Practical tools for everyday work. Convert, create, calculate, and keep things moving.
Featured tool
Validate JSON and format or minify it with configurable indentation.
Open toolReduce image dimensions and encode a smaller WebP or JPEG, with an exact before-and-after size comparison.
Open toolCombine pages from multiple PDFs in the order the files are selected.
Open toolCreate a standards-based QR code for text or a URL, entirely in your browser.
Open toolCount words, Unicode characters, lines, sentences and UTF-8 bytes.
Open toolPackage local files into a standard ZIP archive with selectable compression.
Open toolConvert length between clearly labeled units.
Open toolRecognize printed English, Simplified Chinese, Traditional Chinese or Japanese text using local OCR models.
Open toolCalculate SHA-256, SHA-384, SHA-512, SHA-1, MD5 or CRC32 over UTF-8 text.
Open toolConvert HEX or RGB to RGB, HSL, HSV and CMYK coordinates.
Open toolCalculate the signed number of days between calendar dates.
Open toolConvert letter case, title case, sentence case, camelCase or snake_case.
Open toolGuides & reviews
WebPA practical way to reduce image size while keeping text sharp, transparent edges clean and product details useful.
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JSONA conversion is successful only when the values, relationships and identifiers still mean the same thing after export.
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privacyUnderstand the difference between processing a file locally, encoding it, checking its fingerprint and encrypting its contents.
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ripgrepAn editorial assessment of where ripgrep fits, the defaults that affect its results, and a small workflow for adopting it.
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