AI Engineering FoundryLoadingโฆ
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Small utilities for the everyday work around AI systems: inspecting API payloads, cleaning up config, checking model output. Everything runs in your browser, and nothing is sent to a server.
Convert, merge, and edit PDF and document files.
Convert
Convert PDF pages to JPG, PNG, or WebP images right in your browser. Pick the resolution, convert every page or a range, and download them one by one or as a ZIP.
Open tool โConvert
Extract selectable text from a PDF, page by page, and download it as a plain .txt file โ no OCR, so it reads the PDF's own text layer.
Open tool โConvert
Convert a PDF to Markdown: font size is used to guess headings, and bullet or numbered lines are kept as list items.
Open tool โConvert
Combine JPG, PNG, WebP, and other images into a single PDF. Set the page size, orientation, and margin, in the order you drop them.
Open tool โConvert
Turn plain text into a paginated PDF: pick the page size, font size, and margin, and long text is wrapped and split across pages for you.
Open tool โConvert
Convert a .eml email file to a PDF: subject, sender, recipients, date, and message body laid out on a page, with attachments listed by name.
Open tool โView, convert, and export images and graphics.
SVG
Preview SVG code live and safely, check its size and viewBox, fix common errors, and export it as PNG, a data URI, a CSS background, or an <img> tag.
Open tool โQR codes
Create QR codes for links, Wi-Fi logins, email, phone, and SMS. Set error correction and colors, then download a crisp SVG or PNG. Static codes, no tracking, no sign-up.
Open tool โFormats
Convert images between JPG, PNG, WebP, and AVIF, including from HEIC, TIFF, BMP, and GIF. Batch convert with quality control, all in your browser.
Open tool โiPhone
Convert iPhone HEIC photos to JPG, PNG, or WebP right in your browser, in batches, without uploading them anywhere.
Open tool โIcons
Make a complete favicon set from an image or a letter: favicon.ico, PNG icons, the Apple touch icon, Android icons, a web manifest, and the HTML to add them.
Open tool โEncoding
Encode an image as Base64 or a data URI, with ready-made CSS, HTML, and Markdown, or decode Base64 back into an image you can preview and download.
Open tool โTrim, join, normalise, record and inspect audio.
Edit
Cut an MP3, WAV or other audio file to the part you want: drag across the waveform, fine-tune the times, and save as MP3 or WAV โ in your browser.
Open tool โEdit
Join several audio files into one, in the order you choose, with optional gaps or crossfades โ mixed formats and sample rates are handled for you.
Open tool โEdit
Split an audio file into parts at points you click, into equal parts, every N seconds or at silences, and download each part or all of them as a ZIP.
Open tool โEdit
Make audio louder or quieter by decibels, normalise to a peak level, or to a loudness target (LUFS) for Spotify, YouTube, Apple Music or podcasts.
Open tool โEdit
Add a fade-in and fade-out to audio with linear, exponential, logarithmic, equal-power or S-curve shapes, and hear the result before saving.
Open tool โEdit
Speed up or slow down audio without changing the pitch โ or tape-style, where pitch follows speed โ from 0.25ร to 4ร.
Open tool โCompare, clean up, and transform text.
Text & code
Compare two texts or code files side by side, with changed words highlighted. Ignore whitespace or case, and export a unified .diff patch that git apply accepts.
Open tool โCount
Count words, characters, sentences, paragraphs, and lines as you type, with reading and speaking time. Check text against X, SEO title, and meta description limits.
Open tool โCase
Convert text to UPPERCASE, lowercase, Title Case, Sentence case, camelCase, PascalCase, snake_case, kebab-case, and more, line by line.
Open tool โCleanup
Clean up messy text: remove extra spaces, blank lines, invisible characters, and HTML tags, straighten quotes, and rejoin hard-wrapped lines.
Open tool โLines
Delete repeated lines from a list and keep the original order. Choose case sensitivity, whether to ignore surrounding spaces, and whether to keep the first or last copy.
Open tool โLines
Delete blank lines from text, or collapse runs of blank lines down to one so paragraphs stay separated.
Open tool โCite sources in APA, MLA, Chicago, Harvard, and IEEE, and organize your reading.
APA 7
Create APA 7th edition references and in-text citations for journal articles, books, chapters, web pages, and reports. Copy them with italics intact.
