Reviewed tools
Reviewed browser tools
18 reviewed tools·7 categories·Limits and data handling checked
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Formatters & Beautifiers
Format and beautify code, JSON, XML, SQL and more1🔄
Encoders & Decoders
Encode and decode Base64, URL, HTML, JWT and more3🔄Base64 Encoder/DecoderEncode UTF-8 text or a local file as standard Base64 or Base64URL, validate a pasted value strictly, and preserve binary payloads without uploading them.🔗URL Encoder/DecoderEncode or decode text in the right URL context, inspect a link locally, then make a share-safe copy without accidentally exposing visible credentials or common token parameters.🎫JWT DecoderInspect a three-part JWS locally, read UTF-8 claims and time context, and verify an exact HS256, HS384, or HS512 signature with a known secret.
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Generators
Generate UUIDs, passwords, lorem ipsum, hashes and more5🆔UUID GeneratorGenerate cryptographically random UUIDv4 or ordered UUIDv7 batches, inspect their RFC version and timestamp, and download the results locally.🔑Password GeneratorGenerate one or more local password values with browser Web Crypto, explicit compatibility settings, a configuration-specific entropy figure, and a clear-on-finish control.🔐Hash GeneratorHash UTF-8 text or one local file with a selected SHA algorithm, copy Hex/Base64/Base64URL output, and compare a trusted checksum without uploading the source.🎯Regex TesterTest JavaScript regex patterns in a bounded local worker, inspect captures and offsets, preview replacements, and spot common backtracking risks without mistaking a browser test for production proof.⏰Cron Expression GeneratorBuild a traditional five-field cron schedule with editable fields or presets, then validate and preview its next local or UTC runs.
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Converters
Convert between formats like JSON to YAML, CSV to JSON, Markdown to HTML5📊CSV to JSON ConverterConvert CSV or TSV files and pasted records to a string-preserving JSON array without breaking quoted delimiters, line breaks, or escaped quotes.📑Markdown to HTMLConvert CommonMark and GFM source to a safe local HTML fragment, then review an image-request-free preview, structure hints, and the exact copyable output.🕐Unix Timestamp ConverterConvert a Unix timestamp, a date-and-time picker value, or an ISO date-time locally while making the unit, time zone, precision, and daylight-saving assumptions visible.📊JSON to CSVConvert a JSON array of objects to a deliberate CSV or TSV export, with a visible column plan, correct quoting, local file support, and optional spreadsheet-formula protection.📊TSV to CSVConvert tab-separated rows to CSV locally without splitting quoted tabs, embedded line breaks, or escaped double quotes.
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Text Tools
Word counter, case converter, diff checker, string utilities2🔤Word CounterCount words, visible Unicode characters, sentences, paragraphs, and lines locally, then use an optional target, repetition context, and transparent pace estimates to plan a draft.🔍Text Diff CheckerCompare two texts or local files with an exact diff when practical, a transparent whole-file replacement summary when it is not, and a strict patch for exact line comparisons.
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Finance & Money
Calculators for loans, salary, interest, discounts, and everyday money decisions. No signup, no data collected.1⚙️