable code, with your choice of indentation and brace style.
Open toolRead the details a public Suno song link publishes, then save the track as an MP3.
Open toolValidate a JSON document against a JSON Schema and see exactly which fields fail and why.
Open toolConvert text to its binary (base-2) byte representation, or decode binary back to text.
Open toolCheck how crackable a password really is, based on known patterns and dictionaries, not just character-type rules.
Open toolBreak down text by letter frequency, a classic first step in cracking a substitution cipher.
Open toolEncode or decode text with a Caesar shift cipher, or crack one with an unknown shift using letter-frequency analysis.
Open toolGenerate placeholder paragraphs of classic Lorem Ipsum text.
Open toolQuery a JSON document with a JSONPath expression and see the matches.
Open toolClick anywhere on an uploaded image to sample its exact color as hex and RGB.
Open toolLook up a domain’s registration status, key dates, and nameservers via RDAP.
Open toolGenerate SEO, Open Graph, and Twitter Card meta tags for a page.
Open toolResize an image into every common favicon and app-icon size.
Open toolGenerate monochromatic, analogous, complementary, and triadic palettes from one base color.
Open toolWrite Markdown and see the sanitized, rendered preview side by side.
Open toolHide a short text message inside a PNG’s pixel data, or reveal one that’s already hidden.
Open toolBuild a linear or radial CSS gradient visually and copy the generated code.
Open toolTurn short text into a block-letter ASCII banner.
Open toolGenerate Discord’s dynamic timestamp markup for a date and time, in every display style.
Open toolTranspose a CSV, or convert it to TSV, YAML, or a Markdown table.
Open toolLook up what a well-known network port is used for, or generate a random ephemeral port for local dev.
Open toolInspect a JSON Web Key or JWKS document, field by field, without exposing private key material.
Open toolLook up the MIME type for a file extension, or the other way around.
Open toolLook up what an HTTP status code means, searchable by number or keyword.
Open toolConvert text to and from Base32, the encoding used for TOTP/2FA secret keys.
Open toolGenerate sortable ULIDs, or decode the creation timestamp embedded in an existing one.
Open toolConvert file sizes between decimal (KB, MB) and binary (KiB, MiB) units.
Open toolGenerate a QR code from text or a URL, or decode one from an uploaded image.
Open toolConvert a date and time from one timezone into several others at once.
Open toolConvert special characters to and from HTML entities like & and <.
Open toolRe-indent HTML markup into a consistent, readable style.
Open toolBeautify CSS for readability, or minify it down for production.
Open toolRe-indent a SQL query into a consistent, readable style.
Open toolCompare two blocks of text line by line, or two JSON documents field by field.
Open toolConvert between JSON and YAML in either direction.
Open toolStamp a diagonal text watermark across every page of a PDF.
Open toolExtract the plain text content of a PDF, page by page.
Open toolHash a password with bcrypt, or verify a password against an existing bcrypt hash.
Open toolEncrypt or decrypt text with a passphrase using AES-256-GCM.
Open toolExplain a cron expression in plain English and see its next 5 run times.
Open toolScan text for zero-width spaces, bidi overrides, and other invisible characters used to hide or disguise content.
Open toolConvert between Unicode domain names and their Punycode (xn--) form, to spot homograph phishing domains.
Open toolParse raw email headers and explain the Received chain and SPF/DKIM/DMARC results.
Open toolCheck a file’s name and actual signature for double extensions, disguised executables, and other red flags.
Open toolRead a PEM/DER X.509 certificate’s subject, issuer, validity, and public key details.
Open toolCompute an HMAC-SHA1/256/384/512 of a message with a secret key.
Open toolGuess what algorithm produced a given hash, based on its length and format.
Open toolCalculate a CIDR block’s network range, or classify an IPv4/IPv6 address as public, private, or reserved.
Open toolLook up a domain’s DKIM record for a selector you provide, and explain its tags.
Open toolLook up and explain a domain’s DMARC policy, tag by tag.
Open toolLook up and explain a domain’s SPF record, mechanism by mechanism.