Open tool โMLA 9
Create MLA 9th edition Works Cited entries and in-text citations for journal articles, books, chapters, web pages, and reports.
Open tool โChicago 18
Create Chicago Manual of Style (18th edition) citations in notes-bibliography style, with the footnote, or author-date style, with the in-text citation.
Open tool โHarvard
Create Harvard references and in-text citations in the Cite Them Right style used by most UK and Australian universities.
Open tool โIEEE
Create numbered IEEE references for journal articles, books, chapters, web pages, and reports, as used in engineering and computer science.
Open tool โBibTeX
Generate a BibTeX entry from a source's details, or paste BibTeX from Google Scholar or Zotero and get it formatted in APA, MLA, Chicago, Harvard, or IEEE.
Open tool โTools for links, URLs, and sharing things on the web.
Encoding
Percent-encode text for URLs and query strings, or decode %20-style escapes back to text. Handles UTF-8, + as space, and double encoding.
Open tool โInspect
Break a URL into protocol, host, port, path, query, and fragment, and list every query parameter decoded. Export as JSON.
Open tool โAnalytics
Add utm_source, utm_medium, utm_campaign, and other UTM parameters to a URL for tracking campaigns in Google Analytics and other tools.
Open tool โPrivacy
Strip utm_*, fbclid, gclid, and other tracking parameters from links, and unwrap Google and Facebook redirect links. Clean one link or a whole message.
Open tool โSEO
Turn titles into clean URL slugs: lowercase, hyphenated, accents transliterated (รฉ โ e), with optional length limits and stop-word removal.
Open tool โNaming
Generate brandable domain name ideas from your keywords: prefixes, suffixes, pairings, and blends across .com, .io, .ai, .dev, and more.
Open tool โEveryday and technical calculators.
Calc
A fast online calculator with a keypad, keyboard input, brackets, percentages, square roots, and a history of your calculations. Exact decimals: 0.1 + 0.2 = 0.3.
Open tool โCalc
Free online scientific calculator: sin, cos, tan and inverses in degrees or radians, logs, powers, roots, factorials, ฯ and e, with history and 34-digit precision.
Open tool โPercent
Seven percentage calculators in one: percent of a number, what percent, percentage change, increase or decrease by a percent, percentage difference, and reverse percentages.
Open tool โRatio
Simplify ratios (including decimals), solve proportions like 3 : 4 = x : 20, and divide an amount in a given ratio, with the working shown.
Open tool โFractions
Add, subtract, multiply and divide fractions and mixed numbers exactly. Get the simplest form, mixed number, decimal (with repeating digits), and percent.
Open tool โPowers
Raise any number to any power: exact results for whole-number powers (even huge ones like 2ยนโฐโฐโฐ), plus negative, fractional and decimal exponents.
Open tool โConvert between units and formats.
Length
Convert between miles, kilometres, feet, metres, inches, centimetres, yards and more โ exact to the international yard, with a reference table and every unit at once.
Open tool โWeight
Convert pounds, kilograms, ounces, grams, stones, tons, carats and troy ounces, exact to the international pound (0.45359237 kg).
Open tool โTemperature
Convert Celsius, Fahrenheit, Kelvin and Rankine with the formula shown, plus an oven temperature and gas mark chart.
Open tool โArea
Convert acres, hectares, square feet, square metres, square miles and more, with exact factors and a quick-reference table.
Open tool โVolume
Convert litres, US and UK gallons, quarts, pints, cups, fluid ounces, cubic feet and more โ US and imperial units kept separate.
Open tool โSpeed
Convert mph, km/h, m/s, knots and feet per second, with the exact factor and a conversion table.
Open tool โLoans, interest, and money calculators.
Shopping
Work out a sale price and savings from a percentage off, stack an extra discount, or find the discount percentage or the original price.
Open tool โDining
Calculate the tip and total for a bill, split it between people, tip on the pre-tax amount, and round up the total or each share.
Open tool โSharing
Split a bill evenly, or share trip and group expenses: record who paid what and get the fewest payments to settle up.
Open tool โTax
Add VAT, GST, or sales tax to a net price, or take it out of a tax-inclusive price, at any rate.
Open tool โShopping
Compare the price per 100 g, per kg, per litre, per ounce, or per item across pack sizes to find the best value.
