Developer
Regex, cron, CSS, formatters and lookups for the day-to-day tools developers reach for.
- Live
Regex tester
Test JavaScript regular expressions against any text — see matches, capture groups, and replacements live, in your browser.
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Diff viewer
Compare two pieces of text side by side — line, word, or character diff — privately in your browser.
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Lorem ipsum generator
Generate placeholder text — paragraphs, sentences, or words — instantly, with optional HTML tags.
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Slugify
Turn any title into a clean, URL-safe slug — Unicode aware, with separator and stop-word options.
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Cron expression builder
Build, validate and explain cron expressions — see the next 5 runs and a plain-English description.
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Cubic-bezier editor
Visually design CSS cubic-bezier easing curves — drag the handles, preview the motion, and copy the CSS.
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CSS box-shadow generator
Design CSS box-shadow values with live preview — offsets, blur, spread, opacity, and inset.
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CSS border-radius generator
Visually design CSS border-radius — uniform, per-corner, and elliptical — with live preview.
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CSS gradient generator
Build linear, radial, and conic CSS gradients — drag stops, pick colors, copy the CSS.
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SQL formatter
Pretty-print SQL queries — PostgreSQL, MySQL, SQLite, BigQuery and standard SQL — privately in your browser.
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YAML formatter
Format and validate YAML, or convert between YAML and JSON — privately in your browser.
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XML formatter
Pretty-print, minify, and validate XML — entirely in your browser.
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GraphQL formatter
Pretty-print and validate GraphQL queries, mutations, and schemas — privately in your browser.
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JSON Schema validator
Validate JSON data against a JSON Schema — see every error with its path — privately in your browser.
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HTTP status code lookup
Look up any HTTP status code — 1xx through 5xx — with a plain-English description.
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MIME type lookup
Look up MIME types by file extension or search by content type — covers images, video, audio, documents, and fonts.
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