Useful tools for modern engineers.

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Convert Images

Choose the source format and the format you want out.

HEIC to JPEGPNG to WEBPAVIF to JPEG
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calendar_month

Timestamp → Datetime

Convert Unix seconds into ISO 8601 strings, UTC formats, and timezone-friendly highlights.

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XML Sitemap Generator

Assemble sitemap.xml files with changefreq presets, priority controls, and instant XML preview.

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UUID Batch Generator

Generate UUIDs in bulk with checksum helpers to verify batch delivery.

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JSON Formatter & Validator

Pretty print, minify, and lint JSON payloads with server-side validation and copy-ready outputs.

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Hash Algorithm Explorer

Compare digests across hashing algorithms with grouped presets and checksum diff helpers.

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Base64 Encode & Decode

Convert between plain text and Base64 with URL-safe mode, padding helpers, and wrap presets.

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Code Beautifier / Minifier

Format or minify HTML, CSS, JavaScript, and SQL with server-side helpers and copy-ready outputs.

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CSS Purge Estimator

Spot unused selectors against your markup, build safelists, and copy purge-ready tokens.