Open tool โFormatting
See how an amount is written in different countries: symbols, separators, and decimals for 30 currencies and 14 locales, with the JavaScript code.
Open tool โDates, durations, and time zones.
Age
Calculate exact age in years, months, and days from a date of birth, plus total months, weeks, and days, and how long until the next birthday.
Open tool โDuration
Count the days between two dates, and see the difference in years, months, weeks, weekdays, hours, and minutes.
Open tool โDate maths
Add or subtract days, weeks, months, and years from a date to find a deadline, due date, or anniversary.
Open tool โWork days
Count working days between two dates, or add working days to a date, skipping weekends and US or UK public holidays.
Open tool โWeekday
Find the day of the week for any date, past or future, plus its day of the year, ISO week, and quarter.
Open tool โISO week
Find the ISO 8601 week number for any date, with the week's Monday-to-Sunday dates, the US week number, and every week of the year.
Open tool โPasswords, 2FA codes, hashes, and encryption.
Passwords
Generate strong random passwords in your browser: choose length and character types, skip look-alike characters, and make up to 500 at once.
Open tool โPasswords
Generate strong, memorable passphrases from the EFF's 7,776-word list, picked with secure randomness. Choose word count, separators, and capitals.
Open tool โPasswords
Generate random 4, 6, or 8-digit PINs that skip easy guesses like 1234, 1111, years, and dates. Secure randomness, generated in your browser.
Open tool โPasswords
Check how strong a password really is: estimated crack times, the words and patterns that make it guessable, and tips to improve it. Never leaves your browser.
Open tool โKeys
Generate random strings, API keys, and secret keys: pick the length and characters (hex, Base64url, alphanumeric, custom) or a key size in bytes. Cryptographically secure.
Open tool โ2FA
Get live 2FA codes from a TOTP secret or otpauth:// link, check a code, or create a new secret with a QR code for authenticator apps. RFC 6238.
Open tool โFormat, convert, encode, and test: JSON, CSV, XML, YAML, SQL, CSS, JavaScript, JWTs, regex, and more.
Data
Format, validate, and minify JSON in your browser. Paste it, upload a file, or load it from a URL. Errors show the exact line and column.
Open tool โC# / .NET
Paste JSON and get C# model classes or records, ready for System.Text.Json or Newtonsoft.Json. Nested objects, arrays, nullable types, dates, and GUIDs are inferred for you.
Open tool โTypeScript
Paste JSON and get TypeScript interfaces or type aliases, with nested objects named for you, optional and nullable fields detected from every array item, and union types.
Open tool โSQL
Turn a JSON array into a CREATE TABLE with inferred column types and batched INSERT statements for PostgreSQL, MySQL, SQL Server, or SQLite.
Open tool โSQL
Format and beautify SQL queries for SQL Server (T-SQL), PostgreSQL, MySQL, Oracle, and more. Set the indentation, keyword case, and layout, and get the exact line of any syntax error.
Open tool โData
Format, validate, and minify XML (config files, .csproj, SOAP, RSS) in your browser. Entities, CDATA, and mixed content are kept exactly as written, and errors show the line and column.
Open tool โTools for posts, profiles, and sharing.
Images
Resize one photo for Instagram, Facebook, X, LinkedIn and YouTube in one go โ crop to fill, fit inside a colour, or fit on a blurred copy โ and download every size as a ZIP.
Open tool โBanners
Design a header or cover banner for X, LinkedIn, Facebook or YouTube: background colour, gradient or photo, your title and tagline, and a logo โ at each platform's exact size.
Open tool โThumbnails
Make a 16:9 YouTube thumbnail with bold outlined text, a badge, a background photo or gradient, and your logo โ export up to 3840 ร 2160 as PNG or JPG.
Open tool โLink previews
Create a 1200 ร 630 link-preview image for a page or article โ title, site name, badge, logo and background โ ready to use as og:image.
Open tool โCaptions
Keep line breaks in Instagram and social captions with invisible spacers, tidy spacing, turn dashes into bullets, and move, de-duplicate or remove hashtags.
Open tool โLimits
Count characters for X, Instagram, Threads, LinkedIn, TikTok, YouTube, Pinterest, Bluesky and more at once โ with X's weighted count for links, emoji and CJK text.
