Forever free tools
PDF, image, calculator, QR, converter, and data tools are all usable without payment or a required account.
Compress PDFs, convert images, calculate loans and tips, generate QR codes, convert units, and format data. Every tool runs in your browser with no upload and no sign-up.
PDF, image, calculator, QR, converter, and data tools are all usable without payment or a required account.
Files, values, and pasted content are processed in your browser. We never receive your documents, images, or calculations.
Any feature that touches a server, such as contact forms or account sync, discloses its data handling before you use it.
Percentage Calculator
Enter a percentage and a value to see the result instantly. Open the full calculator when you need tips, discounts, changes, or splits.
Built for daily work
Start with the job you are trying to finish, and jump straight into the right tool.
Shrink file sizes, merge documents, split pages, add watermarks, and protect PDFs in your browser.
Open toolResize, compress, convert, crop, rotate, and watermark JPG, PNG, WebP, and AVIF images locally.
Open toolMonthly payments, tip splits, body mass index, percentages, discounts, and more with instant results.
Open toolCreate custom colored QR codes with error correction and a center logo, then download PNG or SVG.
Open toolLength, weight, temperature, area, volume, speed, data size, time zones, and reference currency rates.
Open toolRemove duplicates, normalize rows, map columns, and export CSV, JSON, SQL, YAML, XML, or Excel.
Open toolWrite, preview, clean, and convert Markdown into HTML, email, PDF, or Word workflows.
Open toolCompare revisions, remove duplicates, normalize whitespace, count words, and prepare clean lists.
Open toolFeatured tools
A hand-picked set of high-value tools across PDF, image, calculator, QR, converter, and data workflows.
Compress PDF documents locally in browser memory without server uploads.
Open toolCompress JPG, PNG, WebP, and AVIF images locally with quality controls and before/after previews.
Open toolCalculate percentages three ways: X percent of Y, X as a percentage of Y, and the percent change between two values.
Open toolCreate QR codes with custom colors, error correction levels, sizes, margins, and an optional center logo, then download as PNG or SVG.
Open toolConvert lengths between millimeters, centimeters, meters, kilometers, inches, feet, yards, miles, and nautical miles instantly.
Open toolGenerate strong, secure random passwords with selectable length and character sets, using browser cryptography.
Open toolFormat, validate, inspect, search, and analyze JSON in code, tree, table, schema, and statistics views.
Open toolAnalyze JSON API responses for structure, nulls, repeated records, size, paths, and potential sensitive fields.
Open toolPrivate by default
Core tools run locally with browser APIs, whether you are compressing a PDF, converting an image, or calculating a payment. We measure tool usage without collecting uploaded file contents, pasted values, or output data.
Data processing noticeGuide library
Learn a format, load a working example, and continue directly inside the correct tool.
Structure a Markdown source file, control links and assets, preview target-specific output, and export reliable HTML, Word, or PDF documents.
Learn more Text productivityRemove unwanted whitespace, duplicate lines, invisible characters, and inconsistent punctuation while preserving a reviewable original.
Learn more JSON referenceReview strict JSON objects, arrays, strings, numbers, booleans, null values, escaping rules, and common differences from JavaScript object literals.
Learn moreReady when you are
No sign-up. No upload. No waiting. Open a tool and get back to work.