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Convertto

Online Developer Tools

Regex tester, cron builder, diff checker, timestamps, validators and generators.

Convertto's developer tools include a regex tester with live match highlighting, a cron expression builder with plain-English explanations, a diff checker, Unix timestamp and timezone converters, user-agent parsing, and generators for .gitignore, licenses, CSP headers and README badges.

41 tools in this category

All developer tools

7Z to ZIP ConverterConvert 7-Zip (.7z) archives into universal ZIP format.
API Request BuilderBuild an HTTP request visually and get it as curl, fetch, axios, Python, Go or PHP code.
Naming Convention ConverterConvert an identifier between every common naming convention at once.
Code Comment RemoverStrip comments from six language families without breaking string literals.
Cron Expression ParserTranslate a cron expression into plain English and see when it will next run.
Cron Next Run CalculatorSee the next fire times for a cron expression, with each field explained.
Content Security Policy GeneratorBuild a CSP header from common presets, with each directive explained.
Text Diff CheckerCompare two texts and highlight exactly what was added and removed.
Unified Diff & Patch GeneratorProduce a unified diff between two texts that git apply and patch can consume.
.env File ValidatorCheck a .env file for syntax errors, duplicate keys, exposed secrets and missing entries.
Font to Base64 & CSS GeneratorConvert font files directly into CSS @font-face data URIs.
Git Command BuilderBuild the exact git command for fifteen common tasks, with explanations and safety notes.
.gitignore GeneratorBuild a .gitignore file for your stack, with the entries people usually forget.
GraphQL FormatterFormat or minify a GraphQL query, mutation or schema, and inspect its depth.
GZIP to ZIP ConverterConvert GZ files into standard ZIP archives.
HTTP Security Header AnalyserPaste response headers and get a security grade, with what is missing and why it matters.
HTTP Status Code ReferenceLook up what any HTTP status code means and when to use it.
JSON Schema GeneratorInfer a JSON Schema from example data, detecting types, string formats and required keys.
Line Endings ConverterConvert between CRLF, LF and CR, and strip trailing whitespace.
Log File ParserParse Apache, Nginx or JSON log lines into a sortable table with traffic summaries.
MIME Type LookupFind the correct MIME type for any file extension, and vice versa.
OTF to TTF ConverterConvert OpenType (.otf) fonts to TrueType (.ttf) format.
RAR to ZIP ConverterExtract RAR archives and repackage contents into standard ZIP format.
Redirect Rule GeneratorGenerate redirect rules for Apache, Nginx, Netlify, Vercel and Next.js.
Regex ExplainerBreak a regular expression into tokens and explain each one in plain English.
Regex TesterTest regular expressions against sample text and see every match with its capture groups.
Semantic Version CheckerTest versions against a range, sort by precedence, or compare two releases.
SQL IN Clause BuilderTurn a pasted column of values into a safely quoted SQL IN clause, batched if needed.
Tabs to Spaces ConverterConvert indentation between tabs and spaces without disturbing alignment inside lines.
TAR to ZIP ConverterConvert uncompressed TAR archives into compressed ZIP files.
TTF to WOFF ConverterConvert TrueType (.ttf) fonts to Web Open Font Format (.woff).
TTF to WOFF2 ConverterConvert TrueType (.ttf) fonts to optimized WOFF2 web fonts.
URL BuilderCompose a URL from its parts with correctly percent-encoded query parameters.
URL ParserBreak a URL into protocol, host, path, query parameters and fragment.
User Agent ParserBreak down a user-agent string into browser, engine, operating system and device.
UUID InspectorIdentify a UUID version and variant, and extract the timestamp from v1, v6 and v7.
Format ValidatorValidate emails, UUIDs, IP addresses, credit card numbers, IBANs and semver strings.
WOFF to TTF ConverterConvert WOFF web fonts back to desktop TrueType (.ttf) fonts.
WOFF2 to TTF ConverterDecompress WOFF2 fonts back to TTF format.
ZIP to 7Z ConverterRepackage ZIP files into high-compression 7Z format.
ZIP to TAR ConverterConvert ZIP archive files to TAR format.

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