Open tool โHandy tools for day-to-day tasks.
Time
Add and subtract hours and minutes, find the time after or before a duration, or the time between two clock times, including overnight.
Open tool โHealth
Calculate your body mass index in metric or US units, see your WHO weight category on a scale, and the healthy weight range for your height.
Open tool โRandom
Generate random whole numbers in any range, with or without repeats: dice rolls, lottery picks, and PINs, using your browser's cryptographic randomness.
Open tool โRandom
Pick random names or options from a list, shuffle a list into random order, or split it into random groups or teams, fairly.
Open tool โTrips, fuel, and vehicle calculators.
Trips
Work out what a drive costs in fuel from distance, fuel economy (L/100 km, mpg or km/L) and price โ round trips, repeat trips and splitting between passengers included.
Open tool โTrips
Find your car's real fuel consumption from odometer readings and fill-ups โ one tank or a log of fill-ups โ in L/100 km, mpg and km/L, plus cost per km or mile.
Open tool โTrips
Calculate what a stay costs under hourly, first-hour, per-30-minute or flat daily tariffs with a daily cap and grace period โ and compare options.
Open tool โMaps
Convert coordinates between decimal degrees, degrees-minutes-seconds, decimal minutes and UTM โ paste any format, or use your location.
Open tool โMaps
Measure the straight-line distance between two or more GPS coordinates on the WGS84 ellipsoid, in km, miles and nautical miles.
Open tool โMaps
Find the bearing between two coordinates (initial, final and rhumb line) and the midpoint, or the point reached from a start, bearing and distance.
Open tool โTools for running and growing a business.
Documents
Create a professional PDF invoice with your logo, line items, per-rate tax, discounts, shipping and amount paid โ free, no sign-up, made in your browser.
Open tool โDocuments
Make a PDF payment receipt with items, tax, amount received and payment method, in any currency.
Open tool โDocuments
Prepare a PDF quote or estimate with line items, tax, a valid-until date and your terms.
Open tool โDocuments
Create a PDF purchase order for a supplier โ items, quantities, prices, tax, delivery date and a signature line.
Open tool โDocuments
List expenses by date and category, subtract any advance, and export a signed-off PDF expense report or CSV.
Open tool โDocuments
Design a company letterhead PDF with your logo, colours and contact details โ blank as a template, or with your letter typed in.
Open tool โColors, layouts, and design helpers.
Colour
Pick any colour with a saturation/brightness square, from anywhere on your screen (EyeDropper), or from a photo โ and get it in HEX, RGB, HSL, OKLCH and more.
Open tool โColour
Convert any colour between HEX, RGB, HSL, HSV, HWB, CMYK, Lab, LCH, OKLab and OKLCH, with the nearest CSS colour name.
Open tool โPalettes
Build a palette from one colour โ a 50โ950 shade scale or complementary, analogous, triadic and other harmonies, worked out in OKLCH โ and export CSS, Tailwind, SCSS or JSON.
Open tool โColour
Pull the main colours out of a photo or logo, with how much of the image each covers, and export them as CSS variables or JSON.
Open tool โAccessibility
Check text and background colours against WCAG 2.2 AA and AAA, see the exact contrast ratio, and get the closest colour that passes.
Open tool โCSS
Design linear, radial and conic CSS gradients with any number of colour stops and vivid OKLCH blending, and copy the CSS.
Open tool โOrganize, rename, and inspect files.
ZIP
Zip files and whole folders in your browser, keeping the folder structure, with a choice of compression level โ nothing is uploaded.
Open tool โExtract
Open ZIP, 7z, RAR, TAR, .tar.gz and .gz files in your browser, including password-protected ones, and save the files one by one, as a ZIP, or straight into a folder.
Open tool โTAR
Bundle files and folders into a .tar or .tar.gz archive, with long and non-English file names kept intact.
Open tool โgzip
Compress files to .gz at the level you choose, or decompress .gz files back to the original, with the size saving shown.
Open tool โRename
Rename many files at once with a pattern, numbering, find & replace (with regex), case changes and new extensions โ preview everything, then download renamed copies.
Open tool โClean
Make file names safe for Windows, Mac, Linux and URLs: remove forbidden characters, replace accents and spaces, and fix reserved names like CON.
Open tool โ