Open toolLook up A, AAAA, MX, TXT, NS, and CNAME records for a domain.
Open toolBreak a User-Agent string down into browser, operating system, device type, and engine.
Open toolFetch a sitemap.xml and see whether it’s a URL list or a sitemap index, and how many entries it has.
Open toolFetch a domain’s robots.txt and break down its user-agent rules and sitemap references.
Open toolPaste HTTP response headers you already have and get the same security-header explanation.
Open toolFetch a URL and check which HTTP security headers it sends, and which are missing or weak.
Open toolBreak a URL down into its protocol, host, path, query parameters, and fragment.
Open toolCount working days between two dates, with optional weekend and holiday exclusion.
Open toolGenerate TypeScript interfaces from a JSON sample, ready to paste into your code.
Open toolDecode a JSON Web Token’s header and payload, and verify an HS256 signature with a secret.
Open toolSort, shuffle, deduplicate, or count a list of items, one per line.
Open toolSpell out a number in English words, including decimals.
Open toolFind the exact years, months, days, hours, minutes and seconds between two moments.
Open toolEncode or decode text with ROT13, or convert it to and from Morse code.
Open toolPull every email address out of a block of pasted text.
Open toolStrip repeated lines from a block of text, keeping the first occurrence of each.
Open toolTurn titles into clean, URL-safe slugs, one per line.
Open toolGenerate a cryptographically random password with the character types and length you choose.
Open toolScan a CSV for rows with missing columns or empty cells, with the exact line numbers.
Open toolCheck that XML is well-formed and re-indent it, with a line-and-column error if it isn’t.
Open toolConvert a JSON object or array into indented XML markup.
Open toolConvert CSV rows with a header line into a JSON array of objects.
Open toolConvert a JSON array of objects into a CSV file, flattening nested fields into dotted columns.
Open toolSort a JSON object’s keys alphabetically, ascending or descending.
Open toolEscape a raw string for embedding inside JSON, or unescape one back to plain text.
Open toolCheck whether a JSON document is well-formed, with a clear error message when it isn’t.
Open toolPull specific pages or page ranges out of a PDF into a new file.
Open toolCombine several PDFs into one, in the order you add them.
Open toolView a PDF’s title, author, producer, and creation date without opening it in a reader.
Open toolSee a file’s declared type, actual size, and what its first bytes say it really is.
Open toolCompute SHA-1, SHA-256, SHA-384, and SHA-512 checksums for any file, to verify it wasn’t altered.
Open toolRead the camera, exposure, and location data a JPEG or TIFF is carrying, if any.
Open toolCheck an image’s exact pixel dimensions, aspect ratio, megapixel count, and file size.
Open toolPaste a Base64 string or data URL and get back a viewable, downloadable image.
Open toolTurn an image into a Base64 data URL you can paste straight into CSS or HTML.
Open toolConvert between PNG, JPEG, and WebP. Transparent PNGs get a white background when converted to JPEG.
Open toolResize an image to exact pixel dimensions, with the aspect ratio locked by default.
Open toolShrink a JPEG, PNG, or WebP down to a target quality and see the size drop in real time.
Open toolCalculate a percentage of a number, what percentage one number is of another, and percentage change.
Open toolA straightforward calculator for everyday arithmetic.
Open toolConvert numbers between binary, octal, decimal and hexadecimal.
Open toolConvert colors between HEX, RGB and HSL, with a live picker preview.
Open toolTest a regular expression against sample text with live, highlighted matches.
Open toolConvert text between upper, lower, title, camel, snake, kebab and constant case.
Open toolCount words, characters, sentences, paragraphs and estimated reading time.
Open toolConvert between Unix timestamps and human-readable dates in your local time.
Open toolCompute MD5, SHA-1, SHA-256, SHA-384 and SHA-512 hashes of any text.
Open toolGenerate cryptographically random UUID v4 identifiers, one or many at a time.
Open toolPercent-encode or decode text and URLs for safe use in query strings.
Open toolConvert text to and from Base64, including full Unicode support.
Open toolFormat, minify, and validate JSON with a clear error message when it isn’t valid.
Open tool